Online Tool Store
Decimal Time Converter
Convert between hours:minutes and decimal hours in both directions, live as you type — built for timesheets and payroll. Runs entirely in your browser.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Decimal hours
Hours : Minutes
How it works
- Enter hours and minutes on the left, or decimal hours on the right — both update independently.
- Hours:minutes converts to decimal by dividing minutes by 60 and adding to the hour count.
- Decimal hours converts back by splitting the whole and fractional parts, multiplying the fraction by 60.
The formula
Decimal hours = hours + (minutes ÷ 60). Hours:minutes = floor(decimal hours) hours, plus round((decimal hours − whole hours) × 60) minutes.
FAQ
Why does payroll use decimal hours?
Decimal hours (like 7.75) multiply cleanly against an hourly rate, while hours:minutes (7:45) doesn't — payroll and timesheet systems almost always store time in decimal form for this reason.
How is 45 minutes turned into .75?
45 minutes ÷ 60 minutes per hour = 0.75, so 7 hours 45 minutes becomes 7.75 decimal hours.
Does this round the minutes when converting back?
Yes — converting decimal hours back to hours:minutes rounds to the nearest whole minute.
Is my time data sent anywhere?
No — both conversions are simple division and modulo math that run entirely in your browser.
How we compare
| Feature | Online Tool Store | Payroll software built-in converter | Manual division |
|---|---|---|---|
| No account or software needed | ✓ | ✗ | ✓ |
| Converts both directions at once | ✓ | ✗ (usually one-way) | ✗ |
| Instant, live update | ✓ | ✓ | ✗ |
If you're filling out a timesheet and need decimal hours without doing the division yourself, this gives you both formats side by side.