βŒ›
🍳

Cooking Time Math

Combine prep + cook times for recipes, or calculate when to start so dinner's ready at a target time.

No login required

Formats: HH:MM:SS (e.g. 01:30:45) or HH:MM (e.g. 02:15)

Result

02:15:30

2h 15m 30s Β· 8130 seconds total

135.50
minutes
2.258
hours
8,130
seconds

Cooking tips

🍳

For multi-step recipes (marinate 4h, cook 2h), sum total time to plan when to start.

πŸ’‘

For dinner timing: dinner at 19:00, food needs 2:30:00 prep β€” when to start? Use subtract mode.

🎯

For sous vide cooking with precise hold times, calculate exact end time from start.

How It Works

1
Enter
Enter your data into the tool above. Everything stays local to your browser.
2
Process
The tool processes your data instantly in your browser using JavaScript. No server, no waiting.
3
Download
Get your result instantly. Nothing is stored after you leave the page β€” complete privacy.

Why use ours?

βœ“Completely free β€” no hidden costs, ever
βœ“No account, email, or login required
βœ“Files never leave your device
βœ“No file size limits whatsoever
βœ“No watermarks on any output

Also check out…

Frequently Asked Questions