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Energy

Convert BTU to kilowatt-hours

1 BTU=0.0002931kWh

Use the converter below to change any BTU value into kilowatt-hours instantly — with formula, conversion table, and real-world examples.

0.00029307

Conversion formula

Forward
kilowatt-hours = BTU × 0.0002931
Reverse
BTU = kilowatt-hours × 3,412.14

Example: 10 BTU × 0.0002931 = 0.002931 kWh.

About both units

From

British Thermal Unit

BTU

The British Thermal Unit equals approximately 1055 joules — the energy to raise 1 pound of water by 1 °F. Used for HVAC, heating, and air-conditioning capacity in the US. A 9000 BTU/h AC is a small room unit.

Real-world: Window AC: 5000–12,000 BTU/h. Central AC: 24,000–60,000 BTU/h. Home furnace: 60,000–100,000 BTU/h.
Read full british thermal unit reference →
To

Kilowatt-Hour

kWh

The kilowatt-hour equals 3.6 megajoules — energy delivered by 1 kW for 1 hour. It is the standard unit on electricity bills worldwide. A UK home uses about 2900 kWh/year; an EV charge adds 10–80 kWh depending on battery.

Real-world: UK home: ~2900 kWh/year. Tesla Model 3 battery: 60–80 kWh. Typical EV efficiency: 15–20 kWh/100 km.
Read full kilowatt-hour reference →

British Thermal Unit to Kilowatt-Hour conversion table

Common BTU to kilowatt-hours values for quick reference.

British Thermal Unit (BTU)Kilowatt-Hour (kWh)
1 BTU0.0002931 kWh
10 BTU0.002931 kWh
100 BTU0.02931 kWh
500 BTU0.1465 kWh
1,000 BTU0.2931 kWh
5,000 BTU1.46536 kWh
10,000 BTU2.93071 kWh
50,000 BTU14.6536 kWh
100,000 BTU29.3071 kWh
500,000 BTU146.536 kWh

Tips & common mistakes

Quick tips

  • 1 BTU = 1055.06 J = 0.293 Wh.
  • BTU/h (power) and BTU (energy) are different — don't confuse.
  • Tons of refrigeration: 12,000 BTU/h = 1 ton AC.

Avoid these

  • Confusing BTU and BTU/h — energy vs power.
  • Using kcal when BTU is requested in HVAC specs.
  • Treating all BTUs as exact — definitions vary (IT, thermochemical, etc.).

Frequently asked questions

How many kilowatt-hours in a british thermal unit?
One british thermal unit equals 0.0002931 kilowatt-hours.
How do I convert BTU to kilowatt-hours?
Multiply the british thermal unit value by 0.0002931 to get the equivalent in kilowatt-hours.
What is 100 BTU in kilowatt-hours?
100 BTU equals 0.02931 kilowatt-hours.
Is a british thermal unit bigger than a kilowatt-hour?
No. 1 british thermal unit equals 0.0002931 kilowatt-hours, so one british thermal unit is smaller.
How to convert BTU to kilowatt-hours without a calculator?
Multiply by 0 for a quick estimate; use a calculator for precise results.

Related energy conversions

📊 See full comparison matrix →

More from British Thermal Unit

BTU → J
1 = 1,055.06 J
BTU → kJ
1 = 1.05506 kJ
BTU → MJ
1 = 0.001055 MJ
BTU → Wh
1 = 0.2931 Wh
BTU → cal
1 = 252.164 cal
BTU → kcal
1 = 0.2522 kcal
BTU → eV
1 = 6.5851e21 eV
BTU → thm
1 = 1.0000e-5 thm

More to Kilowatt-Hour

J → kWh
1 = 2.7778e-7 kWh
kJ → kWh
1 = 0.0002778 kWh
MJ → kWh
1 = 0.2778 kWh
Wh → kWh
1 = 0.001 kWh
cal → kWh
1 = 1.1622e-6 kWh
kcal → kWh
1 = 0.001162 kWh
eV → kWh
1 = 4.4505e-26 kWh
thm → kWh
1 = 29.3071 kWh

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