Common Units Converter, meteric <--> imperial

°F <--> °C

Temperature conversion

Length/Distance conversion

Area conversion

Volume conversion

Weight conversion

Pressure conversion

Power and Energy conversion

British System:

 Power, Watt to horse power:
 746W = 1 H.P.
 1000W (1 kW) = (1000 / 746) H.P. = 1.34 H.P.

 Power, Watt to BTU/hour:
 0.29307107 W = 1 BTU/h

 Energy, Joules to BTU:
 1055.06 Joules = 1055.06 W/s = 1 BTU

Metric System:

 735.5W = 1 H.P.
 1000W (1kW) = (1000/735.5) H.P. = 1.36 H.P.

 3.4121416 BTU/h = 1 W 

 0.9478 BTU = 1000 Joules = 1 KW/s

Speed conversion

Speed is expressed in length per time. However there are some special units:

Speed of light in vacuum= 1079252848.8 kilometer/hour = 299792458 meter/second
Speed of sound in air [mach]= 1225.044 kilometer/hour = 340.29 meter/second
1 knot = 1.852 kilometer/hour = 0.514 meter/second
1 mile/hour (mph) = 1.609344 kilometer/hour (km/h), use above length converter for mile and kilometer

Special names

Some old units in the metric system use old names that do not have the power prefixes. Those are:

1 millibar = 1hpa (hectopascal)
Liter: 1l = 1dm³ (cubic decimeter)
Tonn: 1t = 1000kg
1 are = 100 square meter = 100m², 1 hectare=10,000m²=0.01km²

Power prefixes used within the units of the metric system

No converter is needed to convert among the units of the metric system. You just multiply or divide by a factor which is given by the power prefix.
Example: 1km (kilometer) = 10³ m (meter)= 1000m (meter)

Prefix	Symbol	Factor
yotta	Y	10²⁴
zetta	Z	10²¹
exa	E	10¹⁸
peta	P	10¹⁵
tera	T	10¹²
giga	G	10⁹
mega	M	10⁶=1,000,000
kilo	k	10³=1000
hecto	h	10²=100
deka	da	10¹=10
deci	d	10^-1=1/10
centi	c	10^-2=1/100
milli	m	10^-3=1/1000
micro	μ (mu)	10^-6=1/1,000,000
nano	n	10^-9
pico	p	10^-12
femto	f	10^-15
atto	a	10^-18
zepto	z	10^-21
yocto	y	10^-24

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© Guido Socher, License: GPL, , This software is provided without warrenty of any kind.
Version: 2016-01-23