Decimal Hours Conversion Chart

Published 24 September 2026 · Values rounded to two decimal places

Minutes to decimal hours chart

Find the number of minutes in the chart and use the decimal beside it. Add that decimal to the whole hours. For example, 7 hours 42 minutes becomes 7 + 0.70, or 7.70 hours.

Minutes from 0 to 59 converted to decimal hours rounded to two decimal places
Minutes	Decimal	Minutes	Decimal	Minutes	Decimal	Minutes	Decimal
0	0.00	15	0.25	30	0.50	45	0.75
1	0.02	16	0.27	31	0.52	46	0.77
2	0.03	17	0.28	32	0.53	47	0.78
3	0.05	18	0.30	33	0.55	48	0.80
4	0.07	19	0.32	34	0.57	49	0.82
5	0.08	20	0.33	35	0.58	50	0.83
6	0.10	21	0.35	36	0.60	51	0.85
7	0.12	22	0.37	37	0.62	52	0.87
8	0.13	23	0.38	38	0.63	53	0.88
9	0.15	24	0.40	39	0.65	54	0.90
10	0.17	25	0.42	40	0.67	55	0.92
11	0.18	26	0.43	41	0.68	56	0.93
12	0.20	27	0.45	42	0.70	57	0.95
13	0.22	28	0.47	43	0.72	58	0.97
14	0.23	29	0.48	44	0.73	59	0.98

How the conversion works

An hour has 60 minutes, while a decimal hour is divided into 100 parts. Divide the minutes by 60:

Decimal part of an hour = minutes ÷ 60

18 minutes ÷ 60 = 0.30 hours
42 minutes ÷ 60 = 0.70 hours
50 minutes ÷ 60 = 0.8333…, rounded to 0.83 hours

Why 30 minutes is 0.50, not 0.30

Clock time and decimal numbers use different bases. Thirty minutes is half of 60 minutes, so it equals 0.50 of an hour. Writing 7 hours 30 minutes as 7.30 decimal hours would describe only 7 hours 18 minutes, which understates the time by 12 minutes.

Common conversions

15 minutes = 0.25 hours
20 minutes = 0.33 hours
30 minutes = 0.50 hours
40 minutes = 0.67 hours
45 minutes = 0.75 hours
50 minutes = 0.83 hours

Converting decimal hours back to minutes

Take the digits after the decimal point and multiply them by 60. For example, 7.75 hours contains a decimal part of 0.75:

0.75 × 60 = 45 minutes

7.75 decimal hours = 7 hours 45 minutes

Rounding and payroll

The chart rounds values to two decimal places. A payroll or invoicing system may keep more precision, round each shift, round the final weekly total or use an approved time increment. Those methods can produce slightly different totals.

Do not assume a rounding method is permitted in your workplace. Use the method required by the applicable policy, agreement or law. The Time Calc calculator lets you choose no rounding or an interval of 5, 6 or 15 minutes, but the user is responsible for selecting an appropriate option.

Calculate a full time card

For several shifts, calculate each paid duration first, keep the values in minutes while adding them, and convert the final total to decimals. This reduces the small differences that can accumulate when every intermediate value is rounded.

See the full work-hours calculation guide, or use the calculator for automatic daily and weekly totals.