Enter values and calculate.
Result
Method
Hours and minutes become decimal hours with hours + minutes ÷ 60. In reverse, decimal hours are multiplied by 60 and rounded to the nearest whole minute; 1.5 hours becomes 1 hour 30 minutes.
Worked example
2 hours 45 minutes = 2 + 45/60 = 2.75 decimal hours. In reverse, 3.25 decimal hours = 3 hours 15 minutes.
Limits and assumptions
Hours must be nonnegative and no more than 1,000,000. Minutes must be a whole number from 0 through 59. Decimal input supports up to 10 decimal places. This is a duration converter, not a payroll or time-card calculator.
Date and time privacy
All supported calculations run locally with validated text and date-only arithmetic where appropriate. These educational utilities do not send entered values to a server, infer a location, or make professional scheduling decisions for you.