Time calculator · add minutes
Time calculator · add minutes: use starting time, minutes to add · negative to subtract. Review the formula, worked example and calculation steps.
Inputs
Use the units shown—
Enter your values and select Calculate.
Formula & explanation
Clock time = (starting minutes + change) mod 1440
Variables & units
- Starting time
- 24-hour time
- Minutes to add · negative to subtract
- Numeric value · minimum -1000000, maximum 1000000
Worked example
22:30 + 150 minutes gives 01:00 on the following day.
Assumptions
24-hour clock arithmetic; no timezone or daylight-saving transition.
Formula version 1.0.0. JavaScript floating-point arithmetic applies. Results display up to 6 decimal places; stored values retain available precision. Use the units shown.
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