Practical guide 3 min read
How to count business days between two dates
Count working days with the right weekends, public holidays and days off, and avoid the classic off-by-one mistake.
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Utility
Decimal Hours Converter
Convert hours, minutes and seconds to decimal hours, or turn decimal hours back into clock time.
Your time, clearly
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Choose your options to begin.
Excluded holidays and custom dates
How this calculation works
Decimal hours = hours + minutes ÷ 60 + seconds ÷ 3,600. For example, 8 hours 30 minutes equals 8.5 hours, not 8.30. Clock output rounds to the nearest second.
Worked examples
- 7 hours 45 minutes is 7.75 hours, because 45 ÷ 60 = 0.75.
- 8.2 hours is 8:12:00, not 8 hours 20 minutes: 0.2 × 60 = 12 minutes.
- Common minutes as decimals: 6 = 0.1, 15 = 0.25, 20 = 0.333333, 30 = 0.5, 40 = 0.666667 and 45 = 0.75.
Questions
Why isn't 8.30 the same as 8 hours 30 minutes?
Decimal hours are fractions of an hour, so 8.30 is 8 hours plus 0.3 × 60 = 18 minutes. 8 hours 30 minutes is 8.5.
How do I turn decimal hours into pay?
Multiply them by the hourly rate: 7.75 hours at $20 an hour is $155. Entering 7.45 by mistake for 7 hours 45 minutes would pay $149.
How precise is it?
Decimal results show up to six decimal places and clock times are rounded to the nearest second, so 1 hour 20 minutes shows as 1.333333 hours.
Part of Date Calculator
Calculate date differences, business days, age, date offsets and work hours with custom workweeks, holiday calendars and CSV exports.
A little guidance