Time Duration Sum Online

Sum durations entered one per line as HH:MM or HH:MM:SS, with optional millisecond fractions. Free time duration sum online, with no installation or account.

Tool capabilities

Input: TXT
Output: TXT · JSON

How to use Time Duration Sum

Sum durations entered one per line as HH:MM or HH:MM:SS, with optional millisecond fractions. This time duration sum works directly in your browser and is free to use without an account.

Paste or open your input in the editor.
Run the tool and inspect the output. If the input is invalid, correct the reported error and run it again.
Copy the result or download it to your device.

Time Duration Sum · Example

Input

01:30
02:45
00:45

Output

{
  "count": 3,
  "duration": "05:00:00",
  "milliseconds": 18000000,
  "hours": 5
}

Sum durations entered one per line as HH:MM or HH:MM:SS, with optional millisecond fractions.

Usage notes

Inputs and results are processed on this device. Tool content is not sent to a processing server.

Time Duration Sum