Inputs data - value and unit, which we're going to convert

Value
Unit
Decimals

1 (wat) is equal to:

Unit	Symbol	Symbol (plain text)	Value
milliwatt	Show source $mW$	mW	1000
wat	Show source $W$	W	1
joule per second	Show source $\frac{J}{s}$	J/s	1
kilowatt	Show source $kW$	kW	0.001
megawatt	Show source $MW$	MW	0.000001
gigawatt	Show source $GW$	GW	1×10^-9

Unit	Symbol	Symbol (plain text)	Value
metric horsepower	Show source $hp(M)$	hp(M)	0.001359622
mechanical horsepower	Show source $hp(I)$	hp(I)	0.001341022
eletrical horsepower	Show source $hp(E)$	hp(E)	0.001340483
boiler horsepower	Show source $hp(S)$	hp(S)	0.000101942

Unit	Symbol	Symbol (plain text)	Value
foot-pound-force per hour	Show source $\frac{ft \times lbf}{h}$	ft·lbf / h	2655.2237374
foot-pound-force per minute	Show source $\frac{ft \times lbf}{min}$	ft·lbf / min	44.253728957
foot-pound-force per second	Show source $\frac{ft \times lbf}{s}$	ft·lbf / s	0.737562149
atmosphere cubic foot per hour	Show source $\frac{atm \times ft^3}{h}$	atm·cfh	1.254703185
atmosphere cubic foot per minute	Show source $\frac{atm \times ft^3}{min}$	atm·cfm	0.02091172
atmosphere cubic foot per second	Show source $\frac{atm \times ft^3}{s}$	atm·cfs	0.000348529

Unit	Symbol	Symbol (plain text)	Value
atmosphere cubic centimetre per hour	Show source $\frac{atm \times cm^3}{h}$	atm·cch	35529.2376018
atmosphere cubic centimetre per minute	Show source $\frac{atm \times cm^3}{min}$	atm·ccm	592.15396003
atmosphere cubic centimetre per second	Show source $\frac{atm \times cm^3}{s}$	atm·ccs	9.869232667
litre-atmosphere per hour	Show source $\frac{l \times atm}{h}$	l·atm/h	35.529237602
litre-atmosphere per minute	Show source $\frac{l \times atm}{min}$	l·atm/min	0.59215396
litre-atmosphere per second	Show source $\frac{l \times atm}{s}$	l·atm/s	0.009869233
poncelet	Show source $p$	p	0.001019716

BTU

Unit	Symbol	Symbol (plain text)	Value
BTU_IT per hour	Show source $\frac{BTU_{IT}}{h}$	BTU_IT/h	3.412141633
BTU_IT per minute	Show source $\frac{BTU_{IT}}{min}$	BTU_IT/min	0.056869027
BTU_IT per second	Show source $\frac{BTU_{IT}}{s}$	BTU_IT/s	0.000947817

other

Unit	Symbol	Symbol (plain text)	Value
calorie (International Table) per hour	Show source $\frac{cal_{IT}}{h}$	cal_IT/h	859.845227859
calorie (International Table) per minute	Show source $\frac{cal_{IT}}{min}$	cal_IT/min	14.330753798
calorie (International Table) per second	Show source $\frac{cal_{IT}}{s}$	cal_IT/s	0.238845897
lusec	Show source $\frac{l \times \mu mHg}{s}$	L·µmHg/s	7500.001875
square foot equivalent direct radiation	Show source $\text{sq ft EDR}$	sq ft EDR	0.014217257
ton of air conditioning	Show source $\text{ton AC}$	ton AC	0.001184553
ton of refrigeration (IT)	Show source $TR$	TR	0.000284345
ton of refrigeration (Imperial)	Show source $TR_{UK}$	TR (UK)	0.00025388

Some facts

Power determines the work done by a physical system in given time unit.
Power is a scalar. It means that it has no direction.
Basic power unit in SI system is 1W (one watt). Power has 1W value, when system done work 1 joule in time of 1 second:

$1W = 1J/1s$
The instantaneous power is defined as a derivative of work:

$P = \frac{dW}{dt}$
To calculate the average power over a period of time $[t_0, t_1]$ , we need to compute integral:

$P_{avg.} = \frac{1}{t_1 - t_0} \times \int\limits_{t_0}^{t_1} P(t) dt$
If work is constant (time independent), we can compute average power in simpler way using formula:

$P_{avg.}=\frac{W}{t}$
where:
- W is work,
- t is time.
The power consumed by the electric device can be calculated using the formula:

$P = U \times I$
where:
- U is the voltage,
- I the intensity of the electric current.
This property is used, eg. by popular power meters available on the market, which measure the electric power consumed by the device.
In alternative way, power can be understood as speed of energy emission.
If certain electric device charge e.g. 60W of power, then the same amount of power is emitted to the outside. This follows from the principle of conservation of energy. Almost all energy consumed by electrical devices is emitted as heat. This problem has become particularly noticeable with the rapid development of computers. In the early 90s processors found in personal computers do not required special cooling. Beggining from 586 (Pentium), the CPU fan has become an integral part of any personal computer.

How to convert

Enter the number to field "value" - enter the NUMBER only, no other words, symbols or unit names. You can use dot (.) or comma (,) to enter fractions.
Examples:
- 1000000
- 123,23
- 999.99999
Find and select your starting unit in field "unit". Some unit calculators have huge number of different units to select from - it's just how complicated our world is...
And... you got the result in the table below. You'll find several results for many different units - we show you all results we know at once. Just find the one you're looking for.

Tags and links to this website

Tags:

power · horsepower · watt · power_unit_converter

Tags to Polish version:

moc · wat · kon_mechaniczny · konwerter_jednostek_mocy

What tags this calculator has

CONVERTER · PHYSICS · A -> Z (all)

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Ancient version of this site - links

"Calculla v1" version of this calculatorIn December 2016 the Calculla website has been republished using new technologies and all calculators have been rewritten. Old version of the Calculla is still available through this link: v1.calculla.com. We left the version 1 of Calculla untouched for archival purposes.
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