Add/Subtract Time Calculator

Add or subtract time from a date or duration.

Add / Subtract

Choose mode and enter values

Result

Enter a time or date and amount to add/subtract.

Step-by-step Solution

Related Calculators

Time Duration

Time & Date

About This Calculator

Add or subtract time from a date or duration.

Everything is worked out in your browser as you type, so your figures never leave your device.

Pro Tips

Results update as you type — change any field to see the effect immediately.

Check that every value uses the same unit before comparing results.

Use the copy button to paste the add/subtract time figures into a note or spreadsheet.

Nothing is sent to a server, so you can use this with private figures.