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Minutes to decimal hours formula
Decimal hours = minutes ÷ 60. So 45 minutes is 45 ÷ 60 = 0.75 hours, and 20 minutes is 0.33 hours (rounded).
Quick reference
15 min = 0.25 h · 30 min = 0.50 h · 45 min = 0.75 h · 60 min = 1.00 h.
Frequently asked questions
How do I convert 15 minutes to decimal?
15 ÷ 60 = 0.25 hours.
How do I convert 90 minutes to hours?
90 ÷ 60 = 1.5 hours, which is 1 hour and 30 minutes.
Why is 10 minutes not 0.10 hours?
Because an hour has 60 minutes, not 100. 10 minutes is 10 ÷ 60 ≈ 0.17 hours.