Megajoule to Megaton of TNT Converter

Energy Converter

27 units available

Decimals:

From

To

2.390057e-10

1 MJ = 2.390057e-10 MtTNT

Formula:

MtTNT = MJ × 2.390057e-10

With your value: 1 MJ = 2.390057e-10 MtTNT

How big is that?

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

Heartbeat (1/1.0e+6 your value)0.00000100 MJ

AA battery charge (1/1.0e+2 your value)0.0100 MJ

Slice of bread (1/3.6 your value)0.280 MJ

Your value1.00 MJ

Daily food intake (8.4× your value)8.40 MJ

Litre of petrol (34× your value)34.2 MJ

Other Megajoule to Megaton of TNT conversions

2 MJ to MtTNT 3 MJ to MtTNT 4 MJ to MtTNT 5 MJ to MtTNT 6 MJ to MtTNT 7 MJ to MtTNT 8 MJ to MtTNT

Megajoule to Megaton of TNT Conversion Table

Megajoule (MJ)	Megaton of TNT (MtTNT)
0.5	1.195029e-10
1	2.390057e-10
2	4.780115e-10
5	1.195029e-9
10	2.390057e-9
15	3.585086e-9
20	4.780115e-9
25	5.975143e-9
50	1.195029e-8
100	2.390057e-8
250	5.975143e-8
500	1.195029e-7
1000	2.390057e-7

Megaton of TNT to Megajoule Conversion Table

Megaton of TNT (MtTNT)	Megajoule (MJ)
0.5	2,092,000,000
1	4,184,000,000
2	8,368,000,000
5	20,920,000,000
10	41,840,000,000
15	62,760,000,000
20	83,680,000,000
25	104,600,000,000
50	209,200,000,000
100	418,400,000,000
250	1.046000e+12
500	2.092000e+12
1000	4.184000e+12

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.

Megajoule (MJ)

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

Megaton of TNT (MtTNT)

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 Megajoule to Megaton of TNT

To convert from Megajoule (MJ) to Megaton of TNT (MtTNT), multiply the value by 2.390057e-10.

Formula: MtTNT = MJ × 2.390057e-10

Reverse: MJ = MtTNT × 4.184000e+9

Step-by-Step Example

Start with your value in Megajoule. For example: 5 MJ
Multiply by the conversion factor: 5 x 2.390057e-10
The result is: 1.195029e-9 MtTNT

About Megajoule

The megajoule (MJ) is a unit of energy and work. One megajoule equals 1.000000 × 10^+6 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 Megaton of TNT

The megaton of tnt (MtTNT) is a unit of energy and work. One megaton of tnt equals 4.184000 × 10^+15 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 Megaton of TNT are in 1 Megajoule?

There are exactly 2.390057e-10 Megaton of TNT in 1 Megajoule. This means the conversion factor from Megajoule to Megaton of TNT is 2.390057e-10.

What is the formula to convert Megajoule to Megaton of TNT?

The formula to convert Megajoule to Megaton of TNT is: MtTNT = MJ × 2.390057e-10. For example, to convert 10 Megajoule to Megaton of TNT, you would multiply 10 by 2.390057e-10.

What is a Megajoule?