Speed Calculator
Calculates average speed from distance and elapsed time.
How it works
Calculates average speed from distance and elapsed time.
Formula and assumptions
Average speed = distance ÷ time. The result is km/h when distance is entered in kilometres and time in hours; it does not represent instantaneous speed.
Example
Use the sample values, calculate, and change one input at a time.
Frequently asked questions
Are results exact? Results depend on the assumptions and inputs above.
Can I use this for professional decisions? Verify critical results independently.
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Frequently asked questions
Does this calculate instantaneous speed?
No. It calculates average speed over the distance and time you enter.
What should I check before relying on the result?
Confirm the input units and assumptions described above; independently verify safety-critical, medical, financial or professional decisions.