Convert Kilowatt-hours (kWh) to Btu
1 kilowatt-hour equals 3412.14 Btu.
Formula:
Btu = kWh × 3412.14
Kilowatt-hour to Btu Converter
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How to Convert Kilowatt-hour to Btu
1 kilowatt-hour = 3412.14 Btu
Btu = Kilowatt-hour × 3412.14
Example: 1 kWh × 3412.14 = 3412.14 Btu
Reverse Conversion
To convert Btu back to kilowatt-hours:
- Remember, 1 Btu equals 0.000293071 kilowatt-hours.
- To convert 3412.14 Btu to kWh, multiply
3412.14 x 0.000293071, resulting in1 kWh.
Common Kilowatt-hour to Btu Conversions
| Kilowatt-hour | Btu | Actions |
|---|---|---|
| 1 kilowatt-hour | 3412.14 Btu | |
| 2 kilowatt-hours | 6824.28 Btu | |
| 5 kilowatt-hours | 17060.7 Btu |
| Kilowatt-hour | Btu | Actions |
|---|---|---|
| 10 kilowatt-hours | 34121.4 Btu | |
| 50 kilowatt-hours | 170607 Btu | |
| 100 kilowatt-hours | 341214 Btu |
Kilowatt-hours to Btu Conversion Table
Reference table with common kilowatt-hours to btu conversions. All values calculated with high precision.
Kilowatt-hours to Btu Table
0.0001 to 12
Kilowatt-hours to Btu Table
1 to 100000
Btu to Kilowatt-hours Table
1 to 5000
Btu to Kilowatt-hours Table
10000 to 1 × 109
Definition of Kilowatt-hour
- Definition
- Energy equal to one kilowatt of power sustained for one hour.
- Exact factor
- Exact: 1 kWh = 3.6 × 10⁶ J
- Sources
- NIST SP 811
Definition of Btu
- Definition
- British thermal unit (IT) — legacy heat unit based on heating water.
- Reference factor
- 1 Btu (IT) = 1055.056 J
- Sources
- EIA — Btu
About the Kilowatt-hour
Facts & Uses
- Primary electricity billing unit for homes, businesses, and EV charging; measured by smart meters and data loggers.
- 1 kWh = 3.6 MJ (exact) ≈ 3412 Btu; also ≈ 1.341 hp·h for mechanical comparisons.
- Used across energy analytics: load profiles, time-of-use (TOU) tariffs, net metering, and demand response programs.
- Common for battery pack capacity (EVs, storage), PV generation summaries, and building energy dashboards.
Curiosities
- Don’t confuse kW (power, rate) with kWh (energy, quantity); demand charges often bill peak kW, not kWh.
- Historic UK term Board of Trade unit equals exactly 1 kWh.
- Appliance energy labels estimate annual kWh consumption to compare efficiency across models.
- In microgrids and off-grid systems, round-trip efficiency determines how many kWh stored are later delivered.
Sources
About the Btu
Facts & Uses
- Core unit in U.S. HVAC, combustion, and fuel heat content tables; equipment capacity is typically rated in Btu/h (power) for load calculations and furnace/boiler sizing.
- Common billing/market units: therm (100,000 Btu), MMBtu (106 Btu), and MBH (103 Btu/h) in gas utilities, pipelines, and energy trading.
- Efficiency metrics convert directly: 1 kWh ≈ 3412 Btu; SEER and HSPF use Btu/Wh; AFUE/boiler efficiency often reported against Btu input.
- Reference conversion anchor for engineering: 1 Btu (IT) ≈ 1055.06 J ≈ 0.000293071 kWh; useful for energy balances and heat loss/gain estimates.
Curiosities
- Multiple historical definitions exist (e.g., IT Btu, mean Btu); modern U.S. practice typically standardizes on IT Btu.
- Ton of refrigeration is a power unit equal to 12,000 Btu/h (not energy) and underpins A/C sizing conventions.
- Notation can confuse: industry often uses MMBtu for million Btu (Roman numeral convention), while MBtu sometimes means thousand Btu.
- Building analytics in the U.S. may cite energy use intensity (EUI) as Btu/ft²·yr for benchmarking envelopes and systems.
Sources
Frequently Asked Questions
How many Btu are in one kilowatt-hour?
One kilowatt-hour equals 3412.14 Btu. To convert, multiply the kilowatt-hour value by 3412.14. For the reverse, divide the Btu value by 3412.14 (or multiply by 0.000293071).
What is 1 kilowatt-hour in Btu?
1 kilowatt-hour = 3412.1 Btu. This is one of the most commonly searched conversions for this pair.
How precise is the kilowatt-hour-to-Btu conversion?
The factor 3412.14 is accurate to 6 significant figures, derived from international measurement standards. Our calculator uses full precision internally.
Looking for the reverse? Convert Btu to Kilowatt-hour
Related Energy Converters
Explore other energy conversion tools:
Related in other categories:
- Watts to Kilowatts — kW measures power; kWh measures energy (power × time)
Conversion factors verified against NIST, BIPM, ISO 80000-4
1 cal_IT = 4.1868 J by definition (BIPM/ITS-90).
Last reviewed: April 2026
