Gigajoule to BTU (IT) Converter

Energy Converter

27 units available

Decimals:

From

To

947,817.120313

1 GJ = 947,817.120313 BTU (IT)

Formula:

BTU (IT) = GJ × 947,817.1203133172

With your value: 1 GJ = 947,817.12031332 BTU (IT)

How big is that?

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

Heartbeat (1/1.0e+9 your value)1.00e-9 GJ

AA battery charge (1/1.0e+5 your value)0.0000100 GJ

Slice of bread (1/3.6e+3 your value)0.000280 GJ

Daily food intake (1/1.2e+2 your value)0.00840 GJ

Litre of petrol (1/29 your value)0.0342 GJ

Your value1.00 GJ

Other Gigajoule to BTU (IT) conversions

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

Gigajoule to BTU (IT) Conversion Table

Gigajoule (GJ)	BTU (IT) (BTU (IT))
0.5	473,908.560157
1	947,817.120313
2	1,895,634.240627
5	4,739,085.601567
10	9,478,171.203133
15	14,217,256.8047
20	18,956,342.406266
25	23,695,428.007833
50	47,390,856.015666
100	94,781,712.031332
250	236,954,280.078329
500	473,908,560.156659
1000	947,817,120.313317

BTU (IT) to Gigajoule Conversion Table

BTU (IT) (BTU (IT))	Gigajoule (GJ)
0.5	5.275279e-7
1	1.055056e-6
2	2.110112e-6
5	5.275279e-6
10	1.055056e-5
15	1.582584e-5
20	2.110112e-5
25	2.637640e-5
50	5.275279e-5
100	0.000106
250	0.000264
500	0.000528
1000	0.001055

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.

Gigajoule (GJ)

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 Gigajoule to BTU (IT)

To convert from Gigajoule (GJ) to BTU (IT) (BTU (IT)), multiply the value by 947,817.1203133172.

Formula: BTU (IT) = GJ × 947,817.1203133172

Reverse: GJ = BTU (IT) × 0.0000010551

Step-by-Step Example

Start with your value in Gigajoule. For example: 5 GJ
Multiply by the conversion factor: 5 x 947,817.1203133172
The result is: 4,739,085.601567 BTU (IT)

About Gigajoule

The gigajoule (GJ) is a unit of energy and work. One gigajoule equals 1.000000 × 10^+9 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 Gigajoule?

There are exactly 947,817.1203133172 BTU (IT) in 1 Gigajoule. This means the conversion factor from Gigajoule to BTU (IT) is 947,817.1203133172.

What is the formula to convert Gigajoule to BTU (IT)?

The formula to convert Gigajoule to BTU (IT) is: BTU (IT) = GJ × 947,817.1203133172. For example, to convert 10 Gigajoule to BTU (IT), you would multiply 10 by 947,817.1203133172.

What is a Gigajoule?