British Thermal Unit to Electronvolt Converter
Energy · unit-converter
Convert British Thermal Unit to Electronvolt 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: Electronvolt (ev)
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 Electronvolt
The electronvolt is the energy change of one elementary charge across 1 V: 1 eV ≈ 1.602176634×10⁻¹⁹ J (exact by SI definition). Used in particle physics and chemistry.
How to convert british thermal units to electronvolts
1 british thermal unit is equal to 6.58514068e+21 electronvolt when both are expressed in joule-equivalents:
1 btu = (1,055.05585262 J ÷ 1.602176634e-19 J) ev = 6.58514068e+21 ev
Each british thermal unit is defined as 1,055.05585262 J and each electronvolt as 1.602176634e-19 J in this tool, so one btu equals 1,055.05585262 ÷ 1.602176634e-19 ev = 6.58514068e+21 ev.
Let d(btu) be the numeric amount in British Thermal Unit (btu), and d(ev) the amount in Electronvolt (ev). Then:
d(ev) = d(btu) × (1,055.05585262 / 1.602176634e-19)
Equivalently, divide by how many btu fit into one ev (joules per ev divided by joules per btu):
d(ev) = d(btu) ÷ 1.51857044e-22
Or: electronvolt = british thermal unit ÷ 1.51857044e-22
Examples
Example #1: Convert 1 btu to electronvolt
1 btu = 1 btu × (1,055.05585262/1.602176634e-19) ev = 6.58514067819e+21 ev
1 btu = 1 btu ÷ 1.51857044e-22 = 6.58514067819e+21 ev
Example #2: Convert 10 btu to electronvolt
10 btu = 10 btu × (1,055.05585262/1.602176634e-19) ev = 6.58514067819e+22 ev
10 btu = 10 btu ÷ 1.51857044e-22 = 6.58514067819e+22 ev
Summary
To convert British Thermal Unit to Electronvolt, multiply the value in btu by the ratio of joules per btu divided by joules per ev. Equivalently: value_ev = value_btu × (1055.05585262 / 1.602176634e-19). Numerically, 1 btu equals 6.585140678190667e+21 ev.
Relationship context
You are converting between US / imperial engineering units (BTU, therm, ft·lb) (British Thermal Units) and atomic-scale energy (electronvolts) (Electronvolts). All values are mapped through joules first. The numeric factor is 6.585141e+21.
Conversion tables
| British Thermal Unit (btu) | Electronvolt (ev) |
|---|---|
| 0.1 | 658,514,067,818,999,971,840 |
| 1 | 6.58514067819e+21 |
| 2 | 1.31702813564e+22 |
| 3 | 1.97554220346e+22 |
| 4 | 2.63405627128e+22 |
| 5 | 3.2925703391e+22 |
| 6 | 3.95108440691e+22 |
| 7 | 4.60959847473e+22 |
| 8 | 5.26811254255e+22 |
| 9 | 5.92662661037e+22 |
| British Thermal Unit (btu) | Electronvolt (ev) |
|---|---|
| 10 | 6.58514067819e+22 |
| 20 | 1.31702813564e+23 |
| 30 | 1.97554220346e+23 |
| 40 | 2.63405627128e+23 |
| 50 | 3.2925703391e+23 |
| 60 | 3.95108440691e+23 |
| 70 | 4.60959847473e+23 |
| 80 | 5.26811254255e+23 |
| 90 | 5.92662661037e+23 |
| 100 | 6.58514067819e+23 |