Decimal Hours Converter
Convert hours and minutes, an HH:MM string, or a clock-in to clock-out range into decimal hours for payroll. See exact decimal, two-decimal, tenth-hour, and quarter-hour rounding plus total minutes, instantly.
Decimal Hours Converter
Input Mode
Hours and Minutes
Time Worked (HH:MM)
Accepts H:MM, HH:MM, or HHH:MM. Separators :, ., h, or space all work.
Clock In / Clock Out
Rounding
Estimates only. Not tax or legal advice. Rounding rules vary by employer and state.
Minutes-to-decimal quick reference chart
| Min | Decimal | Min | Decimal | Min | Decimal |
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Skip the Conversion Step Entirely
ClockWage44 logs your shifts in real time and runs every paycheck in decimal hours behind the scenes, then resolves federal, state, FICA, overtime, and deductions into actual take-home pay, on-device.
How decimal hours work for payroll
Payroll software multiplies hours by an hourly rate. That math only works cleanly when the time figure is one number, not two. So 8 hours and 45 minutes has to become 8.75 before it can meet a rate. The conversion is one division: minutes divided by 60, added to the whole hours. 45 ÷ 60 = 0.75, so 8:45 is 8.75 decimal hours.
The trap to avoid is reading 8:45 as 8.45. Those look almost identical on paper, but they are not the same number. 8.45 hours is 8 hours and 27 minutes (0.45 × 60). Treat 8:45 as 8.45 and you've shorted the worker about 18 minutes per shift. At $20/hr that's $6 a shift, or roughly $1,500 over a year of full-time work. Decimal hours exist to prevent exactly this kind of bug.
Worked example: a tipped server clocks in at 4:15 PM and out at 11:45 PM, with a 30-minute unpaid break. Elapsed time is 7 hours 30 minutes minus 30 minutes, or 7 hours flat. In decimal that's 7.00. Multiply by an $18/hr base rate and gross wages for the shift are $126.00. Add tips on top of that and the math stays clean because every component is a real number.
The minutes-to-decimal conversion chart
The full 0 to 59 lookup table is collapsed inside the results panel above. Three landmarks cover most of what people actually search for: 15 minutes is 0.25, 30 minutes is 0.50, and 45 minutes is 0.75. The in-betweens follow the same logic (every minute is 1/60, or about 0.0167 of an hour). If you want the math without the lookup, the conversion is always minutes divided by 60.
Rounding rules and the 7-minute rule
Most US payroll systems round time before paying it. The Department of Labor allows three increments under the FLSA: nearest 5 minutes, nearest tenth of an hour (6 minutes), or nearest quarter hour (15 minutes). The catch is that rounding has to be neutral over time. It can not consistently round in the employer's favor. The DOL has won enforcement actions against employers whose rounding routinely shaved minutes off worker pay.
The "7-minute rule" falls out of quarter-hour rounding. Minutes 1 through 7 past a quarter mark round down. Minutes 8 through 14 round up. So 8:07 rounds to 8:00 (decimal 8.00), but 8:08 rounds to 8:15 (decimal 8.25). The rounding chip group above lets you preview all three FLSA-permitted increments side by side, plus a pure 2-decimal precision option for jobs that do not round at all.
From timesheet to take-home pay
Decimal hours is the first step. The full chain looks like this: convert your timesheet to decimal, multiply by your hourly rate to get gross pay, then subtract federal income tax, state income tax (where it applies), Social Security at 6.2%, Medicare at 1.45%, and any pre-tax deductions like health insurance or 401(k). Depending on your bracket and state, take-home usually lands between 65 and 80% of gross.
If you want the rest of the chain done for you, our overtime calculator handles the time-and-a-half premium once you cross 40 hours in a workweek, our hourly to salary calculator annualizes a rate, and our take-home pay calculator takes a gross figure to net. For the full workflow (multi-job, multi-state, on-device), download ClockWage44 and log your shifts there instead.
Frequently Asked Questions
Common questions about decimal hours converter
How do I convert hours and minutes to decimal?
Divide the minutes by 60 and add the result to the hours. Example: 8 hours 45 minutes becomes 45 ÷ 60 = 0.75, so 8.75 decimal hours. Once you have the decimal, multiply by your hourly rate to get gross pay, then use the take-home pay calculator for net.
How do I convert 7:30 to decimal hours?
7 hours and 30 minutes equals 7.5 decimal hours, because 30 ÷ 60 = 0.5.
What is 8:45 in decimal hours?
8:45 is 8.75 decimal hours (45 ÷ 60 = 0.75).
What does 1.25 hours mean?
1.25 hours is 1 hour and 15 minutes. The decimal .25 represents a quarter of an hour, which is 15 minutes (0.25 × 60 = 15).
Why do payroll systems use decimal hours instead of hours and minutes?
Payroll multiplies hours by an hourly rate. 8.75 × $20.00 = $175.00 works directly in decimal; 8:45 × $20.00 does not. Treating 8:45 as 8.45 is a common payroll bug that underpays employees by about 5 minutes of work. Our hourly to salary calculator uses the same decimal math at the annual scale.
How do you round time to the nearest quarter hour for payroll?
Use the 7-minute rule: minutes 1 through 7 past a quarter round down, minutes 8 through 14 round up. The FLSA permits rounding to the nearest 5 minutes, nearest tenth of an hour (6 minutes), or nearest quarter hour (15 minutes), as long as the rounding is neutral over time and does not consistently favor the employer.
Is decimal time the same as 24-hour (military) time?
No. 24-hour time is still hours and minutes (17:30 means 5:30 PM). Decimal time expresses a duration as a single number with a fractional part (17.5 means seventeen and a half hours).
How do I convert decimal hours back to hours and minutes?
Take the whole-number part as hours, then multiply the decimal part by 60 to get minutes. Example: 8.75 becomes 8 hours + (0.75 × 60) = 8 hours 45 minutes. To then calculate overtime on top, use the overtime calculator.