Spread Rate unitsUse the following table to convert among various units. To convert from the units in a column to the units in a row, divide by the conversion factor. To convert from the units in a row to the units in a column, multiply by the conversion factor. Four significant figures are shown. Only half the table is provided to avoid roundoff errors. 

ft/min 
ch/h 
cm/s 
m/min 
km/h 
ft/s 
mi/h 
m/s 
ft/min 
1 







ch/h 
1.100 
1 






cm/s 
1.968 
1.790 
1 





m/min 
3.281 
2.983 
1.667 
1 




km/h 
54.68 
49.71 
27.78 
16.67 
1 



ft/s 
60.00 
54.55 
30.48 
18.29 
1.097 
1 


mi/h 
88.00 
80.00 
44.70 
26.82 
1.609 
1.467 
1 

m/s 
196.8 
179.0 
100.0 
60.00 
3.600 
3.281 
2.237 
1 
Examples: multiply 25 mi/h by 1.609 to get 40 km/h; divide 500 ft/min by 54.68 to get 9.14 km/h.
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