Megaton of TNT to Therm Converter

Energy Converter

27 units available

Decimals:

From

To

39,656,668.313909

1 MtTNT = 39,656,668.313909 thm

Formula:

thm = MtTNT × 39,656,668.313909195

With your value: 1 MtTNT = 39,656,668.3139092 thm

How big is that?

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

Heartbeat (1/4.2e+15 your value)2.39e-16 MtTNT

AA battery charge (1/4.2e+11 your value)2.39e-12 MtTNT

Slice of bread (1/1.5e+10 your value)6.69e-11 MtTNT

Daily food intake (1/5.0e+8 your value)2.01e-9 MtTNT

Litre of petrol (1/1.2e+8 your value)8.17e-9 MtTNT

Your value1.00 MtTNT

Other Megaton of TNT to Therm conversions

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

Megaton of TNT to Therm Conversion Table

Megaton of TNT (MtTNT)	Therm (thm)
0.5	19,828,334.156955
1	39,656,668.313909
2	79,313,336.627818
5	198,283,341.569546
10	396,566,683.139092
15	594,850,024.708638
20	793,133,366.278184
25	991,416,707.84773
50	1,982,833,415.69546
100	3,965,666,831.390919
250	9,914,167,078.477299
500	19,828,334,156.954597
1000	39,656,668,313.909195

Therm to Megaton of TNT Conversion Table

Therm (thm)	Megaton of TNT (MtTNT)
0.5	1.260822e-8
1	2.521644e-8
2	5.043288e-8
5	1.260822e-7
10	2.521644e-7
15	3.782466e-7
20	5.043288e-7
25	6.304110e-7
50	1.260822e-6
100	2.521644e-6
250	6.304110e-6
500	1.260822e-5
1000	2.521644e-5

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.

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

Therm (thm)

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 Megaton of TNT to Therm

To convert from Megaton of TNT (MtTNT) to Therm (thm), multiply the value by 39,656,668.313909195.

Formula: thm = MtTNT × 39,656,668.313909195

Reverse: MtTNT = thm × 2.521644e-8

Step-by-Step Example

Start with your value in Megaton of TNT. For example: 5 MtTNT
Multiply by the conversion factor: 5 x 39,656,668.313909195
The result is: 198,283,341.569546 thm

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.

About Therm

The therm (thm) is a unit of energy and work. One therm equals 1.055056 × 10^+8 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 Therm are in 1 Megaton of TNT?

There are exactly 39,656,668.313909195 Therm in 1 Megaton of TNT. This means the conversion factor from Megaton of TNT to Therm is 39,656,668.313909195.

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

The formula to convert Megaton of TNT to Therm is: thm = MtTNT × 39,656,668.313909195. For example, to convert 10 Megaton of TNT to Therm, you would multiply 10 by 39,656,668.313909195.

What is a Megaton of TNT?