Rekort tools

Make the recording math disappear.

Four focused browser utilities for framing, sizing, timing, and checking a recording. No account is required.

Free video toolAspect ratio calculator for videoChoose a ratio and enter one dimension. The calculator returns an even-pixel width and height you can use for recording, editing, or export.Open tool →
Free video toolVideo file size calculatorEnter duration and bitrates to estimate the final file size. The result shows decimal MB/GB, storage per minute, and why an actual variable-bitrate export may differ.Open tool →
Free editing toolVideo speed and duration calculatorEnter a source duration and speed multiplier. The calculator returns the exact output duration and the amount of viewer time saved or added.Open tool →
Private browser checkWebcam and microphone testGrant temporary camera and microphone access to see a live preview, active device labels, and a real-time audio level. This page does not record or upload the stream.Open tool →