Voltti
Free tool

Minutes to decimal
hours, and back.

Turn 7 hours 45 minutes into 7.75 hours for a timesheet, payroll or an invoice. Round to the nearest quarter hour, or turn decimal hours back into hours and minutes. No signup.

Convert

Type 45 for minutes, or 7:45 for hours and minutes.

Decimal places
Decimal hours- 
Quarter hour- 
Hours and minutes- 
Total minutes- 
Stop guessing

Bill the hours you really worked.

Converting minutes is easy. Knowing how many minutes you worked is the hard part. If you work on a computer, Voltti counts your real minutes in each app on Mac and Windows, with no timer to start or stop, and turns them into invoices your clients can verify. With Voltti Teams, a team lead or client sees who is working now and pays for real hours at each person's own rate.

Download for Mac Download for Windows

Free · macOS 13 or later · Windows 10 and 11

How it works

How to convert minutes to decimal hours.

  1. Divide the minutes by 60. 45 minutes is 45 ÷ 60 = 0.75 hours.
  2. Add the whole hours. 7 hours 45 minutes is 7 + 0.75 = 7.75 hours.
  3. Round for payroll if you need to. Two decimal places is the usual choice. Some employers round to the nearest quarter hour instead: 1 to 7 minutes round down and 8 to 14 minutes round up.
  4. To go back, multiply the decimal part by 60. 7.4 hours is 7 hours plus 0.4 × 60 = 24 minutes, so 7 hours 24 minutes.

Example: you worked 8 hours 50 minutes and bill $40 an hour. 50 ÷ 60 = 0.83, so you worked 8.83 hours and the invoice line is 8.83 × $40 = $353.20. Rounded to the nearest quarter hour, 8 hours 50 minutes becomes 8.75 hours.

A common mistake is to write 8 hours 50 minutes as 8.50. That is 8 and a half hours, which is 8 hours 30 minutes. To add up start and end times for a whole week first, use the work hours calculator, which also shows decimal hours.

Reference

Minutes to decimal hours chart.

Every minute from 1 to 60 as decimal hours, rounded to two places.

MinutesHours
1 min0.02
2 min0.03
3 min0.05
4 min0.07
5 min0.08
6 min0.10
7 min0.12
8 min0.13
9 min0.15
10 min0.17
11 min0.18
12 min0.20
13 min0.22
14 min0.23
15 min0.25
MinutesHours
16 min0.27
17 min0.28
18 min0.30
19 min0.32
20 min0.33
21 min0.35
22 min0.37
23 min0.38
24 min0.40
25 min0.42
26 min0.43
27 min0.45
28 min0.47
29 min0.48
30 min0.50
MinutesHours
31 min0.52
32 min0.53
33 min0.55
34 min0.57
35 min0.58
36 min0.60
37 min0.62
38 min0.63
39 min0.65
40 min0.67
41 min0.68
42 min0.70
43 min0.72
44 min0.73
45 min0.75
MinutesHours
46 min0.77
47 min0.78
48 min0.80
49 min0.82
50 min0.83
51 min0.85
52 min0.87
53 min0.88
54 min0.90
55 min0.92
56 min0.93
57 min0.95
58 min0.97
59 min0.98
60 min1.00
FAQ

Decimal hours, answered.

How do I convert minutes to decimal hours?

Divide the minutes by 60. 15 minutes is 0.25 hours, 30 minutes is 0.5 hours and 20 minutes is 0.33 hours. The chart above lists every minute from 1 to 60.

What is 7 hours 45 minutes in decimal?

7.75 hours. 45 minutes divided by 60 is 0.75, plus the 7 whole hours.

How do I convert decimal hours to hours and minutes?

Keep the whole number as hours, then multiply the decimal part by 60 for the minutes. 6.2 hours is 6 hours and 0.2 × 60 = 12 minutes. Switch to Decimal to time above to do it for you.

Why is 10 minutes 0.17 and not 0.10?

Decimal hours count parts of 60 minutes, not parts of 100. 10 minutes is one sixth of an hour, which is 0.1667, or 0.17 rounded to two places.

How does quarter hour rounding work?

Time is rounded to the nearest 15 minutes, often called the 7-minute rule. 1 to 7 minutes past a quarter hour round down and 8 to 14 minutes round up. 8 hours 7 minutes becomes 8.00 hours and 8 hours 8 minutes becomes 8.25 hours. Check your employer's own policy, since rounding rules can differ.

Is my data saved anywhere?

Your last entry stays in your browser so it's still there when you come back. Nothing is sent to a server.

Is there a way to track my hours automatically?

If you work on a computer, yes. Voltti for Mac and Voltti for Windows record every real minute in your apps and work websites, with no timer to start or stop. The free plan includes automatic tracking.