Calculator
Time Calculator
Add or subtract hours and minutes, or measure the gap between two clock times.
What it calculates
Start from a clock time and add or subtract a duration. Crossing midnight shows the extra day. Difference treats an earlier end time as the next day.
Questions
Is this in the Calculator tool?
Yes. Open Calculator, then choose Time. The other calculators are in the same place.
Are values uploaded?
No. The calculation runs in this browser.