Kilocalorie to Kiloton of TNT Converter

Energy Converter

27 units available

Decimals:

From

To

1.000000e-9

1 kcal = 1.000000e-9 ktTNT

Formula:

ktTNT = kcal × 1.000000e-9

With your value: 1 kcal = 1.000000e-9 ktTNT

How big is that?

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

Heartbeat (1/4.2e+3 your value)0.000239 kcal

Your value1.00 kcal

AA battery charge (2.4× your value)2.39 kcal

Slice of bread (67× your value)66.9 kcal

Daily food intake (2.0e+3× your value)2.01e+3 kcal

Litre of petrol (8.2e+3× your value)8.17e+3 kcal

Other Kilocalorie to Kiloton of TNT conversions

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

Kilocalorie to Kiloton of TNT Conversion Table

Kilocalorie (kcal)	Kiloton of TNT (ktTNT)
0.5	5.000000e-10
1	1.000000e-9
2	2.000000e-9
5	5.000000e-9
10	1.000000e-8
15	1.500000e-8
20	2.000000e-8
25	2.500000e-8
50	5.000000e-8
100	1.000000e-7
250	2.500000e-7
500	5.000000e-7
1000	1.000000e-6

Kiloton of TNT to Kilocalorie Conversion Table

Kiloton of TNT (ktTNT)	Kilocalorie (kcal)
0.5	500,000,000
1	1,000,000,000
2	2,000,000,000
5	5,000,000,000
10	10,000,000,000
15	15,000,000,000
20	20,000,000,000
25	25,000,000,000
50	50,000,000,000
100	100,000,000,000
250	250,000,000,000
500	500,000,000,000
1000	1.000000e+12

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.

Kilocalorie (kcal)

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 Kilocalorie to Kiloton of TNT

To convert from Kilocalorie (kcal) to Kiloton of TNT (ktTNT), multiply the value by 1.000000e-9.

Formula: ktTNT = kcal × 1.000000e-9

Reverse: kcal = ktTNT × 1.000000e+9

Step-by-Step Example

Start with your value in Kilocalorie. For example: 5 kcal
Multiply by the conversion factor: 5 x 1.000000e-9
The result is: 5.000000e-9 ktTNT

About Kilocalorie

The kilocalorie (food Calorie) equals 1,000 calories or 4,184 joules. It is the standard unit for food energy content.

Common uses: nutrition, diet, food labeling.

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 Kilocalorie?

There are exactly 1.000000e-9 Kiloton of TNT in 1 Kilocalorie. This means the conversion factor from Kilocalorie to Kiloton of TNT is 1.000000e-9.

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

The formula to convert Kilocalorie to Kiloton of TNT is: ktTNT = kcal × 1.000000e-9. For example, to convert 10 Kilocalorie to Kiloton of TNT, you would multiply 10 by 1.000000e-9.

What is a Kilocalorie?