Timestamp Calculator

This tool lets you add or subtract time from any Unix timestamp. Enter a starting timestamp, choose whether to add or subtract, and specify the number of days, hours, minutes, or seconds.

The result shows the new timestamp along with the corresponding UTC and local dates. This is handy when you need to calculate expiry times, schedule future events, or find timestamps from the past.

Common Scenarios

• Calculating when a token or session expires (add 1 hour)
• Finding the timestamp for a date 30 days from now
• Subtracting time to check what a timestamp was yesterday
• Testing time-based logic in your applications