Time Adder: Sum Hours, Minutes and Seconds

Add up a list of times in hh:mm:ss, minutes or 1h 30m format, subtract entries, get totals in hours and decimal hours, and add the sum to a clock time.

Durations (one per line)

Formats: 1:30:15, 1:30, 90 (minutes), 1h 30m, 1.5h, 2d 4h, 45s. Start a line with - to subtract it.

Two-part values like 1:30 mean

Add the total to a clock time (optional)

For example a start time of 09:00.

Total of 3 durations

4:00:30

In words

4 hours, 30 seconds

Decimal hours

4.0083

Total minutes

240.5

Total seconds

14,430

What is Time Adder?

Adds up a list of durations, one per line, and gives the total. Lines starting with a minus sign are subtracted. Several formats can be mixed, such as 1:30:15, 45m, 1.5h or 2d 4h.

How to use Time Adder

Type or paste durations into Durations (one per line); start a line with - to subtract it.
Choose what two-part values like 1:30 mean: hours:minutes or minutes:seconds.
Read the total as h:mm:ss, in words, in decimal hours, minutes and seconds.
Optionally enter a clock time to see the time of day after adding the total.

Example

Input

1:30
90m
-15s
1h 20m 10s

Output

4:19:55 (15,595 seconds)

When to use Time Adder

Use it to total video clip lengths, lap or split times, logged hours or cooking steps. For start/end times of shifts use the time duration calculator; for calendar dates use the date calculator.

How Time Adder works

Each line is parsed into seconds: h:mm:ss values, two-part values according to your choice, a plain number as minutes, or unit notation with d, h, m and s (decimals allowed, e.g. 1.5h). Lines that cannot be read are reported by line number and ignored. The signed seconds are summed; the total is formatted with unlimited hours (e.g. 27:15:00) and, for clock times, wrapped around 24 hours with a day counter.