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Kilowatt-hour to BTU Conversion

Enter an amount of energy in kilowatt-hours and read back the same energy in BTU. One kilowatt-hour is about 3412.14163312794 BTU, the rounded value of 3600000 joules divided by 1055.05585262 joules, and the calculator multiplies your input by that exact ratio.

How to convert kilowatt-hours to BTU

Kilowatt-hours and BTUs are two ways of writing the same quantity, energy, so switching from one to the other takes a single multiplication. Type the figure in kilowatt-hours into the field above, press Convert, and the answer appears in BTU.

Going the other way is the reverse step: divide a BTU amount by about 3412.14163312794, or multiply it by about 0.000293071070172222, to restate it in kilowatt-hours. The chart further down lists ready-made pairs, so a familiar amount can be looked up instead of calculated.

The kWh to BTU formula

Two definitions set everything else: 1 BTU (IT) is exactly 1055.05585262 joules and 1 kilowatt-hour is exactly 3600000 joules. Dividing them gives 1 kWh ≈ 3412.14163312794 BTU, a rounded figure rather than an exact one.

Written out: energy in BTU ≈ energy in kilowatt-hours x 3412.14163312794.

For example, feeding 5 kilowatt-hours through that multiplication lands at about 17,060.71 BTU, which is the same figure the chart shows for 5 kWh.

Reading the conversion chart

The chart pairs whole kilowatt-hour amounts, from 1 kWh up to 10,000 kWh, with their BTU (IT) equivalents rounded to two decimal places. Because the relationship is a straight multiplication, any amount that is not listed can still be handled: scale a nearby row or use the field above.