Kiloton of TNT to Millijoule Converter

Energy Converter

27 units available

Decimals:

From

To

4.184000e+15

1 ktTNT = 4.184000e+15 mJ

Formula:

mJ = ktTNT × 4.184000e+15

With your value: 1 ktTNT = 4.184000e+15 mJ

How big is that?

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

Heartbeat (1/4.2e+12 your value)2.39e-13 ktTNT

AA battery charge (1/4.2e+8 your value)2.39e-9 ktTNT

Slice of bread (1/1.5e+7 your value)6.69e-8 ktTNT

Daily food intake (1/5.0e+5 your value)0.00000201 ktTNT

Litre of petrol (1/1.2e+5 your value)0.00000817 ktTNT

Your value1.00 ktTNT

Other Kiloton of TNT to Millijoule conversions

2 ktTNT to mJ 3 ktTNT to mJ 4 ktTNT to mJ 5 ktTNT to mJ 6 ktTNT to mJ 7 ktTNT to mJ 8 ktTNT to mJ

Kiloton of TNT to Millijoule Conversion Table

Kiloton of TNT (ktTNT)	Millijoule (mJ)
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

Millijoule to Kiloton of TNT Conversion Table

Millijoule (mJ)	Kiloton of TNT (ktTNT)
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

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.

Kiloton of TNT (ktTNT)

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

Millijoule (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

How to Convert Kiloton of TNT to Millijoule

To convert from Kiloton of TNT (ktTNT) to Millijoule (mJ), multiply the value by 4.184000e+15.

Formula: mJ = ktTNT × 4.184000e+15

Reverse: ktTNT = mJ × 2.390057e-16

Step-by-Step Example

Start with your value in Kiloton of TNT. For example: 5 ktTNT
Multiply by the conversion factor: 5 x 4.184000e+15
The result is: 2.092000e+16 mJ

About Kiloton of TNT

The kiloton of tnt (ktTNT) is a unit of energy and work. One kiloton of tnt equals 4.184000 × 10^+12 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 Millijoule

The millijoule (mJ) is a unit of energy and work. One millijoule equals 0.001 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 Millijoule are in 1 Kiloton of TNT?

There are exactly 4.184000e+15 Millijoule in 1 Kiloton of TNT. This means the conversion factor from Kiloton of TNT to Millijoule is 4.184000e+15.

What is the formula to convert Kiloton of TNT to Millijoule?

The formula to convert Kiloton of TNT to Millijoule is: mJ = ktTNT × 4.184000e+15. For example, to convert 10 Kiloton of TNT to Millijoule, you would multiply 10 by 4.184000e+15.

What is a Kiloton of TNT?