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- Decimal hours = hours + minutes ÷ 60 + seconds ÷ 3,600.
- 15 minutes is 0.25 hours, 30 minutes is 0.5 hours and 45 minutes is 0.75 hours.
- Payroll uses decimal hours so pay is simple to work out: decimal hours × hourly rate.
- You can also convert decimal hours back to hours and minutes.
How to use the time to decimal calculator
Pick a direction
Choose time to decimal, or decimal to time to turn a number like 7.75 back into hours and minutes.
Enter the time
Type hours, minutes and seconds. Leave the seconds at 0 if you do not need them.
Round if your payroll does
In the advanced options, round to the nearest 5, 6 or 15 minutes, and add an hourly rate to see the pay.
Read the result
You get decimal hours, decimal minutes, total seconds and a chart of minutes to decimal hours.
How to convert time to decimal
Clock time counts in sixty minutes, but decimal time counts in tenths and hundredths. To switch, divide the minutes by 60 and add them to the hours. This makes timesheets easy to add up and multiply by a pay rate.
Time to decimal hours
Decimal hours = hours + minutes ÷ 60 + seconds ÷ 3,600
Decimal minutes = hours × 60 + minutes + seconds ÷ 60
Example: 7 hours 45 minutes = 7 + 45 ÷ 60 = 7.75 hours.
Decimal hours back to time
Hours = the whole number
Minutes = the decimal part × 60
Example: 2.33 hours = 2 hours + 0.33 × 60 minutes = 2 hours 19.8 minutes.
Worked examples
7 hours 45 minutes
Add the minutes divided by 60 to the hours.
A quarter hour is always 0.25, so this result is easy to check.
8 hours 10 minutes 30 seconds
10 ÷ 60 = 0.1667 and 30 ÷ 3,600 = 0.0083.
Seconds add a small amount, which is why exact payroll uses decimals.
2.33 decimal hours to time
The decimal part 0.33 × 60 = 19.8 minutes.
Rounded to the nearest minute this is 2 hours 20 minutes.
Rounding a shift of 7 hours 50 minutes
Payroll systems often round to a set step.
Check which rounding rule your employer or payroll system uses.
Minutes to decimal chart
Minutes to decimal hours
Rounded to two decimals.
Add the decimal to the whole hours. For example 6 hours 20 minutes is 6.33 hours.
Where a time to decimal calculator helps
Payroll and timesheets
Turn hours and minutes into a figure you can multiply by a pay rate. Try the time card calculator for a full week.
Freelance billing
Bill clients by the tenth or quarter hour with exact decimal time.
Spreadsheets
Put decimal hours in a sheet so totals add up correctly.
Time tracking
Convert app or stopwatch time into decimals for reports.
Repeating decimals such as 0.3333 are rounded, so very small differences can appear when you add many days together. If you round each shift, the weekly total may differ slightly from rounding only at the end. Follow the rule your employer or payroll provider uses.
Time to decimal calculator FAQ
How do I convert minutes to decimal?
Divide the minutes by 60. For example, 30 minutes is 30 ÷ 60 = 0.5 hours and 20 minutes is 0.33 hours.
What is 15 minutes in decimal?
15 minutes is 0.25 hours. 30 minutes is 0.5 hours and 45 minutes is 0.75 hours.
How do I convert decimal hours to hours and minutes?
Keep the whole number as hours and multiply the decimal part by 60 to get minutes. For 4.4 hours, 0.4 × 60 = 24, so it is 4 hours 24 minutes.
How do I convert time to decimal in Excel or Google Sheets?
Multiply the time cell by 24 and format the result as a number. For example, a cell showing 7:45 times 24 gives 7.75.
Why do payroll systems use decimal time?
Decimals make pay simple. Decimal hours multiplied by an hourly rate gives the pay, with no need to work with sixty minute hours.
What is the 6 minute rule?
Six minutes is one tenth of an hour, so some billing systems round time to the nearest tenth. 7 hours 50 minutes becomes 7.8 hours under that rule.