Time to Seconds Converter

Convert hours, minutes, and seconds to total seconds.

2 hours, 30 minutes, 45 seconds:

1 hour, 0 minutes, 0 seconds:

1. Enter hours, minutes, and seconds
2. Click "Convert" to see total seconds

| Hours | Minutes | Seconds | Total Seconds | |-------|---------|---------|---------------| | 1 | 0 | 0 | 3,600 | | 2 | 0 | 0 | 7,200 | | 1 | 30 | 0 | 5,400 | | 0 | 1 | 0 | 60 | | 0 | 0 | 1 | 1 | | 1 | 1 | 1 | 3,661 | | 2 | 2 | 2 | 7,322 | | 24 | 0 | 0 | 86,400 |

To add multiple times, convert each to seconds, sum them, then convert back.

Example: Add 1:30:00 and 2:45:30

1. 1:30:00 = 5,400 seconds
2. 2:45:30 = 9,930 seconds
3. Sum = 15,330 seconds
4. Convert back: 4 hours, 15 minutes, 30 seconds

• Audio and video editing
• Sports timing
• Exercise workouts
• Productivity tracking
• Programming calculations

Can I enter decimal values? Yes, enter 1.5 for 1 hour 30 minutes.

How do I convert back to time? Divide by 3,600 for hours, remainder by 60 for minutes.

What about milliseconds? Multiply your seconds by 1,000 for milliseconds.

Can I subtract times? Yes, enter negative values for the duration to subtract.

Is 60 minutes exactly 3,600 seconds? Yes, by definition: 60 × 60 = 3,600.

How many seconds in a day? 86,400 seconds (24 × 60 × 60).