Converter

Kilowatt-hours to British thermal units Converter

Type a value in kilowatt-hours and get the british thermal units answer instantly — with the formula and a reference table right below.

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Your result

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British thermal units = Kilowatt-hours × 3,412.14

0.5 kWh

1,706.07 BTU

1 kWh

3,412.14 BTU

2 kWh

6,824.28 BTU

3 kWh

10,236.42 BTU

5 kWh

17,060.71 BTU

10 kWh

34,121.42 BTU

15 kWh

51,182.12 BTU

20 kWh

68,242.83 BTU

25 kWh

85,303.54 BTU

30 kWh

102,364.25 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

10,000 kWh

34,121,416.33 BTU

Kilowatt-hours to British thermal units Converter guide

What does this converter do?

This page converts kilowatt-hours (kWh) to british thermal units (BTU) instantly as you type. It is one focused pair from the full Energy converter, which handles every supported energy unit in both directions.

How is the conversion calculated?

British thermal units = Kilowatt-hours × 3,412.14. Multiply the kilowatt-hours value by 3,412.14. The factor is fixed, so the math is deterministic and repeatable.

When kWh to BTU comes up

You are comparing an electric heater or heat pump rated in kilowatts with a gas furnace or air conditioner rated in BTU per hour, checking a utility bill in kWh against a heating estimate in BTU or therms, sizing a water heater or space heater from an appliance spec sheet, or working through an HVAC load calculation that mixes electrical and thermal units. Note this converts energy; BTU/h is a power rating.

Quick mental rule

Multiply kilowatt-hours by 3,400: 10 kWh × 3,400 = 34,000 BTU against the exact 34,121 BTU. The true factor is 3,412.14, so 3,400 understates by only about 0.4%; rounding to 3,500 overstates by 2.6%. Remember 1 kWh is about 3,412 BTU and 3.5 kWh is about one ton of cooling (12,000 BTU).

Worked example

Worked example: 1 kWh converts to 3,412.14 BTU. Change the input above to convert your own value.

Common values

The reference table lists frequently searched amounts such as 1, 10, and 100 kWh. Amounts are shown rounded for readability; the live result keeps full precision.

Common questions

Frequently asked questions

How many BTU are in 1 kWh?

1 kWh = 3,600,000 J ÷ 1,055.05585262 J/BTU = 3,412.14 BTU.

How many BTU is 10 kWh?

10 kWh is 34,121.42 BTU — the heat from running a 1 kW heater for ten hours.

How many kWh is 12,000 BTU?

12,000 BTU (one ton-hour of cooling) is 3.5169 kWh of heat energy; the electricity used is lower because a heat pump moves more heat than it consumes.

How many BTU is 1,000 kWh?

1,000 kWh is 3,412,141.63 BTU, or about 34.1 therms.