BTU (IT) to Megaton of TNT Converter

Energy Converter

27 units available

Decimals:

From

To

2.521644e-13

1 BTU (IT) = 2.521644e-13 MtTNT

Formula:

MtTNT = BTU (IT) × 2.521644e-13

With your value: 1 BTU (IT) = 2.521644e-13 MtTNT

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 Megaton of TNT conversions

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

BTU (IT) to Megaton of TNT Conversion Table

BTU (IT) (BTU (IT))	Megaton of TNT (MtTNT)
0.5	1.260822e-13
1	2.521644e-13
2	5.043288e-13
5	1.260822e-12
10	2.521644e-12
15	3.782466e-12
20	5.043288e-12
25	6.304110e-12
50	1.260822e-11
100	2.521644e-11
250	6.304110e-11
500	1.260822e-10
1000	2.521644e-10

Megaton of TNT to BTU (IT) Conversion Table

Megaton of TNT (MtTNT)	BTU (IT) (BTU (IT))
0.5	1.982833e+12
1	3.965667e+12
2	7.931334e+12
5	1.982833e+13
10	3.965667e+13
15	5.948500e+13
20	7.931334e+13
25	9.914167e+13
50	1.982833e+14
100	3.965667e+14
250	9.914167e+14
500	1.982833e+15
1000	3.965667e+15

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

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 BTU (IT) to Megaton of TNT

To convert from BTU (IT) (BTU (IT)) to Megaton of TNT (MtTNT), multiply the value by 2.521644e-13.

Formula: MtTNT = BTU (IT) × 2.521644e-13

Reverse: BTU (IT) = MtTNT × 3.965667e+12

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-13
The result is: 1.260822e-12 MtTNT

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 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 BTU (IT)?

There are exactly 2.521644e-13 Megaton of TNT in 1 BTU (IT). This means the conversion factor from BTU (IT) to Megaton of TNT is 2.521644e-13.

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

The formula to convert BTU (IT) to Megaton of TNT is: MtTNT = BTU (IT) × 2.521644e-13. For example, to convert 10 BTU (IT) to Megaton of TNT, you would multiply 10 by 2.521644e-13.

What is a BTU (IT)?