Photo & Video Calculators
Free calculators for photographers and videographers: aspect ratio, depth of field, video file size, screen PPI, and frame rate conversion. No signup.
9 free tools
Aspect Ratio Calculator
Find the aspect ratio from any width and height, or calculate missing dimensions to fit a given ratio.
Depth of Field Calculator
Calculate depth of field, near/far focus limits, and hyperfocal distance from focal length, aperture, and distance.
Video File Size Calculator
Estimate video file size in MB and GB from bitrate and duration. Includes common format presets.
Screen Size Calculator
Calculate screen width, height, and area from diagonal measurement and aspect ratio.
PPI Calculator
Calculate pixels per inch for any display from resolution and screen diagonal.
Crop Factor Calculator
Calculate 35mm equivalent focal length and aperture for APS-C, Micro Four Thirds, and other sensor sizes.
Time Lapse Calculator
Calculate total frames, video duration, and speed multiplier for any time-lapse shoot.
Projector Throw Distance Calculator
Calculate screen width, height, and diagonal from throw distance and throw ratio.
Image Resizer
Resize images to any dimension in your browser. Supports JPEG, PNG, and WebP output with quality control.
About Our Photo & Video Calculators
Every tool on this page is completely free, requires no signup, and runs entirely in your browser. All calculations update live as you type.