How many BTU are in a kilowatt-hour?

One kilowatt-hour equals 3412.142 BTU (International Table). Equivalently, 1 BTU is about 0.00029307 kWh.

How do I convert BTU to kWh?

Multiply BTU by 0.00029307107 (or divide by 3412.142). For example 10,000 BTU = 10,000 × 0.00029307 ≈ 2.93 kWh.

How do I convert kWh to BTU?

Multiply kWh by 3412.142. For example 2 kWh = 6824.28 BTU. Switch the direction in the tool to do this automatically.

Which BTU definition does this use?

It uses the International Table (IT) BTU of 1055.05585262 joules, the standard for HVAC, heating and cooling ratings, against the kilowatt-hour's 3,600,000 joules.

Is BTU a measure of power or energy?

BTU is energy, like the kilowatt-hour. BTU per hour (BTU/h) is power. This tool converts energy (BTU ↔ kWh); for cooling power you would use BTU/h.

How much does running a 10,000 BTU appliance cost?

A 10,000 BTU appliance running for one hour at its rated output uses about 2.93 kWh. Multiply that by your electricity price per kWh to estimate the cost.

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BTU to kWh Converter

BTU to kWh — heating and cooling energy

This converter changes British Thermal Units (BTU), common in HVAC, heating and appliance ratings, into kilowatt-hours (kWh) and back. It is handy for estimating energy use and running costs from a BTU rating.

How it works

Both units measure energy in joules, so the conversion is a fixed ratio. Using the International Table BTU (1055.05585262 J) and the kilowatt-hour (3,600,000 J):

1 BTU = 1055.05585262 ÷ 3,600,000 ≈ 0.00029307 kWh 1 kWh = 3,600,000 ÷ 1055.05585262 ≈ 3412.142 BTU

Pick a direction and the tool multiplies or divides by this factor.

Example

Convert 10,000 BTU to kWh:

10,000 × 0.00029307107 ≈ 2.9307 kWh

And 2 kWh back to BTU:

2 × 3412.142 ≈ 6824.28 BTU

BTU	kWh
1,000	0.293
5,000	1.465
10,000	2.931
100,000	29.307

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