Decimal Hours Calculator: Time to Decimal and Back
Converts between clock-style time and the decimal hours used on payroll and timesheets.
Decimal hours
— hours
Share sends a link that reopens these numbers. Copy details pastes the full breakdown as a list.
Total minutes — minutes
Total seconds — seconds
Your decimal, as hours:minutes:seconds —
Minutes as decimal hours
The formula
decimal hours = hours + minutes ÷ 60 + seconds ÷ 3,600
To go back, the whole number is the hours, and the part after the point times 60 is the minutes.
What to watch out for
Decimal hours are not minutes: 7.30 hours is 7 hours 18 minutes, not 7 hours 30. For other units, including milliseconds, use the time converter.
Frequently Asked Questions
What is 7 hours 45 minutes in decimal?
7.75 hours.
What is 8.2 hours in hours and minutes?
8:12:00, which is 8 hours 12 minutes.
How do I multiply hours by a pay rate?
Convert to decimal first. 7 hours 30 minutes is 7.50 hours, so multiply the rate by 7.50, not 7.30.