Hours Calculator

Quickly calculate hours between times. Simple, fast, no clutter.

Tool Icon Hours Calculator

Hours Calculator

Calculate duration between times or sum multiple time entries

Time Difference Mode

Enter start and end times to find the duration

Accurately handles overnight shifts
Calculation History:
No calculations yet
Time Measurement Tips:
Shift Work

Use Difference Mode for punch-in/out times.

Project Totals

Use Addition Mode to sum hours across days.

Overnight Shifts

Check 'Next Day' if working past midnight.

How to Use:
  1. Choose either Difference Mode or Addition Mode using the toggle button.
  2. Fill in the time values or durations in the input fields.
  3. Click "Calculate Hours" to generate the total breakdown.
  4. Review your result and save it to history if needed.

About This Tool

So, you’ve got a bunch of time entries—maybe from your work log, a side project, or just trying to figure out how long that "quick" task actually took. You open a spreadsheet, start adding up hours and minutes, and halfway through you realize you messed up the math. Again. That’s where this hours calculator comes in. It’s not fancy. No ads, no login, no “premium upgrade” popups. Just a simple tool that adds up your time entries and gives you the total in hours and minutes. Whether you're tracking billable hours, logging volunteer work, or just curious how much time you spent scrolling memes (we’ve all been there), this does one thing and does it well. I built it because I got tired of doing time math in my head and being off by 15 minutes every time. If it saves you five minutes of frustration, mission accomplished.

Key Features

  • Add as many time entries as you need—no limits, no tricks.
  • Enter time in hours and minutes (like 2 hours 45 minutes).
  • Automatically converts everything to a clean total (e.g., 5h 30m).
  • Works on your phone, tablet, or desktop—no app to download.
  • No data stored anywhere. Everything happens in your browser and vanishes when you close the tab.
  • Free. Always.

FAQ

Can I use this for payroll or invoicing?
Sure, but double-check the math. It’s accurate, but I’m not liable if your boss questions your time logs. Use it as a helper, not a legal document.

What if I enter something wrong?
Just delete the entry and re-enter it. There’s no undo button, but it’s easy to fix. If you mess up the whole thing, hit “Clear All” and start over. No drama.