All tools
The complete directory. Every tool is free, requires no sign-up, and processes your data locally in your browser — nothing you type, upload or calculate is ever sent to a server.
📐 Unit Converters
🧮 Calculators
- ％ Percentage Calculator
- 📈 Percentage Change Calculator
- 🏦 EMI Calculator
- 🩺 BMI Calculator
- 🎂 Age Calculator
- 🧾 Tip Calculator
- 🏷️ Discount Calculator
- 📊 Compound Interest Calculator
- 🧮 Simple Interest Calculator
- 💼 Hourly to Salary Calculator
- 🍎 TDEE & Calorie Calculator
- 📏 Body Fat Percentage Calculator
- ⚖️ Ideal Weight Calculator
- 🥗 Macro Calculator
- 🤰 Pregnancy Due Date Calculator
- 🏠 Mortgage Calculator
- 🚗 Auto Loan Calculator
- 🏷️ Markup & Margin Calculator
- 🧾 Sales Tax Calculator
- ⛽ Fuel Cost Calculator
- 🎓 GPA Calculator
- 💯 Test Grade Calculator (EZ Grader)
- 🏷️ Unit Price Calculator (Price Per Unit)
- ⏰ Overtime Pay Calculator
- 📐 Square Footage Calculator
- 🏷️ Cost Per Square Foot Calculator
- 🧪 Dilution Ratio Calculator
- 📐 Aspect Ratio Calculator
- 😴 Sleep Calculator
- 🧾 VAT / GST Calculator
- 🎯 Final Grade Calculator
- 🍗 Protein Intake Calculator
- 🌸 Ovulation Calculator
- 🤰 Pregnancy Week Calculator
- 🔌 Electricity Cost Calculator
- 🗓️ Conception Date Calculator
- ⏳ Days Until Date Calculator
- 🩸 Blood Sugar Converter (mg/dL ↔ mmol/L)
- 🧪 HbA1c Converter (%, IFCC & eAG)
- 🫀 Cholesterol Converter (mg/dL ↔ mmol/L)
- 🧫 Creatinine Converter (mg/dL ↔ µmol/L)
- 💧 IV Drip Rate Calculator (gtt/min)
💍 Size Converters
✍️ Text Tools
- 🔤 Word Counter
- 🔡 Character Counter
- Aa Case Converter
- 🧹 Remove Duplicate Lines
- 🔃 Sort Lines
- 📄 Remove Line Breaks
- 🔍 Find and Replace
- 🔗 URL Slug Generator
- 🔁 Reverse Text
- 📧 Email & URL Extractor
- 👻 Invisible Character Detector & Remover
- 🕵️ Homoglyph / Lookalike Character Detector
- 🔀 Text Diff & Compare
- 📖 Readability Score Checker
- 🔡 Unicode Character Inspector
- 📊 Word Frequency Counter
- 🧹 Text Cleaner (Em-dash, Smart Quotes, Spaces)
- 🔤 Unicode Normalizer & Accent Remover
- ↔️ Delimiter Converter & Column Transposer
- 🔠 Fancy Text Decoder (Unicode → Plain Text)
- 🏷️ Strip HTML Tags (HTML → Plain Text)
- 📋 Line Tools (Number, Prefix, Suffix, Pad)
- ⚡ Fast-Reading Bold Converter
- 🔢 Number to Words Converter
- 🙃 Upside Down Text Generator
- 🎲 Random Line Picker
- 🔀 Compare Two Lists
- 🔊 Text to Speech
🎨 Color Tools
- 🎨 Color Converter
- #️⃣ HEX to RGB Converter
- 🔢 RGB to HEX Converter
- ♿ Color Contrast Checker
- 🌗 Shades & Tints Generator
- 🌈 CSS Gradient Generator
- 🧪 Color Mixer
- 🏷️ Brand Color Finder
- 🎛️ OKLCH Color Picker & Converter
- 🎯 HEX to OKLCH Converter
- 🔁 OKLCH to HEX Converter
- 📊 RGB to OKLCH Converter
- ♿ Accessible Color Generator (WCAG Fixer)
- 🔬 APCA Contrast Checker (WCAG 3)
- 🔲 Contrast Grid Generator
- 👁️ Color Blindness Simulator
- 🟢 Deuteranopia Simulator
- 🔴 Protanopia Simulator
- 🔵 Tritanopia Simulator
- 🎡 Color Harmony Generator
- 🎨 Complementary Color Finder
- 🔺 Triadic Color Scheme Generator
- 🌈 Analogous Color Scheme Generator
- 🖼️ Image Color Picker & Palette Extractor
- 🏷️ Color Name Finder
- 🪜 Tailwind Color Scale Generator (OKLCH)
- 🎨 HSV / HSB Color Converter
- 🎯 Delta-E Color Difference Calculator
- 🌡️ Color Temperature (Kelvin) to RGB
📊 Charts & Design
🔤 Fonts & Typography
- 🅰️ Fancy Font Generator
- 𝗕 Bold Text Generator
- 𝘐 Italic Text Generator
- 𝓒 Cursive Text Generator
- ꜱ Small Caps Generator
- Ⓑ Bubble Text Generator
- Ｗ Wide Text Generator (Vaporwave)
- S̶ Strikethrough Text Generator
- 📏 PX to REM Converter
- 🎚️ Type Scale Generator
- 📐 Line Height Calculator
- ˣ Superscript & Subscript Generator
- Z̸ Glitch Text Generator (Zalgo)
- ⬚ Invisible Text & Blank Name Generator
- ★ Symbols & Special Characters (Copy Paste)
- 🎨 Discord Colored Text Generator
- 🔡 CSS clamp() Fluid Typography Generator
- 🅰️ Emoji Letters Generator
- 🔁 Text Repeater
- ↄ Mirror & Backwards Text Generator
- ʖ Lenny Face & Kaomoji Generator
- 🌈 CSS Gradient Text Generator
- 📖 Line Length (Measure) Calculator
- 🅰 ASCII Art Text Generator (Big Text)
- 🔤 Font Metadata Inspector (TTF / OTF)
📡 Codes & Ciphers
- 📡 Morse Code Translator
- 🔤 NATO Phonetic Alphabet Converter
- 💻 Binary Code Translator
- 🏛️ Caesar Cipher Encoder / Decoder
- 🔁 ROT13 Encoder / Decoder
- 🗝️ Vigenère Cipher Encoder / Decoder
- 🔢 A1Z26 Cipher (Letter ↔ Number)
- 🔃 Atbash Cipher
- 🥓 Bacon's Cipher (Baconian)
- 🪜 Rail Fence Cipher
- 🔀 ROT47 Encoder / Decoder
- ⠿ Braille Translator
🚀 Productivity
- 🍅 Pomodoro Timer
- ⏱️ Countdown Timer & Stopwatch
- 💸 Meeting Cost Calculator
- 🎯 Eisenhower Matrix
- 🗂️ Kanban Board
- 🧠 Mind Map Maker
- 📊 Gantt Chart Maker
- ⚖️ Decision Matrix
- 📈 RICE Prioritization Calculator
- 🧭 SWOT Analysis Maker
- 🤔 Pros and Cons List
- 🔀 Flowchart Maker
- 🖊️ Online Whiteboard
- 🗓️ Time Blocking Planner
- 🎯 OKR / Goal Tracker
- 📋 Checklist & SOP Maker
- 🔄 Retrospective Board
- 👀 Eye Rest Timer (20-20-20)
- ✅ Habit Tracker
- 🏊 Swimlane Diagram Maker
- 🎡 Random Name Picker (Spin the Wheel)
- 📝 Online Notepad
- 📷 Webcam & Microphone Test
➗ Mathematics
- ➗ Fraction Calculator
- 🔁 Decimal ⇄ Fraction Converter
- 🧮 GCD & LCM Calculator
- 🔢 Prime Factorizer & Prime Checker
- ⚖️ Ratio Calculator
- 📈 Quadratic Equation Solver
- 📊 Statistics Calculator
- 🏛️ Roman Numeral Converter
- 🔬 Scientific Notation Converter
- 🎲 Permutations & Combinations Calculator
- 📝 Long Division Calculator (with Steps)
- √ Radical Simplifier & Surd Calculator
- 🔁 Modular Arithmetic Calculator
- 📈 Slope & Line Equation Calculator
- 📏 Distance & Midpoint Calculator
- 🔺 Binomial Expansion Calculator
- 🎯 Significant Figures Calculator
- 📐 Degrees ⇄ Radians Converter
- ⬜ Completing the Square Calculator
- 🧾 Synthetic & Polynomial Long Division
- 📶 Percentile Calculator
- ➿ Divisibility Rules Checker
- ⚖️ Weighted Average Calculator
- 🔺 Exponent Calculator
- ⭕ Circle Calculator (in Terms of π)
- 🔻 Triangle Area Calculator (Heron's Formula)
- 📐 Triangle Solver (Law of Sines & Cosines)
- 🔢 Matrix Calculator
- 🧮 Logarithm Calculator
- 🔢 Arithmetic & Geometric Sequence Calculator
- ➡️ Vector Calculator (2D & 3D)
🧬 Biology & Lab
- 🧬 DNA Reverse Complement & Translate
- 🧪 Dilution Calculator (C1V1=C2V2)
- 🟩 Punnett Square Calculator
- 📊 Hardy–Weinberg Equilibrium Calculator
- 🌡️ GC Content & Melting Temperature (Tm)
- ⚖️ DNA / RNA Molecular Weight & ng↔pmol
- ⏱️ Cell Doubling Time Calculator
- ⚗️ Molarity Calculator
- 🔬 OD600 to Cell Density Calculator
- 🧫 Protein Molecular Weight Calculator
- 🔬 Hemocytometer Cell Counting Calculator
- ⚗️ Michaelis–Menten Enzyme Kinetics Calculator
- 📈 qPCR Efficiency Calculator
- 📈 Population Growth Calculator
- ✂️ Restriction Enzyme Digest Calculator
- ⚡ Protein Isoelectric Point (pI) & Net Charge
📈 Statistics
- 🔔 Normal Distribution Calculator
- 🎯 Binomial Probability Calculator
- 📐 Confidence Interval Calculator
- 👥 Sample Size Calculator
- 🧮 P-Value Calculator
- 📉 Linear Regression & Correlation Calculator
- 📐 T-Test Calculator
- 📮 Poisson Distribution Calculator
- 🎲 Chi-Square Test Calculator
- 📊 Descriptive Statistics Calculator
- 📐 Z-Score Calculator
- 📐 Geometric & Harmonic Mean Calculator
- 🎲 Odds & Probability Calculator
- 📐 Z-Test Calculator
- 📏 Effect Size Calculator (Cohen's d)
- 🧪 A/B Test Significance Calculator
- 📊 One-Way ANOVA Calculator
- 🔢 Mann-Whitney U Test Calculator
- 📊 Kruskal-Wallis H Test Calculator
- 🔗 Wilcoxon Signed-Rank Test Calculator
⚗️ Chemistry & Lab
- 🧪 Interactive Periodic Table
- 🔟 Electron Configuration Calculator
- ⚖️ Element Comparison Tool
- 🧮 Average Atomic Mass Calculator
- 🔢 Oxidation Number Calculator
- ⚗️ Weak Acid & Base pH Calculator
- 🧂 Ksp & Molar Solubility Calculator
- ⚖️ Equilibrium Constant (Kc) & ICE Calculator
- 🔥 Hess's Law Enthalpy Calculator
- 🧪 Titration Calculator
- 💨 Raoult's Law Calculator
- ⚖️ Molar Mass Calculator
- 🧪 Molecular Weight Calculator
- 📊 Percent Composition Calculator
- ⚗️ Chemical Equation Balancer
- 🧮 Balancing Equations Calculator
- 🧉 Molarity Calculator
- 🎈 Ideal Gas Law Calculator (PV = nRT)
- 🔥 Specific Heat Calculator (q = mcΔT)
- 🧫 pH Calculator
- ⚗️ Molality Calculator
- ％ Mass Percent (w/w) Calculator
- 💧 Osmotic Pressure Calculator (π = iMRT)
- 🧯 Stoichiometry Calculator
- 🔢 Mole Calculator (Grams ↔ Moles ↔ Particles)
- 🔬 Empirical Formula Calculator
- 📈 Percent Yield Calculator
- 💧 Dilution Calculator (C₁V₁ = C₂V₂)
- 🪨 Density Calculator
- 🧪 Henderson–Hasselbalch Calculator
- 💡 Beer–Lambert Law Calculator
- 🌡️ Combined Gas Law Calculator
- ☢️ Half-Life Calculator (Radioactive Decay)
- ⚡ Gibbs Free Energy Calculator (ΔG = ΔH − TΔS)
- 🔋 Nernst Equation Calculator
- 📉 Arrhenius Equation Calculator
- ❄️ Freezing Point Depression Calculator
- 🌡️ Boiling Point Elevation Calculator
- 🧴 PPM Calculator (Parts Per Million)
- 🎯 Percent Error Calculator
🧲 Physics
- 🏁 Kinematic Equations (SUVAT) Calculator
- 🎯 Projectile Motion Calculator
- 🪂 Free Fall Calculator
- 🍎 Newton's Second Law Calculator (F = ma)
- 🎳 Momentum Calculator (p = mv)
- 🛑 Friction Calculator (f = μN)
- 💨 Kinetic Energy Calculator (KE = ½mv²)
- ⛰️ Potential Energy Calculator (PE = mgh)
- 🔧 Work Calculator (W = Fd·cosθ)
- ⚡ Power Calculator (P = W/t)
- 🪝 Hooke's Law Calculator (F = kx)
- 🎡 Centripetal Force Calculator
- 🌍 Gravitational Force Calculator (Newton)
- 〰️ Wavelength Calculator (v = fλ)
- 🔆 Photon Energy Calculator (E = hf)
- ☢️ Mass–Energy Calculator (E = mc²)
- 🔺 Snell's Law Calculator (Refraction)
- 🔌 Ohm's Law Calculator (V, I, R, P Wheel)
- 🧱 Pressure Calculator (P = F/A)
- 🛟 Buoyancy Calculator (Archimedes)
- 🚀 Escape Velocity Calculator
- 💧 Latent Heat Calculator (Q = mL)
- 🪂 Terminal Velocity Calculator
- 🧲 Magnetic Force Calculator
- 🕰️ Simple Pendulum Calculator
- 🪀 Spring Oscillation Calculator
- 🌊 Wave & Simple Harmonic Motion Calculator
- 🚨 Doppler Effect Calculator
- 🔎 Lens & Mirror Equation Calculator
- 🔗 Series & Parallel Resistor Calculator
- 🔋 Series & Parallel Capacitor Calculator
- 🔩 Torque Calculator (τ = rF·sinθ)
- 🛰️ Orbital Velocity & Period Calculator
- ♨️ Carnot Efficiency Calculator
- 📏 Thermal Expansion Calculator
- ⚛️ de Broglie Wavelength Calculator
- 📐 Average Velocity Calculator
- ⚡ Coulomb's Law Calculator
- 🎱 Collision Calculator (1D)
- 🚀 Special Relativity Calculator
- 🎸 Standing Wave & Harmonics Calculator
💵 Finance
- 🏠 Mortgage Refinance Calculator
- 📈 Compound Interest Calculator
- 🏔️ Debt Payoff Calculator (Snowball vs Avalanche)
- 🎯 Savings Goal Calculator
- 🏦 Loan Payoff Calculator
- 💳 Credit Card Payoff Calculator
- 📊 CAGR Calculator
- ⏳ Rule of 72 Calculator
- 💰 ROI Calculator
- ⚖️ Break-Even Calculator
- 🔁 APR to APY Calculator
- 💧 Liquidity Ratios Calculator
- ⚖️ Leverage & Solvency Ratios Calculator
- 🛡️ Coverage Ratios Calculator
- 📊 Profitability Ratios Calculator
- ⚙️ Efficiency Ratios Calculator
- 💹 Valuation Ratios Calculator
- 🔑 Home Affordability Calculator
- 🏖️ Retirement Calculator
- 🧮 50/30/20 Budget Calculator
- ⚖️ Debt-to-Income (DTI) Calculator
- 📉 Inflation Calculator
- 📈 NPV & IRR Calculator
🔌 Electronics & Circuits
- 🎨 Resistor Color Code Calculator
- 💡 LED Resistor Calculator
- 📉 Voltage Divider Calculator
- 🔋 Capacitor Code Calculator
- 🔌 Wire Gauge (AWG) Calculator
- 〰️ RC Time Constant & Filter Calculator
- ⏲️ 555 Timer Calculator
- 🔋 Battery Life Calculator
- 🔢 SMD Resistor Code Calculator
- 📻 LC Resonant Frequency Calculator
- ⚡ Ohm's Law Calculator
- 🔗 Series & Parallel Resistor Calculator
- 🔋 Series & Parallel Capacitor Calculator
- 〰️ Reactance Calculator (Xc & Xʟ)
- 🔊 Decibel (dB) Calculator
- 📉 Voltage Drop Calculator
🧳 Travel & Trips
- 🛫 Flight Distance Calculator
- ✈️ Flight Time Calculator
- 🔁 Layover & Connection Calculator
- 😴 Jet Lag Calculator
- 🧾 Tip Calculator (by Country)
- 🚗 Road Trip Time Calculator
- 💰 Travel Budget Calculator
- 🧳 Luggage Size & Volume Calculator
- 🕒 Time Zone Converter
- 🚗 Speed, Distance & Time Calculator
- 🧭 GPS Coordinate Converter (DD, DMS, UTM, MGRS, Geohash)
🖨️ 3D Printing
☀️ Solar & Energy
- ☀️ Solar Panel Output Calculator
- 🔋 Off-Grid Load Calculator
- 🔌 Solar Battery Bank Calculator
- ⚙️ Inverter Size Calculator
- 💡 Appliance Energy Cost Calculator
- 📈 Solar Payback Calculator
- 📉 DC Voltage Drop Calculator
- 🔄 Battery Charge Time Calculator
- 📐 Solar Panel Tilt Angle Calculator
- 🔌 Solar Array Wiring Calculator
🍺 Homebrewing
- 🍺 ABV Calculator
- 🌿 IBU Calculator (Tinseth)
- 🫧 Priming Sugar Calculator
- 🔬 Brix to Specific Gravity Converter
- 🌡️ Hydrometer Temperature Correction
- ♨️ Strike Water Temperature Calculator
- 💧 Gravity Dilution Calculator
- 🔭 Refractometer Final Gravity Calculator
- 🫧 Keg Carbonation Pressure Calculator
- 🎨 Beer Color Calculator (SRM & EBC)
- 🌾 Mash Efficiency Calculator
- 🧫 Yeast Pitching Rate Calculator
📸 Photography
- 🎞️ Depth of Field Calculator
- 📷 Field of View Calculator
- 🔲 Crop Factor & Equivalent Focal Length Calculator
- ☀️ Exposure Value (EV) Calculator
- 🏔️ Hyperfocal Distance Calculator
- ⏱️ Time-Lapse Calculator
- 🖨️ Print Size & Resolution Calculator
- 🔆 Sunny 16 Exposure Calculator
- 🌌 Star Trail (500 Rule) Calculator
- ⚡ Flash Guide Number Calculator
- 🌫️ ND Filter Calculator
- 🔬 Diffraction Limit Calculator
🔭 Astronomy & Space
- 🌙 Moon Phase Calculator
- 🌅 Sunrise & Sunset Calculator
- 🪐 Weight on Other Planets
- 🎂 Age on Other Planets Calculator
- 🌠 Light Travel Time Calculator
- 📐 Angular Size Calculator
- 🔭 Telescope Calculator
- ✨ Parallax Distance Calculator
- 🌅 Golden & Blue Hour Calculator
- ✨ Star Magnitude Calculator
- 🔴 Redshift Calculator
- 🪐 Kepler's Third Law Calculator
- 🕳️ Schwarzschild Radius Calculator
🌦️ Weather & Atmosphere
- 🥵 Heat Index Calculator
- 🥶 Wind Chill Calculator
- 💧 Dew Point Calculator
- 🌫️ Relative Humidity Calculator
- 🌡️ Feels Like Temperature Calculator
- 🌡️ Wet Bulb Temperature Calculator
- 💨 Beaufort Wind Scale Calculator
- ☁️ Cloud Base Calculator
- 💦 Absolute Humidity Calculator
- 🌱 VPD Calculator (Vapor Pressure Deficit)
- 🌧️ Rainwater Collection Calculator
- ✈️ Density Altitude Calculator
- 🌨️ Snow Load Calculator (Roof)
- 🥵 Humidex Calculator
- 🌡️ Sea-Level Pressure Calculator
🎵 Music & Audio
- 🎵 Note Frequency Calculator
- 🎛️ BPM to Delay Time Calculator
- 👆 Tap Tempo (BPM Counter)
- 🎼 Online Metronome
- 🎹 Musical Interval Calculator
- 🎸 Chord & Note Transposer
- 💾 Audio File Size Calculator
- 🥁 Bar & Time Signature Calculator
- 🎹 Chord & Scale Finder
- 🎚️ Audio Buffer Latency Calculator
- 🎼 Key Signature Finder
- 🎚️ Sample Rate & Nyquist Calculator
- 🏛️ Reverb Time (RT60) Calculator
🌱 Gardening & Plants
- 🌱 Plant Spacing Calculator
- 🌾 Seed & Row Spacing Calculator
- 🪴 Raised Bed Soil Calculator
- 🧪 Fertilizer Calculator (Nitrogen Rate)
- 💧 Garden Watering Calculator
- 📅 Planting Date Calculator (from Last Frost)
- 💡 Grow Light DLI Calculator
- ♻️ Compost Ratio Calculator (C:N)
- 🌡️ Growing Degree Days (GDD) Calculator
- ⛲ Pond Volume & Liner Calculator
- 💦 Spray & Pesticide Mix Calculator
🐾 Pets & Animals
- 🐕 Dog Age Calculator (Dog Years to Human Years)
- 🐈 Cat Age Calculator (Cat Years to Human Years)
- 🦴 Dog Food Calculator (How Much to Feed)
- 🐟 Cat Food Calculator (How Much to Feed)
- 🐾 Pet Gestation Calculator (Due Date)
- 🐠 Aquarium Volume Calculator
- 💧 Pet Water Intake Calculator
- 📦 Dog Crate Size Calculator
- 🍫 Dog Chocolate Toxicity Calculator
- 🐠 Aquarium Stocking Calculator
- 🌡️ Aquarium Heater Size Calculator
- 🐶 Puppy Weight Calculator
🏃 Fitness & Exercise
- 🏃 Running Pace Calculator
- 🔁 Pace Converter (min/km, min/mile, mph, km/h)
- 🏋️ One-Rep Max (1RM) Calculator
- ❤️ Heart Rate Zone Calculator
- 🏅 Race Time Predictor
- 🫁 VO2 Max Calculator (Cooper Test)
- 🔥 Calories Burned Calculator
- 👣 Steps to Distance Calculator
- 🏊 Swimming Pace Calculator
- 📉 Calorie Deficit Calculator
- 📏 Navy Body Fat Calculator
🚗 Automotive
- 🛞 Tire Size Calculator
- 📐 Tire Size Comparison & Speedometer Error
- ⚙️ Gear Ratio & RPM Calculator
- 🔧 Engine Displacement Calculator
- 🎯 Compression Ratio Calculator
- 🐎 Horsepower & Torque Calculator
- ⛽ MPG & L/100km Converter
- 🛠️ Wheel Offset & Backspacing Calculator
- 🔌 EV Charging Time Calculator
- 🏎️ Power-to-Weight Calculator
- 🛑 Stopping Distance Calculator
- 🏁 1/4-Mile ET & Trap Speed Calc
- ⛽ Fuel Cost Calculator
- 🛣️ Fuel Range Calculator
- 🌡️ Tire Pressure Temperature Calculator
- ⛽ Two-Stroke Fuel Mix Calculator
- 🚚 Trailer Tongue Weight Calculator
🍳 Cooking & Kitchen
- ⚖️ Grams to Cups Converter
- 🥄 Cooking Measurement Converter
- 🧈 Butter Converter (Sticks, Cups, Grams)
- 🌡️ Oven Temperature Converter (°F, °C, Gas Mark)
- 🍽️ Recipe Scaler & Multiplier
- 🍰 Baking Pan Size Converter
- 🍞 Baker's Percentage Calculator
- 🫧 Yeast Converter (Active Dry, Instant, Fresh)
- ☕ Coffee-to-Water Ratio Calculator
- 🍖 Meat Cooking Temperature Guide
- 🧂 Brine Calculator (Salt Ratio)
- 🍟 Air Fryer Conversion Calculator
- 🍗 Roast Cooking Time Calculator
- 🍲 Slow Cooker Conversion Calculator
- 🍚 Rice to Water Ratio Calculator
- 🦃 Turkey Cooking Time Calculator
- 🍞 Sourdough Starter Calculator
- 🎉 Party Food & Drink Calculator
🛠️ Home & DIY
- 🎨 Paint Calculator
- 🔲 Tile & Flooring Calculator
- 🧱 Concrete Calculator
- 🌱 Mulch & Soil Calculator
- 🧻 Wallpaper Calculator
- ♿ Wheelchair Ramp Calculator
- 🪵 Firewood Cord Calculator
- 🪨 Gravel & Aggregate Calculator
- 🧱 Drywall & Plasterboard Calculator
- 🏠 Roofing Calculator
- 🌿 Sod & Grass Seed Calculator
- 🪵 Fence Calculator
- 🪜 Deck Board Calculator
- 📏 Board Foot Calculator
- 🪜 Stair Calculator (Rise & Run)
- 🧱 Wall Stud Calculator
- ❄️ BTU Calculator (Air Conditioner Sizing)
- 📐 Roof Pitch Calculator
- 🏗️ Rebar Calculator
- 🧱 Brick & Block Calculator
- 🚜 Excavation Calculator
- 📏 Trim & Molding Calculator
- 🧱 Retaining Wall Calculator
- 🧱 Paver & Patio Calculator
- 🧱 Grout Calculator
- 🪵 Flooring Calculator (Boxes Needed)
- 🏊 Pool Volume Calculator
🌐 Network & IT
🔄 File & Data Converters
- { } JSON Formatter & Validator
- 📊 CSV to JSON Converter
- 📋 JSON to CSV Converter
- 📝 JSON to YAML Converter
- 🧾 YAML to JSON Converter
- 🗂️ XML to JSON Converter
- 🏷️ JSON to XML Converter
- 📑 CSV to Markdown Table
- 📰 Markdown to HTML Converter
- 🧾 E-Invoice Viewer (XRechnung / ZUGFeRD)
- 🇫🇷 Factur-X Viewer (French E-Invoice)
- 🇵🇱 KSeF Invoice Viewer (Poland FA(3))
- 🧐 KSeF Invoice Pre-Checker (FA(3))
- 🇧🇪 Peppol BIS Invoice Viewer (Belgium)
- 📊 Excel to CSV Converter
- 🧾 Excel to JSON Converter
- 📈 CSV to Excel Converter
- 🧩 TOML to JSON Converter
- 🧷 JSON to TOML Converter
- 📐 XML Formatter & Minifier
- 📝 HTML to Markdown Converter
- 📄 JSONL to JSON Converter
- 📃 JSON to JSONL Converter
- 🗂️ INI to JSON Converter
- 🗄️ JSON to INI Converter
- 🔑 .env to JSON Converter
- 🗝️ JSON to .env Converter
- ☕ Java .properties to JSON Converter
- 📋 JSON to Java .properties Converter
- 📥 File to Base64 Encoder
- 📤 Base64 to File Decoder
- 🥾 GPX Analyzer (Elevation & Pace)
- 🗺️ GPX to GeoJSON Converter
- 🧭 GeoJSON to GPX Converter
- 👤 vCard (VCF) to CSV Converter
- 📇 CSV to vCard (VCF) Converter
- 🧹 SVG Optimizer & Minifier
- 🗜️ ZIP Extractor (Open ZIP Online)
- 📦 Create ZIP (Zip Files Online)
- 📖 EPUB Metadata Viewer
- 🧲 Torrent File Viewer (Info-Hash)
- 📍 Google Polyline Encoder / Decoder
- 🎬 MP4 / MOV Box (Atom) Viewer
- 🗺️ WKT to GeoJSON Converter
- 🧭 GeoJSON to WKT Converter
👨💻 Developer Tools
- 🅱️ Base64 Encoder / Decoder
- 🔗 URL Encoder / Decoder
- 📜 HTML Entities Encoder / Decoder
- #️⃣ SHA Hash Generator
- 🎫 JWT Decoder
- 🧩 Regex Tester
- 🔟 Number Base Converter
- 🪙 LLM Token Counter & Cost Calculator
- ⟠ Ethereum Unit Converter (Wei, Gwei, Ether)
- #️⃣ Keccak-256 / SHA-3 Hash & Function Selector
- ✅ EIP-55 Ethereum Address Checksum
- 🔗 Query String Parser
- 🚦 HTTP Status Code Lookup
- 🔧 JSON String Escaper / Unescaper
- 🔤 Unicode Escape Converter
- 🔡 Text to Hex Converter
- 🟦 JSON to TypeScript
- 🌐 HAR File Viewer
- 🗃️ SQL Formatter
- 3️⃣ Base32 Encoder / Decoder
- 🅰️ Ascii85 Encoder / Decoder
- 🅱️ Base58 Encoder / Decoder
- 6️⃣ Base62 Encoder / Decoder
- 🏦 IBAN Validator & Formatter
- 📚 ISBN-10 ↔ ISBN-13 Converter & Validator
- 🌍 Punycode / IDN Converter
- 🔀 JSON Diff / Compare
- 🔏 HMAC Generator
- 🎟️ JWT Encoder / Signer
- ⏱️ ISO 8601 Duration Converter
- 🎯 UTM Campaign URL Builder
- 🧬 JSON Schema Generator
- 🐹 JSON to Go Struct Converter
- 🔁 curl to JavaScript fetch Converter
- 🐍 JSON to Python Dataclass Converter
- 🦀 JSON to Rust Struct Converter
- 💠 JSON to C# Class Converter
- 🗃️ JSON to SQL INSERT Converter
- 📇 CSV to SQL INSERT Converter
- 📋 SQL IN Clause Generator
- 📊 Barcode Check Digit Validator (EAN, UPC, ISBN, ISSN)
- 📱 IMEI & Luhn Validator
- ❄️ Snowflake ID Decoder
- 🔢 CRC-32 & Adler-32 Checksum Calculator
- 🧬 Protobuf Decoder (decode_raw)
- 📦 CBOR Decoder & Diagnostic Viewer
- 🔬 IEEE 754 Floating-Point Converter
- 📧 Email Header Analyzer
- 🔑 JWK Thumbprint Calculator (RFC 7638)
✨ Generators
- 🔑 Password Generator
- 🆔 UUID Generator
- 📱 QR Code Generator
- 🎲 Random Number Generator
- 📃 Lorem Ipsum Generator
- 📶 WiFi QR Code Generator
- 👤 vCard QR Code Generator
- ✉️ Email, SMS & Location QR Code Generator
- 🏷️ Barcode Generator (EAN, UPC, Code 128, Code 39)
- 🔢 ULID Generator
- 🔑 NanoID Generator
- 🎲 Passphrase Generator (Diceware)
- 🎲 Dice Roller & Coin Flip
- 🔗 MAC Address Generator
- 💳 Test Credit Card Number Generator
- 📅 ICS Calendar Event Generator (.ics)
- 📷 QR Code Scanner
📅 Date & Time Tools
- ⏱️ Unix Timestamp Converter
- 🎂 Age Calculator
- 📅 Days Between Dates Calculator
- ➕ Date Add / Subtract Calculator
- 🗓️ Week Number Calculator
- 🌍 Time Zone Converter
- 📆 Business Days Calculator
- ⏱️ Time Duration Calculator
- 📆 Day of the Year Calculator
- 🗓️ Day of the Week Calculator
- 📅 Add Business Days Calculator
- 🌍 Time-zone pairs (IST/EST/PST/GMT…)
🗓️ Calendars
🔐 Privacy & Security
🖼️ Image Tools
- 📲 HEIC to JPG Converter
- 🗜️ Image Compressor
- 🔁 Image Format Converter
- 📏 Image Resizer
- 🖇️ Image to Base64 Converter
- 🔄 Rotate & Flip Image
- ⭕ Circle Crop Image
- 🔲 Image Splitter (Grid Maker)
- 🔍 Image Metadata Viewer (EXIF)
- 🖊️ Image & Screenshot Annotator
- ✂️ Crop Image
- 🔃 Flip Image (Mirror)
- 🎯 Resize Image to KB (Target File Size)
- ©️ Add Watermark to Image
- 🌐 Favicon Generator
- 🖼️ SVG to PNG Converter
- 🧩 Base64 to Image
- 🧷 Combine Images
- 🖨️ Change Image DPI (300 DPI Converter)
- 🧩 PNG Chunk Viewer & CRC Checker
🪪 Photo Size Maker
- 🇺🇸 US Passport Photo
- 🇺🇸 US Visa / DV Lottery Photo
- 🇬🇧 UK Passport Photo
- 🇨🇳 China Visa Photo
- 🇪🇺 Schengen Visa Photo
- 🇩🇪 Germany Biometric Photo
- 🇫🇷 France Passport / ID Photo
- 🇮🇹 Italy Passport / ID Photo
- 🇪🇸 Spain Passport / DNI Photo
- 🇳🇱 Netherlands Passport / ID Photo
- 🇵🇱 Poland Passport / ID Photo
- 🇮🇪 Ireland Passport Photo
- 🇦🇹 Austria Passport / ID Photo
- 🇬🇷 Greece Passport Photo
- 🇨🇭 Switzerland Passport / ID Photo
- 🇨🇦 Canada Passport Photo
- 🇮🇳 India Passport Photo
- 🇯🇵 Japan Passport Photo
- 🇯🇵 Japan Visa Photo
- 🇦🇺 Australia Passport Photo
- 🇳🇿 New Zealand Passport Photo
- 🇸🇬 Singapore Passport / IC Photo
- 🇲🇾 Malaysia Passport Photo
- 🇵🇰 Pakistan Passport Photo
- 🇹🇭 Thailand Visa Photo
- 🇻🇳 Vietnam Passport / Visa Photo
- 🇮🇩 Indonesia Passport Photo
- 🇵🇭 Philippines Passport Photo
- 🇦🇪 UAE Visa / Emirates ID Photo
- 🇸🇦 Saudi Arabia Visa Photo
- 🇹🇷 Turkey Passport / Visa Photo
- 🇲🇽 Mexico Passport Photo
- 🇧🇷 Brazil Visa Photo
- 🇿🇦 South Africa Passport / ID Photo
- 🇰🇪 Kenya Passport Photo
- 🇹🇼 Taiwan Passport Photo
- 🇭🇰 Hong Kong Passport Photo
- 🇰🇿 Kazakhstan Passport / ID Photo
- 🇫🇯 Fiji Passport Photo
- 🇨🇿 Czech Republic Passport / ID Photo
- 🇪🇪 Estonia Passport / ID Photo
- 🇱🇹 Lithuania Passport / ID Photo
- 🇫🇮 Finland Passport Photo
- 🇭🇷 Croatia Passport / ID Photo
- 🇹🇿 Tanzania Visa Photo
- 🇯🇲 Jamaica Passport Photo
- 🇬🇾 Guyana Passport Photo
- 🇨🇺 Cuba Passport Photo
- 🇵🇦 Panama Passport Photo
- 🇩🇴 Dominican Republic Passport Photo
- 🇲🇹 Malta Passport Photo
- 🇦🇲 Armenia Passport / ID Photo
- 🇲🇻 Maldives Passport Photo
- 🇰🇷 South Korea Passport Photo
- 🇮🇱 Israel Passport Photo
- 🇧🇪 Belgium Passport / eID Photo
- 🇳🇬 Nigeria Passport Photo
📄 PDF Tools
- 🧷 Merge PDF Files
- ✂️ Split PDF / Extract Pages
- 🖼️ Images to PDF Converter
- 🔄 Rotate PDF Pages
- 🔓 Unlock PDF (Remove Password)
- 🔐 Password Protect PDF
- ♿ PDF Accessibility Checker
- 🕵️ PDF Redaction Checker
- ⬛ Redact PDF (Flatten & Burn In)
- 🖼️ PDF to JPG
- 💧 Add Watermark to PDF
- 🔢 Add Page Numbers to PDF
- 📝 PDF to Text
- 🗂️ Organize PDF Pages
- ✍️ Sign PDF
- 🗞️ PDF N-Up (Multiple Pages Per Sheet)
- 🗜️ Compress PDF
🎬 Audio & Video
Related resources
LazyTools' Gantt chart maker is great for quickly sketching a plan in the browser. If you'd rather build your schedule in a spreadsheet, these free downloadable templates are a handy companion.
📊 Free Gantt Chart Excel Templates — ExcelGuru
Ready-to-use, downloadable Gantt chart templates for Excel and Google Sheets — project timelines, task tracking and milestones you can edit offline in your spreadsheet.