Kilowatt Hours to BTU Converter

Kilowatt Hours to BTU

Convert kilowatt hours (kWh) to btu (BTU). Both measure work and power, and the conversion comes up in nutrition, electricity, fitness work.

The Formula

`` btu = kilowatt hours × 3412.14163313 kilowatt hours = btu × 0.000293071070172 `

One kilowatt hour is 3,412.14 btu, and one BTU is 2.9307e-4 kilowatt hours.

Conversion Table

Kilowatt Hours	BTU
1 kWh	3,412.14 BTU
2 kWh	6,824.28 BTU
5 kWh	17,060.71 BTU
10 kWh	34,121.42 BTU
25 kWh	85,303.54 BTU
50 kWh	170,607.08 BTU
100 kWh	341,214.16 BTU
500 kWh	1,706,070.82 BTU
1,000 kWh	3,412,141.63 BTU

The Other Direction

BTU	Kilowatt Hours
1 BTU	2.9307e-4 kWh
2 BTU	5.8614e-4 kWh
5 BTU	0.001465 kWh
10 BTU	0.002931 kWh
25 BTU	0.007327 kWh
50 BTU	0.014654 kWh
100 BTU	0.029307 kWh
500 BTU	0.146536 kWh
1,000 BTU	0.293071 kWh

What Each Unit Is

Kilowatt Hours (kWh) — 1,000 watt-hours, or 3.6 million joules. The unit electricity has been billed in since metering began.

BTU (BTU) — the energy to raise one pound of water by one degree Fahrenheit, or 1,055 joules. The imperial thermal unit, still standard for US heating, cooling and gas.

A Sense of Scale

• A home uses 8–30 kWh a day
• An EV takes 15–20 kWh per 100 km
• A window air conditioner is 5,000–12,000 BTU/h
• US furnaces are rated in BTU

Precision

The factor 3412.14163313 is rounded. For engineering work carry more digits than the table above, and round only at the end — rounding at each step compounds.

In Code

`javascript const kilowattHourToBtu = (value) => value * 3412.14163313; ``

Where This Conversion Comes Up

• Nutrition
• Electricity
• Fitness
• Heating
• Fuel

How Many Decimals Do You Need?

Rounding the factor costs accuracy, and how much depends on the factor. Converting 137 kWh with the factor truncated at each decimal place:

Decimals kept	Factor	137 kWh becomes	Error
0	3412	467,444	0.0042%
1	3412.1	467,457.7	0.0012%
2	3412.14	467,463.18	—
3	3412.142	467,463.45	—
4	3412.1416	467,463.4	—

A rule that holds for any conversion: round once, at the end. Rounding the factor and then multiplying compounds the error through every subsequent calculation, while carrying full precision and rounding the final answer does not.

The right number of significant figures is set by your input, not by the converter. If you measured kilowatt hours to three significant figures, the answer in btu is only good to three — writing more digits claims precision the measurement never had.