Watts to Horsepower - Metric Tables

refrigeration units to watts years
If you can't find the units you need read the message about similar types below.
You might be asking the impossible by converting into the wrong units.
For metric conversions go to a unit starting with -
a b c d e f g h i j k l m n o p q r s t u v w y

These units multiplied by ...... ..this factor will... ..convert to these units.
tablespoons (UK & metric) 15 millilitre
tablespoons (US) 14.78676 millilitre
tap (thread) see table pilot drill size
teaspoons (UK & metric) 5 millilitre ( = cu.cm = cc)
teaspoons (US) 4.928922 cubic cm ( = cc )
teaspoon + other spoons see table kitchen data or medical
tex (thread) see table grams per 1000 metre
time units see table seconds to years
therm (European) 1.05506E+08 joule
therm (US) 1.054804E+08 joule
thermie 4.1855E+06 joule
thou (mil) 2.54E-05 metre
thread (bolt) see table spanner size
tons (long) 1016.047 kilograms
tons (long) 2240 pounds
tons (long) 1.12 tons (short)
tons (tonne)(metric) 1000 kilograms
tons (metric) 2205 pounds
tons (short) 32000 ounces
tons (short) 907.1847 kilograms
tons (short) 2000 pounds
tons (short) 2430.56 pounds (troy)
tons (short) 0.89287 tons (long)
tons (short) 0.9071847 tonnes (metric)
tons (short)/sq.ft. 9765 kgs/sq meter
tons (short)/sq.ft. 2000 pounds/sq in
tons of water/24 hrs 83.333 pounds of water/hr
tons of water/24 hrs 0.16643 gallons/min
tons of water/24 hrs 1.3349 cu ft/hr
tons refrigeration 12000 btu per hour
tons refrigeration 3024.117 kilocalorie per hour
tons refrigeration 3517.2 watts
torr 133.32237 pascal
unit pole 1.256637E-07 weber ( Wb )
volt inch 0.3937 volt/cm
volt (absolute) 0.003336 statvolts
watts 3.4129 Btu/hr
watts 0.05688 Btu/min
watts 1.0E+7 erg/sec
watts 44.27 foot-lbs/min
watts 0.7378 foot-lbs/sec
watts 1.34E-03 horsepower
watts 1.36E-03 horsepower (metric)
watts 0.01433 kg-calories/min
watts 0.001 kilowatts
watts 0.0002843 tons refrigeration
watts ( see details ) watts/volts amps
watts (absolute) 0.056884 Btu (mean)/min
watts (absolute) 1 joules/sec
watt hour 3600 joule
watt-hours 3.413 Btu
watt-hours 3.60E+10 ergs
watt-hours 2656 foot-pounds
watt-hours 859.85 gram-calories
watt-hours 1.34E-03 horsepower-hrs
watt-hours 0.8605 kilogram-calories
watt-hours 367.2 kiloram-metres
watt-hours 0.001 kilowatt-hrs
watt (international) 1.0002 watt (absolute)
webers 1.00E+08 maxwells
webers 1.00E+05 kilolines
webers/sq in 1.55E+07 gausses
webers/sq in 1.00E+08 lines/sq in
webers/sq in 0.155 webers/sq cm
webers/sq in 1550 webers/sq meter
webers/sq metre 1.00E+04 gausses
webers/sq metre 6.45E+04 lines/sq in
webers/sq meter 1.00E-04 webers/sq cm
webers/sq metre 6.45E-04 webers/sq in
week 7 day
week 168 hour
week 10080 minute (time)
week 0.2299795 month
week 6.05E+05 second
yards 91.44 centimeters
yards 0.5 fathom
yards 3 foot
yards 36 inches
yards 9.14E-04 kilometers
yards 0.9144 metres
yards 4.93E-04 miles (nautical)
yards 5.68E-04 miles (statute)
yards 914.4 millimeters
year (mean of 4 year period) 365.25 day ( more on time )
year (mean of 4 year period) 8766 hour
year (mean of 4 year period) 5.26E+05 minute (time)
year (mean of 4 year period) 3.155815E+07 second (time)
year (mean of 4 year period) 52.17857 week
These units multiplied by ...... ..this factor will... ..convert to these units.
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Related pages
" Home page
" Info on SI Units
" SI Unit Descriptions
" SI Derived Units
" SI Prefixes (mega, giga)
" Imperial/UK Units
" Scientific Notation
--(i.e. what is 1.00E+09)

Detail pages
" Feet to metres calculator
" Metres to feet calculator
British Thermal Units Btu
" Density of bulk materials
" Density of liquids
" Specific Gravity of water
" Density of metals
" Density of woods
" Kitchen metric
" Medical metric
" Parts per million - ppm
" Clothing metric
" Yarn metric
" Time
" cc to hp
" Paper & Envelopes
" Gross to Nett price
" Nett to Gross price
" Add on Commission
" Sheet metal swg - mm
" Wire & rod swg - awg
" Electrical wire swg - awg
" Steam tables (4 pages)
" Watts, amps, volts, ohms
" M Threads & spanners
" Self tapping screws
" M tap & pilot drill sizes
Other useful sections


We have tried to be accurate with the above table but cannot be held responsible for inaccuracies.
Go back to first principals and double check your calculations if the result is 'mission critical'.

The scientific notation used in the factors column helps to reduce long numbers to a manageable width. E+01 means moving the decimal point one space to the right so 1.00E+01 is shorthand for 10, then 1.33E+00 stays at 1.33 and 1.33E-01 becomes 0.133. The format tends to be used when the figure gets longer so E+09 or E-09 cuts out a lot of noughts.

Task: How many sq.rods in 10 acres.
From the tables: 1 acre = 160 sq.rods, so
10 acres x 160 = 1600 sq.rods
When you want to reverse the conversion,
divide by the factor viz.
1600 sq.rods/160 = 10 acres

Impossible Conversions
Remember that you cannot create energy only convert it. Likewise, you will not find a conversion from pounds to metres - the basic units must remain the same - mass converted to mass, length converted to length, et al.

You won't usually find a conversion from kilograms to grams - the prefix 'kilo' means '1,000' so a kilogram is in fact 1,000 grams in the same way as a kilometer is 1,000 metres [or about 1,000 yards in 'old money']. I have put a few in the table because visitors have asked for them. More examples can be found on the prefix table.

One handy metric link between units to remember is that 1 Litre [1000cc] of pure water weighs 1 kilogram.

If accuracy is critical beware of old versions of MS Excel which had problems rounding off numbers.

Metrication is a great help but has also created anomalies; I have seen pressure gauges changed from a commonly used psi to kg/cm.sq., bar, pascal, kPa and atmos but will no doubt move to a popular metric standard in a few decades.

More information on the SI System (Le Système International d'Unités) base units and definitions.


last modified: 8th. September 2011

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