Energy Converter

Convert energy units or compute energy oil, coal, and natural gas equivalents and more with this one-to-many (O2M) mapping tool. Just input a value and press the Enter key.

Other conversion tools:: Length Converter; Mass Converter; Number Base Converter; Temperature Converter; and many more »

SI (metric)

yottajoule
zettajoule
exajoule
petajoule
terajoule
gigajoule
megajoule
kilojoule
hectojoule
dekajoule
joule
decijoule
centijoule
millijoule
microjoule
nanojoule
picojoule
femtojoule
attojoule
zeptojoule
yoctojoule

Miscellaneous

foot-pound force
foot-poundal
horsepower-hour
inch-pound force
meter-kilogram
quad
refrigeration ton

British Thermal Units

BTU (39 Fahrenheit)
BTU (50 Fahrenheit)
BTU (59 Fahrenheit)
BTU (60 Fahrenheit)
BTU (63 Fahrenheit)
BTU (IT)
BTU (mean)
BTU (million)
BTU (th)

Physics, Chemistry & Spectroscopy

atomic mass unit
electronvolt
erg
hartree
hertz
inverse centimeter
inverse meter
kelvin
planck energy
rydberg energy

Heat Energy

cal (15 Celsius)
cal (20 Celsius)
cal (4 Celsius)
cal (IT)
cal (mean)
cal (th)
cal|kgram (IT nutrition)
cal|kgram (mean nutrition)
cal|kgram (th nutrition)
kilocal (IT)
kilocal (mean)
kilocal (th)
therm (EC)
therm (US)
thermie

Electricity Equivalents

gigawatt-year
kilowatt-hours
petawatt-hours
terawatt-hours
terawatt-year
watt-hours
watt-seconds

TNT Equivalents

kilogram
kilotonne
megatonne
ton

Natural Gas Equivalents

billion cubic feet
billion cubic meters
billion tons liquefied
cubic feet
cubic meter
cubic meters (normal)
cubic meters (std)
million cubic meters (normal)
million cubic meters (std)
million tons liquefied
thousand cubic meters (normal)
thousand cubic meters (std)

Coal Equivalents

gigatonne of coal
kilogram of hard coal
megatonne of coal
metric ton of coal
russian fuel
short ton of coal
t hard coal
ton of coal
tonne of coal
tonne of russian fuel

Oil Equivalents

Gtoe (IT)
Mboe
Mtoe
boe
kboe
koe
ktoe
toe (IT)
toe (th)

Atmosphere-based

cubic centimeter of atms
cubic foot of atms
cubic yard of atms
gallon-atmosphere
gallon-atmosphere (US)
litre-atmosphere

Instructions

To use this tool, simply enter a value in any field and press the Enter key.
Results are given to 6 decimal places in scientific notation.

What is computed?

When appropriate, conversions follow NIST guidelines (NIST, 2016; 2006).
Some results might vary across reference sources (Wikipedia, 2016a; 2016b; APS, 2016; Unitjuggler, 2016).
You may format results according to your needs.
You may also want to follow NIST 2006 guidelines for expressing results to a given number of significant digits:
- If the first significant digit of the converted value is greater than or equal to the first significant digit of the original value, round the converted value to the same number of significant digits as there are in the original value.
- If the first significant digit of the converted value is smaller than the first significant digit of the original value, round to one more significant digit.

Who can use it?

Researchers, teachers, students, or anyone working with data conversions.

References

NIST (2016). Factors for Units Listed by Kind of Quantity or Field of Science. NIST Guide to the SI, Appendix B.9.
NIST (2006). The International System of Units (SI) - Conversion Factors for General Use. NIST Special Publication 1038.
Wikipedia (2016a). Conversion of units.
Wikipedia (2016b). Units of energy.
APA (2016). Energy Units.
UnitJuggler (2016). Energy Converter.

Energy Converter