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Minutes to decimal hours converter

Payroll and invoicing use decimal hours, time cards use hours and minutes. Convert in either direction, or print the conversion chart and keep it next to the timesheets.

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Hours and minutes to decimal

Result
7.75

Decimal to hours and minutes

Result
7:45

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How to convert minutes to decimal hours

  1. Split hours and minutes

    Take 7:45 apart into 7 hours and 45 minutes.

  2. Divide the minutes by 60

    45 ÷ 60 = 0.75.

  3. Add the hours

    7 + 0.75 = 7.75 decimal hours.

Minutes to decimal conversion chart

Decimal hours rounded to two places. 1 minute = 1/60 hour ≈ 0.0167.

MinutesDecimal hours
10.02
20.03
30.05
40.07
50.08
60.10
70.12
80.13
90.15
100.17
110.18
120.20
130.22
140.23
150.25
MinutesDecimal hours
160.27
170.28
180.30
190.32
200.33
210.35
220.37
230.38
240.40
250.42
260.43
270.45
280.47
290.48
300.50
MinutesDecimal hours
310.52
320.53
330.55
340.57
350.58
360.60
370.62
380.63
390.65
400.67
410.68
420.70
430.72
440.73
450.75
MinutesDecimal hours
460.77
470.78
480.80
490.82
500.83
510.85
520.87
530.88
540.90
550.92
560.93
570.95
580.97
590.98
601.00

Why decimal hours matter

An hour has 60 minutes, not 100. That makes 8:30 equal to 8.5 hours, while 8.30 decimal hours is 8 hours and 18 minutes. Entering clock minutes as decimals is a classic payroll error: 8:30 entered as 8.30 underpays 12 minutes on a single day.

Payroll systems, spreadsheets and invoices calculate with decimal hours because they can be multiplied by an hourly rate directly. Time cards and clocks show hours and minutes because that is how people read time.

Decimal hours back to minutes

To go the other way, multiply the decimal part by 60. 7.4 hours is 7 hours and 0.4 × 60 = 24 minutes, so 7:24. Rounded decimals give approximate minutes: 0.33 hours is 19.8 minutes, which rounds to 20.

Common conversions

These come up on almost every timesheet:

  • 15 minutes = 0.25 hours
  • 20 minutes = 0.33 hours
  • 30 minutes = 0.5 hours
  • 40 minutes = 0.67 hours
  • 45 minutes = 0.75 hours
  • 50 minutes = 0.83 hours

Frequently asked questions

How do I convert minutes to decimal hours?

Divide the minutes by 60. For example, 45 minutes is 45 ÷ 60 = 0.75 hours.

What is 8 hours 30 minutes in decimal?

8.5 hours. 30 minutes is half an hour, so 8:30 equals 8.50 decimal hours.

How do I convert decimal hours to minutes?

Multiply the decimal part by 60. 0.75 hours is 0.75 × 60 = 45 minutes.

Are industrial minutes the same as decimal hours?

Yes. Industrial minutes divide an hour into 100 units, which is the same as writing time in decimal hours.

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