Watt-Hour to BTU (IT) Converter

Energy Converter

27 units available

Decimals:

From

To

3.412142

1 Wh = 3.412142 BTU (IT)

Formula:

BTU (IT) = Wh × 3.4121416331

With your value: 1 Wh = 3.41214163 BTU (IT)

How big is that?

Everyday references on a logarithmic scale, all expressed in watt-hour so you can sanity-check the result.

Heartbeat (1/3.6e+3 your value)0.000278 Wh

Your value1.00 Wh

AA battery charge (2.8× your value)2.78 Wh

Slice of bread (78× your value)77.8 Wh

Daily food intake (2.3e+3× your value)2.33e+3 Wh

Litre of petrol (9.5e+3× your value)9.50e+3 Wh

Other Watt-Hour to BTU (IT) conversions

2 Wh to BTU (IT)3 Wh to BTU (IT)4 Wh to BTU (IT)5 Wh to BTU (IT)6 Wh to BTU (IT)7 Wh to BTU (IT)8 Wh to BTU (IT)

Watt-Hour to BTU (IT) Conversion Table

Watt-Hour (Wh)	BTU (IT) (BTU (IT))
0.5	1.706071
1	3.412142
2	6.824283
5	17.060708
10	34.121416
15	51.182124
20	68.242833
25	85.303541
50	170.607082
100	341.214163
250	853.035408
500	1,706.070817
1000	3,412.141633

BTU (IT) to Watt-Hour Conversion Table

BTU (IT) (BTU (IT))	Watt-Hour (Wh)
0.5	0.146536
1	0.293071
2	0.586142
5	1.465355
10	2.930711
15	4.396066
20	5.861421
25	7.326777
50	14.653554
100	29.307107
250	73.267768
500	146.535535
1000	293.07107

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.

Watt-Hour (Wh)

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

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

BTU (IT) (BTU (IT))

Energy

Exact conversion

Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.

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

How to Convert Watt-Hour to BTU (IT)

To convert from Watt-Hour (Wh) to BTU (IT) (BTU (IT)), multiply the value by 3.4121416331.

Formula: BTU (IT) = Wh × 3.4121416331

Reverse: Wh = BTU (IT) × 0.2930710702

Step-by-Step Example

Start with your value in Watt-Hour. For example: 5 Wh
Multiply by the conversion factor: 5 x 3.4121416331
The result is: 17.060708 BTU (IT)

About Watt-Hour

The watt-hour (Wh) is a unit of energy and work. One watt-hour equals 3600 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 BTU (IT)

The btu (it) (BTU (IT)) is a unit of energy and work. One btu (it) equals 1055.055853 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 BTU (IT) are in 1 Watt-Hour?

There are exactly 3.4121416331 BTU (IT) in 1 Watt-Hour. This means the conversion factor from Watt-Hour to BTU (IT) is 3.4121416331.

What is the formula to convert Watt-Hour to BTU (IT)?

The formula to convert Watt-Hour to BTU (IT) is: BTU (IT) = Wh × 3.4121416331. For example, to convert 10 Watt-Hour to BTU (IT), you would multiply 10 by 3.4121416331.

What is a Watt-Hour?