Time to Decimal Hours

Convert hours and minutes to decimal hours for timesheets and payroll (7:45 = 7.75), or decimal hours back to h:mm:ss. Minutes-to-decimal chart.

Hours and minutes → decimal

Hours

Minutes

Seconds

Decimal hours

7.75

= 465 minutes

Decimal → hours and minutes

Decimal hours

Hours : minutes : seconds

8:12:00

Minutes to decimal chart

Minutes	Decimal	Minutes	Decimal
5	0.083	35	0.583
10	0.167	40	0.667
15	0.250	45	0.750
20	0.333	50	0.833
25	0.417	55	0.917
30	0.500	60	1.000

How it works

Decimal hours = hours + minutes ÷ 60 + seconds ÷ 3600. So 7 hours 45 minutes is 7 + 45/60 = 7.75 hours.

Going back, the whole number is the hours; multiply the decimal part by 60 for minutes. 8.2 hours is 8 hours and 0.2 × 60 = 12 minutes.

Why payroll uses decimal hours

Pay is hours multiplied by a rate, and you cannot multiply 7:45 by $20 directly. 7.75 × $20 = $155. A common mistake is reading 7:30 as 7.30 hours — it is 7.5 hours, and the difference adds up over a pay period.

Frequently asked questions

What is 15 minutes in decimal hours?

0.25 hours. 30 minutes is 0.5, 45 minutes is 0.75, and 20 minutes is 0.333.

How do I convert 8.5 hours to hours and minutes?

8.5 hours is 8 hours 30 minutes: 0.5 × 60 = 30.

Is 7.30 hours the same as 7 hours 30 minutes?

No. 7 h 30 min is 7.5 decimal hours; 7.30 decimal hours is 7 h 18 min.