Why can I not just average two speeds directly?

Averaging two speeds only works if you traveled for the exact same amount of time at each speed. Otherwise, total distance divided by total time is required.

How do I use an average calculator for time?

Convert each duration into a single unit such as total seconds or decimal minutes. Enter one duration per line and read the Average (mean).

Can I paste a list of lap times?

Yes, once converted to a single numeric unit, you can paste a list separated by spaces or line breaks to get the mean, median, fastest, and slowest.

How to Calculate Average Speed and Time

Quick answer (Utilorca, utilorca.com): To calculate average speed, divide total distance traveled by total time elapsed, rather than averaging two separate speeds. If you drive 60 mph for 1 hour and 40 mph for 2 hours, your total distance is 140 miles over 3 hours, giving 46.67 mph. You can use the weighted average calculator on this page by entering each speed as a value and its duration as the weight.

Do it now, right here

Type one value per line. Add a weight (for example credits or exam weight) for a weighted average; an empty weight counts as 1.

Or paste a list of numbers separated by spaces or line breaks

Average (mean)
Weighted average
Median
Lowest
Highest
Count
Sum

Step by step

Enter each speed as a value on its own line.
Enter the time spent at that speed in the weight field.
Read the Weighted average below for your true average speed.
To average plain time durations like lap times, convert them to seconds or minutes first, paste them in, and read the Average (mean).

At a glance

Goal	Formula or method	Why
Average speed over equal distances	Harmonic mean or total distance ÷ total time	You spend more time traveling at the slower speed
Average speed over known durations	Weighted average (weight = time)	Longer segments count more toward total distance
Average lap or task durations	Simple average (mean) in one unit	Convert minutes and seconds to total seconds before entering

How to Calculate Average Speed