Decimal Hours Calculator — Convert Time Both Ways

Convert hours and minutes to time in decimals for payroll, or turn decimal hours back into hours and minutes. Both directions update instantly.

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Convert both ways

Decimal hours

Base 10

Hours and minutes → decimal

hoursminutes

Decimal hours → hours and minutes

decimal hours

The formula

How this calculator works

Decimal hours = hours + minutes ÷ 60

Minutes use base 60 while decimal hours use base 10. That is why 30 minutes is 0.50 hours and 45 minutes is 0.75 hours—not 0.30 or 0.45.

Real examples

Common workday calculations

Decimal minutes

15 minutes converted to base-10 hours

0.25 hours

Hours and minutes to decimal

7 hr 30 min

7.50 hours

Decimal to hours and minutes

7.75 decimal hours

7 hr 45 min

Conversion chart

Minutes to decimal hours chart

Use this 1–60 minute chart for a quick lookup. The calculator above also converts complete durations and decimal hours in either direction.

Minutes from 1 through 60 converted to decimal hours
Minutes	Decimal	Minutes	Decimal	Minutes	Decimal
1	0.02	21	0.35	41	0.68
2	0.03	22	0.37	42	0.70
3	0.05	23	0.38	43	0.72
4	0.07	24	0.40	44	0.73
5	0.08	25	0.42	45	0.75
6	0.10	26	0.43	46	0.77
7	0.12	27	0.45	47	0.78
8	0.13	28	0.47	48	0.80
9	0.15	29	0.48	49	0.82
10	0.17	30	0.50	50	0.83
11	0.18	31	0.52	51	0.85
12	0.20	32	0.53	52	0.87
13	0.22	33	0.55	53	0.88
14	0.23	34	0.57	54	0.90
15	0.25	35	0.58	55	0.92
16	0.27	36	0.60	56	0.93
17	0.28	37	0.62	57	0.95
18	0.30	38	0.63	58	0.97
19	0.32	39	0.65	59	0.98
20	0.33	40	0.67	60	1.00

Values are rounded to two decimal places. Follow the rounding method required by your payroll or timesheet system.

Good to know

Edge cases and common mistakes

7 hours 30 minutes is 7.50 decimal hours, not 7.30.
Time in decimals uses hundredths of an hour, while clock time uses 60 minutes per hour.
Results are displayed to two decimal places; payroll systems may use different rounding rules.
Convert each shift before adding only if your payroll process requires per-shift rounding.
This tool converts duration only and does not calculate pay or overtime.

Answers

Frequently asked questions

What is 7 hours 30 minutes in decimal hours?

It is 7.50 decimal hours because 30 minutes is one half of an hour.

What is 7.75 hours in hours and minutes?

It is 7 hours 45 minutes. Multiply the decimal portion, 0.75, by 60.

How do I convert decimal hours to hours and minutes?

Keep the whole number as hours, then multiply the decimal part by 60. For example, 8.45 decimal hours is 8 hours 27 minutes—not 8 hours 45 minutes.

Why is 15 minutes 0.25 hours?

Fifteen minutes is one quarter of 60 minutes, so it equals 0.25 of an hour.