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
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).
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).
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.
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). Example: 3,412 BTU → 1 kWh. 100,000 BTU furnace pulse → 29.3 kWh of heat energy.
kWh = BTU ÷ 3,412.14 (IT calorie BTU).
Example: 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 case: 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).
- Example 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 Step-by-Step
- 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).
- 3Worked case: 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.
Example: set BTU = 3,412, then read the result.
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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