Shawn's
Multiline Duration
Add and subtract durations, one line at a time.
Multi-line calculator
Duration
Type digits; colons are added automatically.
12213 → 1:22:13 · Add .250 for milliseconds. Extra seconds and minutes carry over when you leave the field.
Keyboard: Enter adds a line with the same operation. Shift + Enter adds one with the opposite operation. Shift + Plus / Minus changes the current line’s operation.
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