Speed, Pace & Kinematics Calculator
Solve distance-rate-time equations, convert athletic running paces, and compute multi-segment average velocities
Calculated Velocity
65.22 mph
104.96 km/h • 29.15 m/s
Meters per Second
29.15 m/s
SI standard unit
Nautical Speed
56.67 knots
Nautical miles per hour
Feet per Second
95.65 ft/s
Imperial linear velocity
Mach Number
Mach 0.086
At sea level (340.3 m/s)
Target Running Pace
8:35 / mi
5:20 / km • Velocity: 6.99 mph (11.25 km/h)
Pace per Kilometer
5:20 min/km
Metric interval split
400m Track Lap Split
2:08.0
Per standard running track lap
Equivalent 5K Split
26:40
At steady continuous pace
Equivalent 10K Split
53:20
At steady continuous pace
Average speed requires a time-weighted harmonic relationship: v_avg = total_distance / total_time.
Segment 1 (e.g., City / Outbound)
Time: 2h 00m
Segment 2 (e.g., Highway / Return)
Time: 1h 00m
True Journey Average Speed
40.00 mph
120.0 total miles traveled in 3h 00m
Harmonic vs. Arithmetic Delta
-5.00 mph
Simple average is 45.00 mph
Metric Velocity
64.37 km/h
17.88 m/s
Total Time Elapsed
3h 00m
Sum of leg durations
Total Combined Distance
120.00 mi
193.12 km