Joule to Megaton of TNT Converter

Energy Converter

27 units available

Decimals:

From

To

2.390057e-16

1 J = 2.390057e-16 MtTNT

Formula:

MtTNT = J × 2.390057e-16

With your value: 1 J = 2.390057e-16 MtTNT

How big is that?

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

Heartbeat (1.0× your value)1.00 J

Your value1.00 J

AA battery charge (1.0e+4× your value)1.00e+4 J

Slice of bread (2.8e+5× your value)2.80e+5 J

Daily food intake (8.4e+6× your value)8.40e+6 J

Litre of petrol (3.4e+7× your value)3.42e+7 J

Other Joule to Megaton of TNT conversions

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

Joule to Megaton of TNT Conversion Table

Joule (J)	Megaton of TNT (MtTNT)
0.5	1.195029e-16
1	2.390057e-16
2	4.780115e-16
5	1.195029e-15
10	2.390057e-15
15	3.585086e-15
20	4.780115e-15
25	5.975143e-15
50	1.195029e-14
100	2.390057e-14
250	5.975143e-14
500	1.195029e-13
1000	2.390057e-13

Megaton of TNT to Joule Conversion Table

Megaton of TNT (MtTNT)	Joule (J)
0.5	2.092000e+15
1	4.184000e+15
2	8.368000e+15
5	2.092000e+16
10	4.184000e+16
15	6.276000e+16
20	8.368000e+16
25	1.046000e+17
50	2.092000e+17
100	4.184000e+17
250	1.046000e+18
500	2.092000e+18
1000	4.184000e+18

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.

Joule (J)

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 Joule to Megaton of TNT

To convert from Joule (J) to Megaton of TNT (MtTNT), multiply the value by 2.390057e-16.

Formula: MtTNT = J × 2.390057e-16

Reverse: J = MtTNT × 4.184000e+15

Step-by-Step Example

Start with your value in Joule. For example: 5 J
Multiply by the conversion factor: 5 x 2.390057e-16
The result is: 1.195029e-15 MtTNT

About Joule

The joule is the SI unit of energy. One joule equals the work done when a force of one newton moves an object one meter.

Common uses: physics, electrical engineering, chemistry.

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 Joule?

There are exactly 2.390057e-16 Megaton of TNT in 1 Joule. This means the conversion factor from Joule to Megaton of TNT is 2.390057e-16.

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

The formula to convert Joule to Megaton of TNT is: MtTNT = J × 2.390057e-16. For example, to convert 10 Joule to Megaton of TNT, you would multiply 10 by 2.390057e-16.

What is a Joule?