HH:MM:SS to Seconds Converter

Free time to seconds converter. Convert HH:MM:SS format to total seconds. Essential for calculations and programming.

Convert any time in HH:MM:SS format to total seconds. Essential for calculations, programming, and any application requiring seconds as the unit of time.

Common use cases

  • Video timestamp calculations
  • Audio file duration totaling
  • Programming time conversions
  • Sports timing calculations
  • Any second-based calculations

How to use

  1. Enter time in HH:MM:SS format
  2. Or enter hours, minutes, seconds separately
  3. View total seconds instantly
  4. Handle times over 24 hours
  5. Copy the result for use

FAQ

What format should I use?

Enter as HH:MM:SS (e.g., 01:30:45) or just MM:SS for shorter times.

Can I enter more than 24 hours?

Yes, enter 36:00:00 and get 129,600 seconds—no limit on hours.

Are decimals supported?

Enter decimal seconds (like 01:30:45.5) for sub-second precision.