EN

Average time calculator

This average time calculator adds up a list of times and divides by their number: 24:35, 25:10, 23:58 and 26:02 average 24:56.25. It handles minutes and seconds, hours, milliseconds and clock times such as bedtimes that cross midnight.

Source: NIST/SEMATECH e-Handbook of Statistical Methods, 1.3.5.1 Measures of Location: mean and median (read 15.10.2026). Updated: .

Formats: 24:35, 1:52:10, 0:45.2, 1h 20m, 95s. Separate with new lines, semicolons or spaces.
My ToolboxYour inputs are saved in this browser only.

Result

Average
Average time: 24:56.25 (4 times)
Summary
ValueResult
Number of times4
Average (mean)24:56.25
Median24:52.5
Fastest / shortest23:58
Slowest / longest26:02
Range2:04
Total1:39:45
Average in seconds1,496.25 s
Average in decimal minutes24.9375 min
Average in decimal hours0.41563 h
Each time
#TimeDifference from average
124:35−0:21.25
225:10+0:13.75
323:58−0:58.25
426:02+1:05.75
Calculated as total ÷ number of times; the median is the middle value of the sorted list.

How it is calculated

How to calculate an average time

Average = total time ÷ number of times. Convert each time to seconds, add them up, divide, and convert back. For 24:35, 25:10, 23:58 and 26:02 the total is 1:39:45 = 5,985 seconds; 5,985 ÷ 4 = 1,496.25 seconds = 24:56.25. The median, the middle value of the sorted list, is 24:52.5.

Examples

TimesAverage
24:35 · 25:10 · 23:58 · 26:0224:56.25
1:52:10 · 1:48:35 · 1:55:401:52:08.33
0:45.2 · 0:44.8 · 0:46.10:45.37
2:59 · 3:10 · 3:25 · 3:02 · 2:473:04.6

Minutes and seconds are not decimals: 3:04.6 means 3 minutes and 4.6 seconds, which is 3.0767 decimal minutes. To switch between the two, use the minutes to decimal hours converter; to add or subtract single times, the time calculator.

Average clock time across midnight

Clock times wrap around: averaging 11:30 PM and 12:30 AM as plain numbers gives noon, which is wrong. The calculator places the times on a 24-hour circle, cuts it at the largest gap between them and then takes the normal average. For comparison it also shows the vector mean from circular statistics, which treats each time as an angle of 15° per hour.

Clock timesPlain average (wrong)Average clock time
11:30 PM · 12:30 AM12:00 PM12:00 AM
10:45 PM · 11:15 PM · 12:10 AM · 1:20 AM11:52:30 AM11:52:30 PM
6:10 AM · 6:40 AM · 7:05 AM6:38:20 AM6:38:20 AM

Tips for lap and race times

Frequently asked questions

How do you calculate the average of times?

Convert every time to seconds, add them, divide by the number of times and convert back to minutes and seconds. 24:35, 25:10, 23:58 and 26:02 total 5,985 s; ÷ 4 = 24:56.25.

How do I average minutes and seconds?

Not as decimals: 2:59 and 3:10 average 3:04.5 (184.5 s). Averaging them as 2.59 and 3.10 gives 2.845, which is not a valid time – no minute has 84.5 seconds.

How do I average times that cross midnight?

Treat them as one span: 11:30 PM and 12:30 AM are one hour apart, so the average is 12:00 AM. Choose “Clock times” and the calculator does this for you.

What is the difference between the average and the median time?

The average uses every value; the median is the middle of the sorted list. One very slow lap pulls the average up but hardly moves the median.

Can I enter milliseconds?

Yes. Write the decimals after the seconds, for example 0:45.237; the average is shown with the same precision.

Sources and legal basis

As of: · Editorial policy

Related tools