BTU (IT) to Kiloton of TNT Converter

Energy Converter

27 units available

Decimals:

From

To

2.521644e-10

1 BTU (IT) = 2.521644e-10 ktTNT

Formula:

ktTNT = BTU (IT) × 2.521644e-10

With your value: 1 BTU (IT) = 2.521644e-10 ktTNT

How big is that?

Everyday references on a logarithmic scale, all expressed in btu (it) so you can sanity-check the result.

Heartbeat (1/1.1e+3 your value)0.000948 BTU (IT)

Your value1.00 BTU (IT)

AA battery charge (9.5× your value)9.48 BTU (IT)

Slice of bread (2.7e+2× your value)265 BTU (IT)

Daily food intake (8.0e+3× your value)7.96e+3 BTU (IT)

Litre of petrol (3.2e+4× your value)3.24e+4 BTU (IT)

Other BTU (IT) to Kiloton of TNT conversions

2 BTU (IT) to ktTNT 3 BTU (IT) to ktTNT 4 BTU (IT) to ktTNT 5 BTU (IT) to ktTNT 6 BTU (IT) to ktTNT 7 BTU (IT) to ktTNT 8 BTU (IT) to ktTNT

BTU (IT) to Kiloton of TNT Conversion Table

BTU (IT) (BTU (IT))	Kiloton of TNT (ktTNT)
0.5	1.260822e-10
1	2.521644e-10
2	5.043288e-10
5	1.260822e-9
10	2.521644e-9
15	3.782466e-9
20	5.043288e-9
25	6.304110e-9
50	1.260822e-8
100	2.521644e-8
250	6.304110e-8
500	1.260822e-7
1000	2.521644e-7

Kiloton of TNT to BTU (IT) Conversion Table

Kiloton of TNT (ktTNT)	BTU (IT) (BTU (IT))
0.5	1,982,833,415.69546
1	3,965,666,831.390919
2	7,931,333,662.781838
5	19,828,334,156.954597
10	39,656,668,313.909195
15	59,485,002,470.863785
20	79,313,336,627.81839
25	99,141,670,784.77298
50	198,283,341,569.54596
100	396,566,683,139.0919
250	991,416,707,847.7297
500	1.982833e+12
1000	3.965667e+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.

BTU (IT) (BTU (IT))

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

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

How to Convert BTU (IT) to Kiloton of TNT

To convert from BTU (IT) (BTU (IT)) to Kiloton of TNT (ktTNT), multiply the value by 2.521644e-10.

Formula: ktTNT = BTU (IT) × 2.521644e-10

Reverse: BTU (IT) = ktTNT × 3.965667e+9

Step-by-Step Example

Start with your value in BTU (IT). For example: 5 BTU (IT)
Multiply by the conversion factor: 5 x 2.521644e-10
The result is: 1.260822e-9 ktTNT

About BTU (IT)

The btu (it) (BTU (IT)) is a unit of energy and work. One btu (it) equals 1055.055853 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 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.

Frequently Asked Questions

How many Kiloton of TNT are in 1 BTU (IT)?

There are exactly 2.521644e-10 Kiloton of TNT in 1 BTU (IT). This means the conversion factor from BTU (IT) to Kiloton of TNT is 2.521644e-10.

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

The formula to convert BTU (IT) to Kiloton of TNT is: ktTNT = BTU (IT) × 2.521644e-10. For example, to convert 10 BTU (IT) to Kiloton of TNT, you would multiply 10 by 2.521644e-10.

What is a BTU (IT)?