Kiloton of TNT to Calorie (th) Converter

Energy Converter

27 units available

Decimals:

From

To

1.000000e+12

1 ktTNT = 1.000000e+12 cal

Formula:

cal = ktTNT × 1.000000e+12

With your value: 1 ktTNT = 1.000000e+12 cal

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 Calorie (th) conversions

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

Kiloton of TNT to Calorie (th) Conversion Table

Kiloton of TNT (ktTNT)	Calorie (th) (cal)
0.5	500,000,000,000
1	1.000000e+12
2	2.000000e+12
5	5.000000e+12
10	1.000000e+13
15	1.500000e+13
20	2.000000e+13
25	2.500000e+13
50	5.000000e+13
100	1.000000e+14
250	2.500000e+14
500	5.000000e+14
1000	1.000000e+15

Calorie (th) to Kiloton of TNT Conversion Table

Calorie (th) (cal)	Kiloton of TNT (ktTNT)
0.5	5.000000e-13
1	1.000000e-12
2	2.000000e-12
5	5.000000e-12
10	1.000000e-11
15	1.500000e-11
20	2.000000e-11
25	2.500000e-11
50	5.000000e-11
100	1.000000e-10
250	2.500000e-10
500	5.000000e-10
1000	1.000000e-9

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

Calorie (th) (cal)

Energy

Exact conversion

The thermochemical calorie is exactly 4.184 J.

The International Table calorie (4.1868 J) and the 15 °C calorie differ slightly.

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 Calorie (th)

To convert from Kiloton of TNT (ktTNT) to Calorie (th) (cal), multiply the value by 1.000000e+12.

Formula: cal = ktTNT × 1.000000e+12

Reverse: ktTNT = cal × 1.000000e-12

Step-by-Step Example

Start with your value in Kiloton of TNT. For example: 5 ktTNT
Multiply by the conversion factor: 5 x 1.000000e+12
The result is: 5.000000e+12 cal

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 Calorie (th)

The thermochemical calorie equals 4.184 joules. Not to be confused with the food Calorie (kcal), which equals 1,000 calories.

Common uses: chemistry, nutrition, heating.

Frequently Asked Questions

How many Calorie (th) are in 1 Kiloton of TNT?

There are exactly 1.000000e+12 Calorie (th) in 1 Kiloton of TNT. This means the conversion factor from Kiloton of TNT to Calorie (th) is 1.000000e+12.

What is the formula to convert Kiloton of TNT to Calorie (th)?

The formula to convert Kiloton of TNT to Calorie (th) is: cal = ktTNT × 1.000000e+12. For example, to convert 10 Kiloton of TNT to Calorie (th), you would multiply 10 by 1.000000e+12.

What is a Kiloton of TNT?