British Thermal Unit to Kilowatt-hour (thermal) Converter
Energy · unit-converter
Convert British Thermal Unit to Kilowatt-hour (thermal) with fixed input and output units, a step-by-step formula line, and reference tables. Factors are joule-based; food energy uses thermochemical calories. The full Energy Converter also includes MMBtu, toe, thermal kWh, and MeV/GeV.
Calculator
From: British Thermal Unit (btu)
To: Kilowatt-hour (thermal) (kwh_th)
About British Thermal Unit
The British thermal unit used here is the IT BTU: ≈ 1,055.056 J. It appears in HVAC, heating equipment, and US engineering data.
About Kilowatt-hour (thermal)
Kilowatt-hour (thermal) is shown as a thermal-energy label and uses the same joule definition as kWh (3.6 MJ).
How to convert british thermal units to kilowatt-hour (thermal)
1 british thermal unit is equal to 0.00029307107017 kilowatt-hour (thermal) when both are expressed in joule-equivalents:
1 btu = (1,055.05585262 J ÷ 3,600,000 J) kwh_th = 0.00029307107017 kwh_th
Each british thermal unit is defined as 1,055.05585262 J and each kilowatt-hour (thermal) as 3,600,000 J in this tool, so one btu equals 1,055.05585262 ÷ 3,600,000 kwh_th = 0.00029307107017 kwh_th.
Let d(btu) be the numeric amount in British Thermal Unit (btu), and d(kwh_th) the amount in Kilowatt-hour (thermal) (kwh_th). Then:
d(kwh_th) = d(btu) × (1,055.05585262 / 3,600,000)
Equivalently, divide by how many btu fit into one kwh_th (joules per kwh_th divided by joules per btu):
d(kwh_th) = d(btu) ÷ 3412.14163312794199
Or: kilowatt-hour (thermal) = british thermal unit ÷ 3412.14163312794199
Examples
Example #1: Convert 1 btu to kilowatt-hour (thermal)
1 btu = 1 btu × (1,055.05585262/3,600,000) kwh_th = 0.0002930711 kwh_th
1 btu = 1 btu ÷ 3412.14163312794199 = 0.0002930711 kwh_th
Example #2: Convert 10 btu to kilowatt-hour (thermal)
10 btu = 10 btu × (1,055.05585262/3,600,000) kwh_th = 0.0029307107 kwh_th
10 btu = 10 btu ÷ 3412.14163312794199 = 0.0029307107 kwh_th
Summary
To convert British Thermal Unit to Kilowatt-hour (thermal), multiply the value in btu by the ratio of joules per btu divided by joules per kwh_th. Equivalently: value_kwh_th = value_btu × (1055.05585262 / 3600000). Numerically, 1 btu equals 0.0002930710701722222 kwh_th.
Relationship context
You are converting between US / imperial engineering units (BTU, therm, ft·lb) (British Thermal Units) and electrical energy (watt-hours) (Kilowatt-hour (thermal)). All values are mapped through joules first. The numeric factor is 2.930711e-4.
Conversion tables
| British Thermal Unit (btu) | Kilowatt-hour (thermal) (kwh_th) |
|---|---|
| 0.1 | 0.0000293071 |
| 1 | 0.0002930711 |
| 2 | 0.0005861421 |
| 3 | 0.0008792132 |
| 4 | 0.0011722843 |
| 5 | 0.0014653554 |
| 6 | 0.0017584264 |
| 7 | 0.0020514975 |
| 8 | 0.0023445686 |
| 9 | 0.0026376396 |
| British Thermal Unit (btu) | Kilowatt-hour (thermal) (kwh_th) |
|---|---|
| 10 | 0.0029307107 |
| 20 | 0.0058614214 |
| 30 | 0.0087921321 |
| 40 | 0.0117228428 |
| 50 | 0.0146535535 |
| 60 | 0.0175842642 |
| 70 | 0.0205149749 |
| 80 | 0.0234456856 |
| 90 | 0.0263763963 |
| 100 | 0.029307107 |