Hours
Calculator.
Enter a start and end time — get the total hours and minutes between them. Add a break (in minutes) to deduct it from the total.
Notes
If the end time is earlier than the start time, the calculator assumes the shift crosses midnight and wraps to the next day.
Frequently asked questions
What does Hours Calculator do?
Add/subtract hours, minutes and seconds across a workday. The whole thing runs in your browser tab, so it is ready the moment the page finishes loading.
Is Hours Calculator free to use?
Yes. Hours Calculator is completely free on ToolMunch — no trial, no premium tier holding back the main feature, and no daily or hourly cap on how many times you can use it.
Do I need to create an account or sign up?
No. There is no account, no email address, and no login. Open Hours Calculator, do the job, and take the result — nothing is gated behind a signup form.
Are the numbers I enter sent to a server?
No. Hours Calculator runs entirely inside your browser tab, so what you type never leaves your own device. Nothing is uploaded, which means there is no copy of it on a server to worry about.
Does Hours Calculator work on Mac, Windows, and phones?
Yes. Hours Calculator runs in any modern web browser on Windows, macOS, Linux, Chromebook, Android, and iOS. There is nothing to download or install.
Can I use it as many times as I want?
Yes. There is no queue, no per-hour quota, and no counter that runs out — run Hours Calculator as often as the work needs.