Speed Calculator
Calculate speed, velocity, and convert between speed units. Free, fast, accurate — no signup, mobile-friendly, works in
Basic Calculation
Result
Speed: 10.00 km/h
Pace: 6:00 min/km
Speed Facts
- • Speed = Distance ÷ Time
- • Velocity includes direction, speed is magnitude only
- • Acceleration is the rate of change of velocity
- • Air resistance increases with the square of speed
- • Sound travels at ~343 m/s in air at room temperature
Speed Analysis
Speed
10.00 km/h
2.78 m/s
Distance
100.00 km
100000.00 m
Time
10.0hr
36000.00 seconds
Unit Conversions
Speed:
m/s:2.78
km/h:10.00
mph:6.21
ft/s:9.11
Speed Comparisons
human walk:2.0x faster than human walk
human run:1.8x slower than human run
bicycle:3.0x slower than bicycle
car city:5.0x slower than car city
Record Comparison
Driving record:
137.80 m/s
You: 2.0% of record
Pace Analysis
Pace (per km):6:00 min/km
Pace (per mile):9:39 min/mi
Average speed:10.00 km/h
Performance Tips
- • Regular maintenance improves performance
- • Weather conditions affect optimal speeds
🏃 Speed & Motion Tips
- • Always consider safety when increasing speed
- • Factor in environmental conditions and terrain
- • Gradual acceleration is more efficient than sudden bursts
- • Regular maintenance improves performance
- • Track your progress over time for improvement
- • Consider energy efficiency and environmental impact
How it works
A speed calculator relates speed, distance, and time. Speed is distance divided by time; rearranged, the same relationship finds distance (speed × time) or time (distance ÷ speed).
Speed, distance, time
Speed = distance ÷ time Distance = speed × time Time = distance ÷ speed
- distance
- how far traveled
- time
- how long it took
Worked example
- Traveled 150 miles
- In 2.5 hours
- Speed = 150 ÷ 2.5
Average speed = 60 mph.
Good to know
- This gives average speed over the whole trip, not the speed at any instant.
- Keep units consistent — miles with hours give mph; km with hours give km/h.
- Convert mph to km/h by multiplying by 1.609.