If you prefer the new NNM Pace Calculator JS.

Configuration

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Distance Configuration
Distance Split Unit Long form Compared to meters
in inches 0.0254 m
ft feet 0.3048 m
yd yards 0.9144 m
m meters 1 m
100m 100 m splits 100 m
200m 200 m laps 200 m
400m 400 m laps 400 m
500m 500 m splits 500 m
km kilometers 1000 m
mi miles 1609.344 m
nmi nautical miles 1852 m
au astronomical units 149597870700 m
ly light years 9460730472580800 m
pc parsecs 3.0857E+16 m
Pace Configuration
(Pace) Unit Long form Compared to m/s or s/m
/100m / 100m 0.01 s/m
/200m / 200m 0.005 s/m
/400m / 400m 0.0025 s/m
/500m / 500m 0.002 s/m
/km / km 0.001 s/m
/mi / mile 0.00062137119223733 s/m
/nmi / nmi 0.00053995680345572 s/m
ft/s ft / s 0.3048 m/s
yd/s yd / s 0.9144 m/s
m/s m / s 1 m/s
km/h km / h 0.27777777777778 m/s
mph mph 0.44704 m/s
kn knots 0.51444444444444 m/s
Ma Mach 343 m/s
c c 299792458 m/s
Time Configuration
hours:minutes:seconds (hh:mm:ss)