Every number a shoot needs.

Timecode maths that gets drop-frame right, timecode to frames and back, how much storage a shoot takes in ProRes, and the crop for any aspect ratio. Free, no account, worked out on your device.

Open the calculators Why trust the numbers

Timecode maths · 29.97 DF 00:59:59;28+00:00:00;04 01:00:00;02 Frames ;00 and ;01 don't exist at the top of a minute. The answer skips them.

Storage · ProRes 422 HQ · UHD · 23.976 634 GB Two hours, one camera. 705 Mb/s.

Crop · 2.39:1 from UHD 3840 × 1606

Four calculators, one page.

01Timecode mathsAdd or subtract timecodes or frame counts, at any rate from 23.976 to 60, drop-frame included.
02Timecode and framesA timecode as frames and seconds, a frame count as a timecode, and what those frames last at another rate.
03Storage for a shootEvery ProRes flavour from Proxy to 4444 XQ, HD to 8K, or any bit rate, times your cameras and hours.
04Crop to an aspect ratioThe biggest 2.39, 1.85, 4:5 or 9:16 frame inside your footage, in even pixels, and the bars to show it whole.

Timecode maths

Add or subtract two timecodes or frame counts. Type 01000000 for 01:00:00:00, or a plain number like 48 for frames.

Timecode A

Timecode B Frame rate

Timecode and frames

Turn a timecode into frames and seconds, or a frame count into a timecode. Change the frame rate to see the same frames at another rate.

Timecode or frames Frame rate

Same frames at

Storage for a shoot

How much space the footage takes, so you bring enough cards and drives. ProRes rates follow Apple's published targets; for anything else, enter the bit rate.

Codec Resolution Frame rate

Recording time (minutes) Cameras

Crop to an aspect ratio

The biggest frame of a given shape that fits inside your footage, and the bars you'd need to show it uncropped.

Source width Source height Target shape

Numbers you can hand to a producer.

Drop-frame, checked frame by frame. Every frame of two hours of 29.97 DF goes to timecode and back to the same frame. Timecodes that don't exist in drop-frame, like 00:01:00;00, are refused instead of guessed.
Apple's own rates. ProRes sizes come from Apple's published target bit rates, scaled by pixels and frame rate. UHD 422 HQ at 23.976 comes out at 705 Mb/s against Apple's 707.
Nothing leaves the page. There's no account and no server: what you type stays in your browser. Add Tools to your home screen and it works with no signal.

Made by the people behind Shutter and Slate.

Tools is the free corner of Ruytha Studios. The other two apps share one account.

Review Shutter Pin notes to the exact frame, box or draw on it, and hand your editor markers for Resolve. Footage never leaves your device. Open Shutter Pre-production and on set Slate Shot lists, storyboards, shoot days and call sheets, then a take log on set that's waiting beside the footage in Shutter. Open Slate