Video File-Size Calculator
Estimate video size from duration, video bitrate and audio bitrate. Compare MB, GB, MiB and GiB with a worked example and clear limits.
Open the calculatorFree tools / no upload
A little planning.
A better starting point.
Useful calculations before the edit, the crop or the export. Every tool explains its inputs, shows a worked example and states what the answer cannot guarantee.
Use the calculator that matches the decision
Estimate storage before transferring a large batch of clips, compare aspect ratios before reframing an important subject, relate shutter angle to frame rate, or check how an interval becomes a final timelapse duration. The tools keep decimal and binary units distinct and show their assumptions beside the result.
They are deliberately narrow. They do not inspect a camera, recommend a flight, measure available storage or guarantee that a platform will accept a particular export. Use the estimate to plan, then verify the actual source and finished file in the application you intend to use.
Aspect-Ratio & Crop Calculator
Calculate the ideal crop when changing landscape, vertical or square video. See retained image area, source-pixel dimensions and framing limits.
Open the calculatorShutter Speed & ND Calculator
Calculate exposure time from frame rate and shutter angle, then compare a metered shutter speed to estimate neutral-density filter stops.
Open the calculatorTimelapse Duration Calculator
Plan timelapse frame count, playback length and speed-up from capture duration, interval and frame rate. Includes a transparent counting convention.
Open the calculatorYour footage stays out of the calculation.
These tools take numbers, not files. Calculations run in your browser and do not require a Stitch account. They do not measure your camera, identify a subject, stabilize footage or predict the quality of an export.
For the practical decisions behind the numbers, explore the video editing guides. For the product itself, read how Stitch works.