Video tools that run in your browser

Every tool here runs on your own machine. The calculators answer timeline math — timecode, frame counts, frame rates and aspect ratios — and the converter turns a clip into a GIF or WebM without uploading it. No account, no watermark, no queue.

Calculators

Pure math, no upload and no waiting — results update as you type.

Video Frame Calculator

Convert timecode to frames and frames back to timecode at any frame rate, with a frame duration reference for 23.976 through 60 fps.
Timecode to framesFrames to timecode

Aspect Ratio Calculator

Scale width and height to 16:9, 9:16, 4:5, 2.39:1 or a custom ratio, with pixel dimensions at 1080p and 4K.

Media tools

Conversion that runs on your own machine. Your file is never sent to a server.

Video to GIF Converter

Trim, crop, caption and convert a short clip to GIF or WebM in the browser — the file never leaves your device.

Why browser tools instead of an app

Most "free" online video tools upload your footage, process it on a server and hand back a download — which means queueing, file size caps, and your material sitting on someone else's disk. Everything on VidoSick runs client side instead: the calculators are arithmetic, and the converter uses ffmpeg compiled to WebAssembly, so the encode happens on your CPU.

The trade-off is honest: local encoding is bound by your own hardware, so a long clip takes longer than it would on a server farm. In exchange there is nothing to sign up for and nothing to delete afterwards, and the calculators keep answering even if your connection drops mid-session.

Just after one number?

The quick answers section has a page per common question — how many frames ten seconds holds at 24 fps, what 9:16 is in pixels, what a 1920 × 1080 to 9:16 crop costs — each with the number at the top and the reference table underneath.

Questions about these tools

Are these video tools really free?

Yes. Every tool on this page is free to use with no account, no sign-up and no usage limit. There is no paid tier holding back features.

Do my files get uploaded to a server?

No. The calculators are pure math that runs in the page, and the video to GIF converter decodes and re-encodes your clip locally with ffmpeg compiled to WebAssembly. Your video never leaves your device.

Do the tools work on a phone or tablet?

The calculators work on any modern browser, including mobile. The video converter also runs on mobile but is limited by available memory, so long or high-resolution clips are better handled on a desktop browser.

Which frame rates and aspect ratios are supported?

The frame tools accept any frame rate you type, including 23.976, 29.97 and 59.94, and the reference tables cover the standard broadcast and film rates. The aspect ratio calculator ships presets from 1:1 to 2.39:1 and accepts custom ratios.