Add Time
Add or subtract time
Start with a date and time, then add or subtract a duration. Helpful for deadlines, timers, publishing, and time math.
How to use it
Enter the values
Use the inputs in the tool area. Results update on the page without sending data anywhere.
Copy or print
Use Copy result for quick sharing or Print when you need a simple record.
FAQ
What units can I add?
You can add or subtract days, hours, minutes, and seconds.
Does it show the final date?
Yes. The result includes the readable final date and the ISO timestamp.
Does it work offline?
Yes. All time math runs locally in your browser.