Aisha K.
Mar 12, 2026
Clean layout and the results update instantly. Exactly what I needed for a quick planning check.
Unit Converters
BTU to Kilowatt-Hours Converter
BTU
BTU → kWh
1 kWh
3,412 BTU → 1 kWh. 100,000 BTU furnace pulse → 29.3 kWh of heat energy.
- You typed
- 3,412 BTU
- One kWh is
- 3,412.1416 BTU
- How it’s calculated
- kWh = BTU ÷ 3,412.14 (IT calorie BTU).
BTU to Kilowatt-hours conversion table
Common BTU values in kWh. Same factor as the converter above: kWh = BTU ÷ 3,412.14 (IT calorie BTU).
| BTU | Kilowatt-hours |
|---|---|
| 0.25 BTU | 0.0001 kWh |
| 0.5 BTU | 0.0001 kWh |
| 1 BTU | 0.0003 kWh |
| 2 BTU | 0.0006 kWh |
| 5 BTU | 0.0015 kWh |
| 10 BTU | 0.0029 kWh |
| 20 BTU | 0.0059 kWh |
| 25 BTU | 0.0073 kWh |
| 50 BTU | 0.0147 kWh |
| 100 BTU | 0.0293 kWh |
| 1,000 BTU | 0.2931 kWh |
| 3,412 BTU | 1 kWh |
Plain-English guide
Terms & how it works
Confused by a field? Read the short definitions here while you use the tool.
BTU
The “BTU” value used in this tool’s formula. Adjust it to see results update live.
kWh = BTU ÷ 3,412.14 (IT calorie BTU).
US furnaces and AC still speak BTU. Electricity speaks kWh. Divide BTU by 3,412. 12,000 BTU/h is a “1 ton” of cooling and 3.52 kW if it ran an hour — note the /h: that is power. This field is energy (BTU, not BTU/h).
How this calculator works
US furnaces and AC still speak BTU. Electricity speaks kWh. Divide BTU by 3,412. 12,000 BTU/h is a “1 ton” of cooling and 3.52 kW if it ran an hour — note the /h: that is power. This field is energy (BTU, not BTU/h). kWh = BTU ÷ 3,412.14 (IT calorie BTU). Scenario: 3,412 BTU → 1 kWh. 100,000 BTU furnace pulse → 29.3 kWh of heat energy.
kWh = BTU ÷ 3,412.14 (IT calorie BTU).
Scenario: 3,412 BTU → 1 kWh. 100,000 BTU furnace pulse → 29.3 kWh of heat energy.
When to use this BTU to kWh
Common use cases
- US furnaces and AC still speak BTU. Electricity speaks kWh. Divide BTU by 3,412. 12,000 BTU/h is a “1 ton” of cooling and 3.52 kW if it ran an hour — note the /h: that is power. This field is energy (BTU, not BTU/h).
- Sanity-check with this scenario: 3,412 BTU → 1 kWh. 100,000 BTU furnace pulse → 29.3 kWh of heat energy.
- The relationship is: kWh = BTU ÷ 3,412.14 (IT calorie BTU).
Localized examples
- Unit Converters: the example on this page uses the same formula as the widget.
What you get
- Fields: BTU
- kWh = BTU ÷ 3,412.14 (IT calorie BTU).
- Scenario on the page: 3,412 BTU → 1 kWh. 100,000 BTU furnace pulse → 29.3 kWh of heat energy.
How to Convert BTU to kWh
- 1Enter BTU. Use the values you have, not a catalog average, unless that is all you know.
- 2kWh = BTU ÷ 3,412.14 (IT calorie BTU).
- 3Scenario: 3,412 BTU → 1 kWh. 100,000 BTU furnace pulse → 29.3 kWh of heat energy.
- 4Check which dictionary the other person is using — US or UK, decimal or 1,024 — then trust the number.
Governing formula
kWh = BTU ÷ 3,412.14 (IT calorie BTU).
3,412 BTU → 1 kWh. 100,000 BTU furnace pulse → 29.3 kWh of heat energy.
3,412 BTU → 1 kWh. 100,000 BTU furnace pulse → 29.3 kWh of heat energy.
Variable definitions
- value
BTU
The “BTU” field. Default 3412; typical range 0–1000000000.
- The conversion (kWh = BTU ÷ 3,412.14 (IT calorie BTU).) does not pick US vs UK gallons, SI vs binary megabytes, or Mach at altitude for you. Read the footnote on the page.
- Nothing here is uploaded for the calculation itself.
Frequently Asked Questions
BTU/h is power (like watts). Convert hours of runtime to energy first.
Related calculators
Unit Converters
- SI Joule Prefix ConverterFood calories (thermochemical) are 4.184 J. Nutrition labels in kJ. Explosives data in MJ and GJ. Same joule. kWh and BTU are other dictionaries with their own pages.
- Appliance Running CostCost = watts × hours / 1000 × $/kWh. A 1,500 W space heater for 4 hours at $0.16/kWh is $0.96. The supply rate on the bill is the one that matters, not a national average.
- Celsius Heat Units to JoulesA Celsius heat unit is the heat to raise 1 pound of water by 1 °C — about 1,899 J. Old HVAC and process papers use CHU. If you expected BTU, you are on the Fahrenheit twin (1 lb × 1 °F). Do not mix them in a load calc.
- kWh to MegajoulesYour electric bill is in kWh. Physics problems want joules. 1 kWh = 3.6 MJ exactly (1,000 W × 3,600 s). A 30 kWh EV pack is 108 MJ. That is energy stored, not how far you will get in the rain.
- Solar Panel Daily kWhkWh/day ≈ (array W / 1000) × peak sun hours. A 400 W panel in 4.5 PSH is 1.8 kWh before dirt, heat, and inverter loss (often 0.75–0.85). NREL sun-hour maps beat a guess.
- Watts and Hours to kWhkWh = watts × hours / 1,000. A 60 W bulb for 5 hours is 0.3 kWh. Nameplate watts on a fridge are not the same as the compressor’s duty cycle.
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Reviews & Ratings
See what others think about this tool, then leave your own rating to help improve CalculioHub.
4.8
out of 5.0
4 reviews
Daniel R.
Feb 28, 2026
Very usable on mobile. Would love a save/export option later, but the math feels solid.
Priya S.
Feb 3, 2026
The FAQ section answered my questions before I even had to search. Smooth dark mode too.
Marcus L.
Jan 19, 2026
Simple inputs, clear outputs. This replaced three bookmarks I used to juggle.
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