Average Speed Calculator
Calculate average speed, distance, or time. Enter any two values to find the third. Works in mph, km/h, or any consistent unit.
Part of our Math & Percentage Calculators collection.
Average Speed Calculator
Free online calculator
How to Use This Calculator
- 1
Select what you want to find.
- 2
Enter the two known values.
- 3
See the result instantly.
Speed Distance Time Formula
Speed = Distance / Time Distance = Speed × Time Time = Distance / Speed The 'magic triangle': cover the variable you want — what's left is the formula.
Example Calculation
Example: 120 miles in 2 hours
Inputs
calcMode: speeddistance: 120timeHours: 2
Result
60 mph
Speed = 120 miles ÷ 2 hours = 60 mph.
Frequently Asked Questions
How do I calculate average speed for a trip with stops?
Use total distance ÷ total time including stops. For example, 100 miles in 2.5 hours (including a 30-minute stop) = 40 mph average.