Kiloton of TNT to Therm Converter

Energy Converter

27 units available

Decimals:

From

To

39,656.668314

1 ktTNT = 39,656.668314 thm

Formula:

thm = ktTNT × 39,656.6683139092

With your value: 1 ktTNT = 39,656.66831391 thm

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 Therm conversions

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

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

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

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

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 Kiloton of TNT to Therm

To convert from Kiloton of TNT (ktTNT) to Therm (thm), multiply the value by 39,656.6683139092.

Formula: thm = ktTNT × 39,656.6683139092

Reverse: ktTNT = thm × 0.0000252164

Step-by-Step Example

Start with your value in Kiloton of TNT. For example: 5 ktTNT
Multiply by the conversion factor: 5 x 39,656.6683139092
The result is: 198,283.34157 thm

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 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 Kiloton of TNT?

There are exactly 39,656.6683139092 Therm in 1 Kiloton of TNT. This means the conversion factor from Kiloton of TNT to Therm is 39,656.6683139092.

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

The formula to convert Kiloton of TNT to Therm is: thm = ktTNT × 39,656.6683139092. For example, to convert 10 Kiloton of TNT to Therm, you would multiply 10 by 39,656.6683139092.

What is a Kiloton of TNT?