SimpleToolsHub
Add/Subtract Time Calculator
Instantly add or subtract hours, minutes, or seconds from any date/time or duration.
All calculation is in your browser for privacy.
How it works:
Enter a date/time or a duration (e.g. 2025-07-01 18:00 or 02:15:00), pick add or subtract, and enter how much to adjust.
Works for durations and absolute date/times.
Enter a date/time or a duration (e.g. 2025-07-01 18:00 or 02:15:00), pick add or subtract, and enter how much to adjust.
Works for durations and absolute date/times.