Photography Calculators
Master the technical side of photography — work out depth of field and hyperfocal distance, compare lenses and sensors, plan exposure and time-lapses, and size your prints. Standard optics formulas with real sensor data, running entirely in your browser.
- Depth of Field Calculator Enter your sensor, focal length, aperture and subject distance to get the depth of field
- Field of View Calculator Enter your sensor and focal length to get the angle of view
- Crop Factor & Equivalent Focal Length Calculator Pick a sensor and enter a lens to get its crop factor and the full-frame-equivalent focal length and aperture.
- Exposure Value (EV) Calculator Enter an aperture, shutter speed and ISO to get the exposure value
- Hyperfocal Distance Calculator Enter your sensor, focal length and aperture to get the hyperfocal distance
- Time-Lapse Calculator Enter your shooting time, interval and playback frame rate to get the final clip length, number of photos and storage needed.
- Print Size & Resolution Calculator Enter your image's pixel dimensions and target DPI to get the maximum print size, megapixels and a quality rating.
- Sunny 16 Exposure Calculator Enter your ISO and aperture to get the right shutter speed for every light condition, using the Sunny 16 rule.
- Star Trail (500 Rule) Calculator Pick your sensor and focal length to get the longest shutter time that keeps stars as sharp points, not streaks.
- Flash Guide Number Calculator Enter a flash guide number and either the distance or aperture to get the correct exposure setting, adjusted for ISO.
- ND Filter Calculator Pick your metered shutter speed and the ND filter strength to get the new long-exposure shutter time.
- Diffraction Limit Calculator Choose your sensor and resolution to find the aperture where diffraction begins to limit sharpness.
Frequently asked questions
Are these photography calculators accurate?
Yes — they use standard optics formulas (hyperfocal distance, depth of field, angle of view, exposure value) and verified sensor dimensions and circle-of-confusion values. Sources are cited on each tool page.
What sensor sizes are supported?
Full frame, APS-C (Canon and Nikon/Sony), APS-H, Micro Four Thirds, 1-inch, medium format and smartphone sensors — each with the correct dimensions, crop factor and circle of confusion.
Do these change my exposure for crop factor?
No — crop factor affects field of view and depth of field, not exposure. An f/2.8 lens exposes as f/2.8 on any sensor. The "equivalent aperture" is only for comparing depth of field between formats.
Is my data uploaded?
No. Every tool runs entirely in your browser — nothing is sent to a server, and they work offline.