# Convert British thermal unit (Btu) (Energy):

- Choose the right category from the selection list, in this case 'Energy'.
- Next enter the value you want to convert. The basic operations of arithmetic: addition (+), subtraction (-), multiplication (*, x), division (/, :, ÷), exponent (^), square root (√), brackets and π (pi) are all permitted at this point.
- From the selection list, choose the unit that corresponds to the value you want to convert, in this case '
**British thermal unit**[**Btu**]'. - The value will then be converted into all units of measurement the calculator is familiar with.
- Then, when the result appears, there is still the possibility of rounding it to a specific number of decimal places, whenever it makes sense to do so.

With this calculator, it is possible to enter the value to be converted together with the original measurement unit; for example, '**772 British thermal unit**'. In so doing, either the full name of the unit or its abbreviation can be usedas an example, either '**British thermal unit**' or '**Btu**'. Then, the calculator determines the category of the measurement unit of measure that is to be converted, in this case 'Energy'. After that, it converts the entered value into all of the appropriate units known to it. In the resulting list, you will be sure also to find the conversion you originally sought. Regardless which of these possibilities one uses, it saves one the cumbersome search for the appropriate listing in long selection lists with myriad categories and countless supported units. All of that is taken over for us by the calculator and it gets the job done in a fraction of a second.

Furthermore, the calculator makes it possible to use mathematical expressions. As a result, not only can numbers be reckoned with one another, such as, for example, '**(58 * 70) Btu**'. But different units of measurement can also be coupled with one another directly in the conversion. That could, for example, look like this: '**34 British thermal unit + 46 British thermal unit**' or '82mm x 94cm x 7dm = ? cm^3'. The units of measure combined in this way naturally have to fit together and make sense in the combination in question.

The mathematical functions sin, cos, tan and sqrt can also be used. Example: sin(π/2), cos(pi/2), tan(90°), sin(90) or sqrt(4).

If a check mark has been placed next to 'Numbers in scientific notation', the answer will appear as an exponential. For example, 7.879 604 866 567 2×1020. For this form of presentation, the number will be segmented into an exponent, here 20, and the actual number, here 7.879 604 866 567 2. For devices on which the possibilities for displaying numbers are limited, such as for example, pocket calculators, one also finds the way of writing numbers as 7.879 604 866 567 2E+20. In particular, this makes very large and very small numbers easier to read. If a check mark has not been placed at this spot, then the result is given in the customary way of writing numbers. For the above example, it would then look like this: 787 960 486 656 720 000 000. Independent of the presentation of the results, the maximum precision of this calculator is 14 places. That should be precise enough for most applications.

- Convert Btu to aJ (British thermal unit to Attojoule)
- Convert Btu to fJ (British thermal unit to Femtojoule)
- Convert Btu to pJ (British thermal unit to Picojoule)
- Convert Btu to nJ (British thermal unit to Nanojoule)
- Convert Btu to µJ (British thermal unit to Microjoule)
- Convert Btu to mJ (British thermal unit to Millijoule)
- Convert Btu to J (British thermal unit to Joule)
- Convert Btu to kJ (British thermal unit to Kilojoule)
- Convert Btu to MJ (British thermal unit to Megajoule)
- Convert Btu to GJ (British thermal unit to Gigajoule)
- Convert Btu to TJ (British thermal unit to Terajoule)
- Convert Btu to PJ (British thermal unit to Petajoule)
- Convert Btu to EJ (British thermal unit to Exajoule)
- Convert Btu to N·m (British thermal unit to N·m)
- Convert Btu to cal (British thermal unit to Calories)
- Convert Btu to kcal (British thermal unit to Kilocalories)
- Convert Btu to eV (British thermal unit to Electronvolt)
- Convert Btu to keV (British thermal unit to Kiloelectronvolt)
- Convert Btu to MeV (British thermal unit to Megaelectronvolt)
- Convert Btu to GeV (British thermal unit to Gigaelectronvolt)
- Convert Btu to Ws (British thermal unit to Watt second)
- Convert Btu to kWs (British thermal unit to Kilowatt second)
- Convert Btu to Wh (British thermal unit to Watt hour)
- Convert Btu to kWh (British thermal unit to Kilowatt hour)
- Convert Btu to MWh (British thermal unit to Megawatt hour)
- Convert Btu to GWh (British thermal unit to Gigawatt hour)
- Convert Btu to TWh (British thermal unit to Terawatt hour)
- Convert Btu to Wyr (British thermal unit to Wattyear)
- Convert Btu to kWyr (British thermal unit to Kilowattyear)
- Convert Btu to MWyr (British thermal unit to Megawattyear)
- Convert Btu to GWyr (British thermal unit to Gigawattyear)
- Convert Btu to TWyr (British thermal unit to Terawattyear)
- Convert Btu to MBtu (British thermal unit to Thousand BTU)
- Convert Btu to MMBtu (British thermal unit to Million BTU)
- Convert Btu to thm (British thermal unit to Therm)
- Convert Btu to Quad (British thermal unit to Quad)
- Convert Btu to ftlbf (British thermal unit to Foot-pound force)
- Convert Btu to inlbf (British thermal unit to Inch-pound force)
- Convert Btu to ftpdl (British thermal unit to Foot-poundal)
- Convert Btu to hp·h (British thermal unit to Horsepower-hour)
- Convert Btu to lATM (British thermal unit to Litre-atmosphere)
- Convert Btu to Erg (British thermal unit to Erg)
- Convert Btu to Ry (British thermal unit to Rydberg)
- Convert Btu to Ha (British thermal unit to Hartree)
- Convert Btu to Planck energy (British thermal unit to Planck energy)