# Exact Horsepower to Watt Calculation

Also know as: Where does 37284993579113511/50000000000000 come from?

1 hp = 33000 ft-lbf/min by definition

1 min = 60 s

1 foot = 3048/10000 (0.3048) meter

1 lb = 45359237/100000000 (0.45359237) kg

1 g = 196133/20000 (9.80665) m/s²

therefore:

1 hp = = watt

### Exact results

1 hp = 37284993579113511/50000000000000 watt exactly (irreducible fraction) or

1 hp = 745.69987158227022 watt exactly (decimal)

### See the input on Wolfram Alpha

http://www.wolframalpha.com/input/?i=%2833000*3048*45359237*196133%29%2F%2860*10000*100000000*20000%29

### Compare to the given fraction:

http://www.wolframalpha.com/input/?i=37284993579113511%2F50000000000000

Where used:

Embedded images from Wolfram Alpha

# Feet per second and Knots

### Quick conversion between Feet per second (ft/s) & Knots (kn):

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ft/s:

kn:

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# Feet per second and Miles per hour

### Quick conversion between Feet per second (ft/s) & Miles/h (mph):

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mph:

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# Knots and Miles per hour

### Quick conversion between Knots (kn) & Miles/h (mph):

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mph:

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# Meters per second to Miles per hour

### Quick Meters/s (m/s) / Miles/h (mph) Conversion:

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# Meters per second to Kilometers per hour

### Quick Meters/s (m/s) / Kilometers/h (km/h) Conversion:

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