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Minutes to decimal hours chart: 0–60 minutes

Find the decimal-hour value for a minute remainder, then add your whole hours. Keep the original minutes when adding several entries.

Reviewed Oct 28, 20262 minute read

How to use the chart

Read the row for the minutes after the colon. Add that fraction to the whole hours: 8:45 means 8 + 0.75 = 8.75 hours. A colon separates hours and minutes; a decimal point marks a fraction of an hour.

Decimal hours = whole hours + minutes ÷ 60

One hour is 60 minutes. The chart applies this unit conversion; it does not choose a payroll rounding policy.

Convert a complete hours-and-minutes duration

Every minute from 0 to 60

Both decimal columns are rounded to the nearest displayed place. “Exact” means the two-place value represents the minute count exactly. “Approximate” means the decimal repeats; keeping four places reduces display loss but does not make it exact. The 60-minute row is one whole hour.

Minute remainders converted to hours; two- and four-place displays.
Minutes	Hours: 2 places	Hours: 4 places	Two-place value
0	0.00	0.0000	Exact
1	0.02	0.0167	Approximate
2	0.03	0.0333	Approximate
3	0.05	0.0500	Exact
4	0.07	0.0667	Approximate
5	0.08	0.0833	Approximate
6	0.10	0.1000	Exact
7	0.12	0.1167	Approximate
8	0.13	0.1333	Approximate
9	0.15	0.1500	Exact
10	0.17	0.1667	Approximate
11	0.18	0.1833	Approximate
12	0.20	0.2000	Exact
13	0.22	0.2167	Approximate
14	0.23	0.2333	Approximate
15	0.25	0.2500	Exact
16	0.27	0.2667	Approximate
17	0.28	0.2833	Approximate
18	0.30	0.3000	Exact
19	0.32	0.3167	Approximate
20	0.33	0.3333	Approximate
21	0.35	0.3500	Exact
22	0.37	0.3667	Approximate
23	0.38	0.3833	Approximate
24	0.40	0.4000	Exact
25	0.42	0.4167	Approximate
26	0.43	0.4333	Approximate
27	0.45	0.4500	Exact
28	0.47	0.4667	Approximate
29	0.48	0.4833	Approximate
30	0.50	0.5000	Exact
31	0.52	0.5167	Approximate
32	0.53	0.5333	Approximate
33	0.55	0.5500	Exact
34	0.57	0.5667	Approximate
35	0.58	0.5833	Approximate
36	0.60	0.6000	Exact
37	0.62	0.6167	Approximate
38	0.63	0.6333	Approximate
39	0.65	0.6500	Exact
40	0.67	0.6667	Approximate
41	0.68	0.6833	Approximate
42	0.70	0.7000	Exact
43	0.72	0.7167	Approximate
44	0.73	0.7333	Approximate
45	0.75	0.7500	Exact
46	0.77	0.7667	Approximate
47	0.78	0.7833	Approximate
48	0.80	0.8000	Exact
49	0.82	0.8167	Approximate
50	0.83	0.8333	Approximate
51	0.85	0.8500	Exact
52	0.87	0.8667	Approximate
53	0.88	0.8833	Approximate
54	0.90	0.9000	Exact
55	0.92	0.9167	Approximate
56	0.93	0.9333	Approximate
57	0.95	0.9500	Exact
58	0.97	0.9667	Approximate
59	0.98	0.9833	Approximate
60	1.00	1.0000	Exact

Add minutes before shortening the result

A 17-minute entry is 0.283333… hours. Three entries contain 51 minutes, which is exactly 0.85 hours. Adding three shortened 0.28 displays gives 0.84 hours. That difference comes from discarding digits before the total was calculated.

Method	Working	Result
Original minutes first	(17 + 17 + 17) ÷ 60	0.85 hours
Two-place entries first	0.28 + 0.28 + 0.28	0.84 hours

MinuteFolio totals whole-minute records before formatting a decimal result. Optional rounding settings are separate and explicit. Retain the original dated shifts or a project JSON backup when a rounded report must be explained later.

Add several durations using their original values

Common values and mistaken separators

Written value	Meaning	Equivalent
7:30	7 hours 30 minutes	7.50 hours
7.30 hours	7 hours plus 0.30 of an hour	7:18
0.10 hours	One tenth of an hour	6 minutes
0.01 hours	One hundredth of an hour	0.6 minute = 36 seconds
37:45	A duration longer than one day	37.75 hours

A value from a report may already have been rounded. Converting it back cannot reconstruct omitted digits or recover the original shift times. The reverse converter rejects fractional-minute inputs by default instead of silently dropping them.

Check a decimal value in hours and minutes

Conversion, reporting and pay are separate choices

Use this reference for durations, timesheets and arithmetic checks. It does not determine which breaks are paid, whether overtime applies, or which rounding practice is permitted. Those decisions require the applicable instructions and rules. The same minute conversion works for a personal activity log without any wage calculation.

The table is calculated from the time-unit definitions in NIST SP 330. Its worked totals are original synthetic examples. No source endorses MinuteFolio or verifies a particular employer’s records.

Frequently asked questions

What is 45 minutes in decimal hours?

45 ÷ 60 = 0.75 hours exactly. Add the whole hours separately: 8 hours 45 minutes is 8.75 hours.

Is 20 minutes exactly 0.33 hours?

No. It is one third of an hour, or 0.333333… hours. 0.33 is its display rounded to two decimal places.

Does 0.01 hour mean one minute?

No. 0.01 × 60 = 0.6 minute, or 36 seconds. One whole minute is 1 ÷ 60 hour, approximately 0.0167 hour.

Sources and method

NIST SP 330, Section 4, Table 8Time-unit definitions only; not a payroll authority or product endorsement.
Original worked calculationSynthetic example data, explicit input rules and direct integer-minute arithmetic.

Keep going

Hours and minutes to decimal hours

Convert an hours-and-minutes duration into decimal hours using its exact minute total. See why 7:30 equals 7.50 hours.

Decimal hours to hours and minutes

Convert decimal hours into hours and minutes, with explicit minute precision and clear treatment of decimal fractions.

Add work hours

Add multiple work durations in hours and minutes or decimals, keep totals above 24 hours, and apply an optional personal threshold.

Round once or round every shift?

See why a rounding interval and its application level both matter, with a checked example and preserved original minutes.