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ClockOut Tools

Hours to Decimal Calculator

Convert H:MM to decimal hours and back — 8h 30m is 8.50, not 8.30.

Convert time

Hours:Minutes → Decimal hours
Decimal hours → Hours:Minutes
Decimal hours
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Hours:Minutes
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Minute-to-decimal reference

MinutesDecimalMinutesDecimal
1 min 0.02 5 min 0.08
6 min 0.10 10 min 0.17
12 min 0.20 15 min 0.25
20 min 0.33 25 min 0.42
30 min 0.50 40 min 0.67
45 min 0.75 50 min 0.83
60 min 1.00

Related tools

Work Hours & Pay Calculator Hours plus estimated gross pay with overtime, shown step by step. Open → Clock-Out Calculator “What time can I leave?” — exact clock-out time from your shift target. Open →

Frequently asked questions

Why is 8 hours 30 minutes 8.50 and not 8.30?

Decimal hours divide minutes by 60, not by 100. 30 minutes is half an hour, so it becomes 0.50. Writing 8.30 would mean 8 hours and 18 minutes (0.30 × 60), which is a common payroll mistake.

How do I convert decimal hours back to hours and minutes?

Take the fractional part and multiply by 60. For 7.75, the 0.75 × 60 = 45 minutes, so 7.75 decimal hours equals 7 hours 45 minutes.

Does the converter round?

It rounds only for display to two decimals. Internally it keeps exact minutes. Enter 1:45 and you get exactly 1.75.

Is this useful for invoicing?

Yes. Freelancers and contractors usually bill in decimal hours. This tool and the Work Hours Calculator produce payroll-ready decimal values.