What is a time calculator?
A time calculator adds or subtracts hours, minutes, and seconds from a given time.
Date & Time
Time Calculator
Calculate time values directly in your browser. Add or subtract hours, minutes, and seconds and convert the result into a readable time.
Tool
Time Calculator
Calculate time values directly in your browser. Add or subtract hours, minutes, and seconds and convert the result into a readable time.
This tool runs in your browser. Your input is processed locally and is not uploaded.
About this Tool
Use this free time calculator to calculate time before or after a given time of day. Enter a start time, add or subtract hours, minutes, or seconds, and see the final time immediately.
Conversion Formula
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Time calculation adds or subtracts the selected hours, minutes, and seconds from the start time. If the result passes midnight, the calculator can roll over to the next or previous day.
Examples
- 14:30 + 2 hours 15 minutes = 16:45
- 09:00 - 75 minutes = 07:45
- 23:40 + 45 minutes = 00:25 on the next day
Frequently Asked Questions
Can the result go past midnight?
Yes. If the calculated time passes midnight, the result can show the next or previous day rollover.
Can I subtract minutes from a time?
Yes. You can subtract hours, minutes, or seconds from the start time.
Does this tool calculate time zones?
No. This calculator works with time values only. Use the time zone converter to convert between time zones.
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