BTU (th) to Electron Volt Converter

Energy Converter

27 units available

Decimals:

From

To

6.580735e+21

1 BTU = 6.580735e+21 eV

Formula:

eV = BTU × 6.580735e+21

With your value: 1 BTU = 6.580735e+21 eV

How big is that?

Everyday references on a logarithmic scale, all expressed in btu (th) so you can sanity-check the result.

Heartbeat (1/1.1e+3 your value)0.000948 BTU

Your value1.00 BTU

AA battery charge (9.5× your value)9.48 BTU

Slice of bread (2.7e+2× your value)266 BTU

Daily food intake (8.0e+3× your value)7.97e+3 BTU

Litre of petrol (3.2e+4× your value)3.24e+4 BTU

Other BTU (th) to Electron Volt conversions

2 BTU to eV 3 BTU to eV 4 BTU to eV 5 BTU to eV 6 BTU to eV 7 BTU to eV 8 BTU to eV

BTU (th) to Electron Volt Conversion Table

BTU (th) (BTU)	Electron Volt (eV)
0.5	3.290368e+21
1	6.580735e+21
2	1.316147e+22
5	3.290368e+22
10	6.580735e+22
15	9.871103e+22
20	1.316147e+23
25	1.645184e+23
50	3.290368e+23
100	6.580735e+23
250	1.645184e+24
500	3.290368e+24
1000	6.580735e+24

Electron Volt to BTU (th) Conversion Table

Electron Volt (eV)	BTU (th) (BTU)
0.5	7.597935e-23
1	1.519587e-22
2	3.039174e-22
5	7.597935e-22
10	1.519587e-21
15	2.279381e-21
20	3.039174e-21
25	3.798968e-21
50	7.597935e-21
100	1.519587e-20
250	3.798968e-20
500	7.597935e-20
1000	1.519587e-19

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

BTU (th) (BTU)

Energy

Exact conversion

The International Table BTU is exactly 1055.055 852 62 J.

Thermochemical and 39 °F BTU definitions differ by up to 0.2 %.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

Electron Volt (eV)

Energy

Exact conversion

1 eV = 1.602 176 634 × 10⁻¹⁹ J exactly, since the elementary charge is now fixed.

Source: CODATA Internationally Recommended Values of the Fundamental Physical Constants (2022 adjustment)

CODATA / NIST · Reviewed 2026-07-01

How to Convert BTU (th) to Electron Volt

To convert from BTU (th) (BTU) to Electron Volt (eV), multiply the value by 6.580735e+21.

Formula: eV = BTU × 6.580735e+21

Reverse: BTU = eV × 1.519587e-22

Step-by-Step Example

Start with your value in BTU (th). For example: 5 BTU
Multiply by the conversion factor: 5 x 6.580735e+21
The result is: 3.290368e+22 eV

About BTU (th)

The btu (th) (BTU) is a unit of energy and work. One btu (th) equals 1054.35 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: energy calculations, engineering and science, education.

About Electron Volt

The electron volt (eV) is a unit of energy and work. One electron volt equals 1.602177 × 10^-19 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: energy calculations, engineering and science, education.

Frequently Asked Questions

How many Electron Volt are in 1 BTU (th)?

There are exactly 6.580735e+21 Electron Volt in 1 BTU (th). This means the conversion factor from BTU (th) to Electron Volt is 6.580735e+21.

What is the formula to convert BTU (th) to Electron Volt?

The formula to convert BTU (th) to Electron Volt is: eV = BTU × 6.580735e+21. For example, to convert 10 BTU (th) to Electron Volt, you would multiply 10 by 6.580735e+21.

What is a BTU (th)?