⏱ Time Calculator Pro
Add, subtract, convert time — with step-by-step results you can copy & download.
First Time Value
Second Time Value
✓ Result
Equivalent values
Add or Subtract from a Date
Time to add / subtract
✓ Result
Duration Between Two Dates
✓ Duration
Time Expression Calculator
Use + and − operators between time values. Leave spaces between numbers and units.
2d 3h 4m + 1d 5h
8h – 2h 45m
3d + 18h 30m – 2d
90m + 45m + 30m
Complex
✓ Result
Start typing to see step-by-step result…
Stopwatch
00:00:00.000
Countdown Timer
00:05:00
Quick Presets
1 min
5 min
10 min
15 min
20 min
25 min
30 min
45 min
1 hour
2 hours
Time Unit Converter
✓ All Conversions
Enter a value above to see all conversions