Therm to Kiloton of TNT Converter

Energy Converter

27 units available

Decimals:

From

To

2.521644e-5

1 thm = 2.521644e-5 ktTNT

Formula:

ktTNT = thm × 0.0000252164

With your value: 1 thm = 2.521644e-5 ktTNT

How big is that?

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

Heartbeat (1/1.1e+8 your value)9.48e-9 thm

AA battery charge (1/1.1e+4 your value)0.0000948 thm

Slice of bread (1/3.8e+2 your value)0.00265 thm

Daily food intake (1/13 your value)0.0796 thm

Litre of petrol (1/3.1 your value)0.324 thm

Your value1.00 thm

Other Therm to Kiloton of TNT conversions

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

Therm to Kiloton of TNT Conversion Table

Therm (thm)	Kiloton of TNT (ktTNT)
0.5	1.260822e-5
1	2.521644e-5
2	5.043288e-5
5	0.000126
10	0.000252
15	0.000378
20	0.000504
25	0.00063
50	0.001261
100	0.002522
250	0.006304
500	0.012608
1000	0.025216

Kiloton of TNT to Therm Conversion Table

Kiloton of TNT (ktTNT)	Therm (thm)
0.5	19,828.334157
1	39,656.668314
2	79,313.336628
5	198,283.34157
10	396,566.683139
15	594,850.024709
20	793,133.366278
25	991,416.707848
50	1,982,833.415695
100	3,965,666.831391
250	9,914,167.078477
500	19,828,334.156955
1000	39,656,668.313909

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.

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

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 Therm to Kiloton of TNT

To convert from Therm (thm) to Kiloton of TNT (ktTNT), multiply the value by 2.521644e-5.

Formula: ktTNT = thm × 0.0000252164

Reverse: thm = ktTNT × 39,656.6683139092

Step-by-Step Example

Start with your value in Therm. For example: 5 thm
Multiply by the conversion factor: 5 x 2.521644e-5
The result is: 0.000126 ktTNT

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.

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 Therm?

There are exactly 2.521644e-5 Kiloton of TNT in 1 Therm. This means the conversion factor from Therm to Kiloton of TNT is 2.521644e-5.

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

The formula to convert Therm to Kiloton of TNT is: ktTNT = thm × 0.0000252164. For example, to convert 10 Therm to Kiloton of TNT, you would multiply 10 by 2.521644e-5.

What is a Therm?