Decimal Hours Converter
Convert decimal time to hours and minutes, or vice versa. Handy for payroll and freelance timesheets
Quick Conversion Chart
Worked example
Methodology
- Choose Decimal to Time or Time to Decimal.
- Enter decimal hours such as 8.50, or hours and minutes (0–59).
- Read the converted value immediately, in the format 8h30m or as decimal hours.
- Use the quick chart (.25 = 15 min, .50 = 30 min, .75 = 45 min) to check your numbers, then Copy Result.
Decimal to Minutes:
On a timesheet, 7.75 hours means 7 hours and 45 minutes, because 0.75 × 60 = 45. The common mistake goes the other way: 8 hours 20 minutes is 8.33 hours (20/60 = 0.3333), not 8.20. The tool rounds the minutes to the nearest whole minute, so 0.37 hours is 22.2 minutes, shown as 22. If rounding reaches 60 minutes (8.992 hours gives 59.52, which rounds to 60), it carries over and shows 9h 0m instead of an invalid 8h 60m. Going from minutes to decimal shows two decimals, which can be off by up to 18 seconds when many entries are added, so keep more precision if your payroll adds up long lists.
The whole number is the hours. The decimal fraction is multiplied by 60 and rounded to the nearest whole minute. Example: 0.50 × 60 = 30 minutes. If rounding produces 60 minutes (8.992 h gives 59.52, which rounds to 60), the tool carries it into the next hour and shows 9 h 0 min instead of an invalid 8 h 60 min.
Converting timecard data means moving between base-60 (hours and minutes) and base-10 (decimal hours). One decimal hour is 60 minutes, so 0.01 h is 0.6 minutes (36 seconds) and one minute is about 0.0167 h. Worked examples: 7.75 h = 7 h 45 min, 0.37 h = 22.2 min (shown as 22), and 8 h 20 min = 8.33 h, not 8.20.
Frequently asked questions
“Time to Decimal” shows two decimals, and the tool rounds going back to whole minutes. Here is what that does to common values.
| Minutes | Decimal shown | Decimal × 60 | Back to minutes |
|---|---|---|---|
| 5 | 0.08 | 4.8 | 5 |
| 6 | 0.10 | 6.0 | 6 |
| 10 | 0.17 | 10.2 | 10 |
| 12 | 0.20 | 12.0 | 12 |
| 15 | 0.25 | 15.0 | 15 |
| 20 | 0.33 | 19.8 | 20 |
| 40 | 0.67 | 40.2 | 40 |
| 50 | 0.83 | 49.8 | 50 |
Round-tripping a single entry is safe: the error stays under 0.3 minutes, so the tool lands on the original minute every time. The trouble starts when you add rounded values. Log a 10-minute task 20 times and the sheet reads 20 × 0.17 = 3.40 h, which converts to 3 h 24 min, while the true total is 200 minutes, or 3 h 20 min. Add the minutes first, convert once at the end.
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Why do payroll systems use decimal hours? ▼
Payroll and accounting software works in base 10 (decimal) to calculate wages. You can’t multiply an hourly rate by “8 hours and 15 minutes” directly, but you can multiply it by 8.25.
Why doesn't .05 mean 5 minutes? ▼
Because time is measured in base-60, not base-100. A value of .05 represents 5% of an hour. Since an hour has 60 minutes, 5% of 60 is exactly 3 minutes.
How do I calculate wages with this format? ▼
Convert your total time to decimal with this tool, then multiply the result by the hourly rate (for example, 8.75 hours × $20/hr = $175).
What's the most common mistake with decimal time? ▼
Typing the raw minutes straight into the decimal field, for example entering 8.45 to mean “8 hours 45 minutes.” The correct value is 8.75, since 45 minutes is 45/60 = 0.75 of an hour. This single mix-up causes most payroll time errors.
Does rounding to two decimals change how much I get paid? ▼
It can, slightly. Each entry shown as 0.83 instead of 0.8333 loses about 12 seconds of pay, which is negligible for one shift but adds up over many entries, so keep full precision (or minutes) until the final total. Employers may also round clock times by a fixed rule, for example to the nearest 5 minutes, 6 minutes (a tenth of an hour) or 15 minutes, and the rules on whether and how this is allowed differ by country and employer policy. This tool only converts the numbers you enter; it does not apply any rounding policy, so check your contract or payroll rules for the official figure.