Time to Decimal Calculator

Convert hours and minutes into decimal hours for payroll and timesheets — or convert decimal hours back into hours and minutes. Also calculate total hours worked from a clock-in and clock-out time.

Ad slot — above tool
Decimal hours
Enter hours and minutes
For example, 7.75 means 7 hours and 45 minutes
Hours & minutes
Enter a decimal value
Total worked
Enter clock in and clock out
Ad slot — below tool

How to convert time to decimal

Payroll systems and spreadsheets work with decimal hours, not the hours-and-minutes format on a clock. To convert, keep the hours as they are and divide the minutes by 60:

Decimal hours = Hours + (Minutes ÷ 60)
Example: 7 hours 45 minutes → 45 ÷ 60 = 0.75, so the decimal value is 7.75 hours. A 30-minute lunch is 30 ÷ 60 = 0.5 hours.

The reason you divide by 60 is that an hour has 60 minutes — each minute is one-sixtieth of an hour. This is why 15 minutes is 0.25 and 20 minutes is 0.333.

How to convert decimal back to time

To go the other way, keep the whole number as hours and multiply the decimal part by 60 to get minutes:

Minutes = Decimal part × 60
Example: 7.75 hours → the .75 becomes 0.75 × 60 = 45 minutes, giving 7 hours 45 minutes.
Ad slot — in article

Common minutes-to-decimal conversions

MinutesDecimalMinutesDecimal
50.083350.583
100.167400.667
150.250450.750
200.333500.833
250.417550.917
300.500601.000

Why payroll uses decimal hours

  • Easy multiplication — gross pay is simply decimal hours × hourly rate. You can't multiply "7:45" by a pay rate directly.
  • Spreadsheet friendly — Excel and payroll software add and total decimal numbers cleanly.
  • Fewer errors — mixing the 60-minute clock with base-10 math is a common source of timesheet mistakes.

Frequently asked questions

How do you convert time to decimal?
Divide the minutes by 60 and add the result to the hours. For 7 hours 45 minutes: 45 ÷ 60 = 0.75, so the decimal time is 7.75.
What is 45 minutes as a decimal?
45 minutes is 0.75 hours, because 45 ÷ 60 = 0.75.
What is 15 minutes in decimal form?
15 minutes is 0.25 hours (15 ÷ 60 = 0.25).
How do I convert decimal hours back to minutes?
Multiply the decimal portion by 60. In 6.5 hours, the 0.5 becomes 0.5 × 60 = 30 minutes, giving 6 hours 30 minutes.
How do I calculate hours worked from a timesheet?
Subtract the clock-in time from the clock-out time, then subtract any unpaid break. The "Hours worked" tab does this and shows the result in decimal hours.

Related calculators

This calculator is provided for general informational purposes. Always verify timesheet and payroll figures against your employer's official records.