Kiloton of TNT to BTU (th) Converter

Energy Converter

27 units available

Decimals:

From

To

3,968,321,714.800589

1 ktTNT = 3,968,321,714.800589 BTU

Formula:

BTU = ktTNT × 3.968322e+9

With your value: 1 ktTNT = 3,968,321,714.8005886 BTU

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 BTU (th) conversions

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

Kiloton of TNT to BTU (th) Conversion Table

Kiloton of TNT (ktTNT)	BTU (th) (BTU)
0.5	1,984,160,857.400294
1	3,968,321,714.800589
2	7,936,643,429.601177
5	19,841,608,574.00294
10	39,683,217,148.00588
15	59,524,825,722.00883
20	79,366,434,296.01176
25	99,208,042,870.01471
50	198,416,085,740.02942
100	396,832,171,480.05884
250	992,080,428,700.1471
500	1.984161e+12
1000	3.968322e+12

BTU (th) to Kiloton of TNT Conversion Table

BTU (th) (BTU)	Kiloton of TNT (ktTNT)
0.5	1.259978e-10
1	2.519957e-10
2	5.039914e-10
5	1.259978e-9
10	2.519957e-9
15	3.779935e-9
20	5.039914e-9
25	6.299892e-9
50	1.259978e-8
100	2.519957e-8
250	6.299892e-8
500	1.259978e-7
1000	2.519957e-7

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

BTU (th) (BTU)

Energy

Exact conversion

The International Table BTU is exactly 1055.055 852 62 J.

Thermochemical and 39 °F BTU definitions differ by up to 0.2 %.

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 BTU (th)

To convert from Kiloton of TNT (ktTNT) to BTU (th) (BTU), multiply the value by 3,968,321,714.8005886.

Formula: BTU = ktTNT × 3.968322e+9

Reverse: ktTNT = BTU × 2.519957e-10

Step-by-Step Example

Start with your value in Kiloton of TNT. For example: 5 ktTNT
Multiply by the conversion factor: 5 x 3,968,321,714.8005886
The result is: 19,841,608,574.00294 BTU

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 BTU (th)

The btu (th) (BTU) is a unit of energy and work. One btu (th) equals 1054.35 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 (th) are in 1 Kiloton of TNT?

There are exactly 3,968,321,714.8005886 BTU (th) in 1 Kiloton of TNT. This means the conversion factor from Kiloton of TNT to BTU (th) is 3,968,321,714.8005886.

What is the formula to convert Kiloton of TNT to BTU (th)?

The formula to convert Kiloton of TNT to BTU (th) is: BTU = ktTNT × 3.968322e+9. For example, to convert 10 Kiloton of TNT to BTU (th), you would multiply 10 by 3,968,321,714.8005886.

What is a Kiloton of TNT?