Timesheets and payroll systems record time as decimal hours, because they multiply hours by a rate. The minutes need converting first, and the most common mistake is writing 7 h 45 min as 7.45.
Minutes to decimal hours
| Minutes | Decimal | Minutes | Decimal |
|---|---|---|---|
| 5 | 0.08 | 35 | 0.58 |
| 10 | 0.17 | 40 | 0.67 |
| 15 | 0.25 | 45 | 0.75 |
| 20 | 0.33 | 50 | 0.83 |
| 25 | 0.42 | 55 | 0.92 |
| 30 | 0.50 | 60 | 1.00 |
Example: Billing 7 hours 45 minutes at $40 an hour
7 + 45 ÷ 60 = 7.75 hours. 7.75 × $40 = $310.
Writing 7.45 instead would bill $298, $12 short.
Track billable time by client with the billable hours timesheet.
How to use this calculator
- Choose which way to convert.
- Enter hours and minutes, or decimal hours.
- Add an hourly rate if you want to see the pay.
FAQs
What is 15 minutes in decimal?
0.25 hours. 30 minutes is 0.5 and 45 minutes is 0.75.
What is 20 minutes in decimal?
0.33 hours (20 ÷ 60 = 0.333…). 40 minutes is 0.67.
Why not just write 7.45 for 7 h 45 min?
Because 7.45 hours is 7 hours 27 minutes. Payroll systems read the part after the point as a fraction of an hour, not minutes.
Results are estimates and aren't financial advice. For decisions about your own money, check with a qualified adviser. Spotted a mistake? Tell us.