Date & Everyday

Time Calculator

Add or subtract durations expressed in hours and minutes.

First duration — hours First duration — minutes Operation Second duration — hours Second duration — minutes

How to use the time calculator

Add or subtract durations expressed in hours and minutes. Enter the requested values and select Calculate result. Check the units and options before interpreting the answer.

Formula and calculation method

Convert both durations to minutes, perform the operation, then convert back to hours and minutes.

Worked example

2 h 45 min + 1 h 30 min = 4 h 15 min.

Limitations and interpretation

Results depend on inputs, assumptions and rounding. Verify results before using them for consequential decisions. Health estimates are not medical diagnoses.

Frequently asked questions

Can a duration exceed 24 hours?

Yes, the result is a duration, not a clock time.

Can subtraction be negative?

Yes, if the second duration is larger.