Gigajoule to Ton of TNT Converter

Energy Converter

27 units available

Decimals:

From

To

0.239006

1 GJ = 0.239006 tTNT

Formula:

tTNT = GJ × 0.2390057361

With your value: 1 GJ = 0.23900574 tTNT

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 Ton of TNT conversions

2 GJ to tTNT 3 GJ to tTNT 4 GJ to tTNT 5 GJ to tTNT 6 GJ to tTNT 7 GJ to tTNT 8 GJ to tTNT

Gigajoule to Ton of TNT Conversion Table

Gigajoule (GJ)	Ton of TNT (tTNT)
0.5	0.119503
1	0.239006
2	0.478011
5	1.195029
10	2.390057
15	3.585086
20	4.780115
25	5.975143
50	11.950287
100	23.900574
250	59.751434
500	119.502868
1000	239.005736

Ton of TNT to Gigajoule Conversion Table

Ton of TNT (tTNT)	Gigajoule (GJ)
0.5	2.092
1	4.184
2	8.368
5	20.92
10	41.84
15	62.76
20	83.68
25	104.6
50	209.2
100	418.4
250	1,046
500	2,092
1000	4,184

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

Ton of TNT (tTNT)

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 Ton of TNT

To convert from Gigajoule (GJ) to Ton of TNT (tTNT), multiply the value by 0.2390057361.

Formula: tTNT = GJ × 0.2390057361

Reverse: GJ = tTNT × 4.184

Step-by-Step Example

Start with your value in Gigajoule. For example: 5 GJ
Multiply by the conversion factor: 5 x 0.2390057361
The result is: 1.195029 tTNT

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 Ton of TNT

The ton of tnt (tTNT) is a unit of energy and work. One ton of tnt equals 4.184000 × 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.

Frequently Asked Questions

How many Ton of TNT are in 1 Gigajoule?

There are exactly 0.2390057361 Ton of TNT in 1 Gigajoule. This means the conversion factor from Gigajoule to Ton of TNT is 0.2390057361.

What is the formula to convert Gigajoule to Ton of TNT?

The formula to convert Gigajoule to Ton of TNT is: tTNT = GJ × 0.2390057361. For example, to convert 10 Gigajoule to Ton of TNT, you would multiply 10 by 0.2390057361.

What is a Gigajoule?