Time Calculator

Add or Subtract Time

This tool allows you to add or subtract hours, minutes, and seconds from any base time. It is useful for calculating end times of events, shift end times, cooking times, or any situation where you need to adjust time.

How it works:

The calculator converts everything into total seconds, performs the addition or subtraction, and then converts the result back into hours, minutes, and seconds (handling carry-over correctly, including going past midnight).

Time Duration Calculator

This calculates the exact duration between any two times. It is commonly used to calculate working hours, meeting lengths, travel time, or the length of any event.

What it calculates:

• Hours, Minutes, and Seconds between two times
• Total hours (including fractional)
• Total minutes and seconds

Important Notes

• If the End Time is earlier than the Start Time, the calculator assumes the End Time is on the next day.
• All calculations are done in 24-hour format internally for accuracy.
• This calculator does not account for time zones or daylight saving changes.

Common Use Cases

• Calculate how many hours you worked today
• Find out what time you will finish if you start at 9:00 AM and work for 7 hours 30 minutes
• Determine the length of a flight or meeting
• Calculate overtime hours