💦 Spray & Pesticide Mix Calculator
Enter your sprayer volume and the product's label rate to get how much concentrate to add.
Product to add
10 fl oz
into 5 gallons of water
The amount of product is simply the tank volume × the label rate: a 2 oz-per-gallon rate in a 5-gallon sprayer needs 10 fl oz. Always follow the product label — rates and safety directions there take precedence — and never exceed the maximum rate. Measure concentrates carefully and wear the protective equipment the label specifies. 🔒 In your browser.
How the spray & pesticide mix calculator works
The amount of product is the tank volume times the label's application rate: for a rate given per gallon (or per litre) of water, product = tank volume × rate. A 2 oz-per-gallon rate in a 5-gallon sprayer needs 10 fluid ounces of concentrate. Choose US (oz per gallon) or metric (mL per litre) units.
The product label is the legal authority — always follow its exact rate, timing and safety directions, and never exceed the maximum rate (more is not better and can harm plants or violate the label). This tool handles the simple dilution arithmetic; it doesn't know your specific product. Measure concentrates precisely, wear the specified protective equipment, and mix only what you'll use.
Frequently asked questions
How much pesticide do I mix per gallon?
Multiply the tank size by the label rate: if the label says 2 oz per gallon and your sprayer holds 5 gallons, add 2 × 5 = 10 oz. Always use the rate printed on your product's label.
How do you calculate a spray mix ratio?
Product amount = water volume × rate per unit volume. The tool multiplies your tank size by the per-gallon (or per-litre) rate. For a ratio like 1:100, that's about 1.3 oz per gallon (128 oz ÷ 100).
Is more product more effective?
No — exceeding the label rate can damage plants, leave illegal residues and waste money, without improving control. The labelled rate is tested for effectiveness and safety; stick to it.
What units does the label use?
Often ounces per gallon (US) or millilitres per litre (metric); some list a ratio or an amount per area. This tool covers the per-volume rates — switch between US and metric units to match your label.
How much spray mix should I make?
Only what you'll apply in one session — mixed pesticide degrades and storing it is often prohibited. Estimate the area and your sprayer's coverage, then mix that many tank-loads at the label rate.