Photo & Video Calculators

8 free calculators for aspect ratio, depth of field, video file size, and screen dimensions. No signup required.

8 free tools

Find the aspect ratio from any width and height, or calculate missing dimensions to fit a given ratio.

Calculate depth of field, near/far focus limits, and hyperfocal distance from focal length, aperture, and distance.

Estimate video file size in MB and GB from bitrate and duration. Includes common format presets.

Calculate screen width, height, and area from diagonal measurement and aspect ratio.

Calculate pixels per inch for any display from resolution and screen diagonal.

Calculate 35mm equivalent focal length and aperture for APS-C, Micro Four Thirds, and other sensor sizes.

Calculate total frames, video duration, and speed multiplier for any time-lapse shoot.

Calculate screen width, height, and diagonal from throw distance and throw ratio.

About Our Photo & Video Calculators