What does the kilocalorie (thermochemical) represent?

It is a unit of energy equal to 1,000 thermochemical calories and exactly defined as 4,184 joules.

Why convert kilocalories (th) to kilojoules?

Converting enables compatibility with SI units, widely used for scientific, nutritional, and engineering purposes.

Is the conversion factor fixed or approximate?

The conversion is exact, with 1 kcal (th) defined as 4.184 kJ.

How to Convert from Kilocalorie (th) [kcal (th)] to Kilojoule [kJ]?

Learn how to convert energy values from kilocalorie (thermochemical) to kilojoule using this precise and easy-to-use online unit converter tool.

Kilocalorie (th) [kcal (th)]

Kilojoule [kJ]

Please check your input. It must be a valid numeric value.

Kilocalorie (th) [kcal (th)] to Kilojoule [kJ] Conversion Table

Kilocalorie (th) [kcal (th)]	Kilojoule [kJ]

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Kilocalorie (th) [kcal (th)] to Kilojoule [kJ] Conversion Table
Kilocalorie (th) [kcal (th)]	Kilojoule [kJ]

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What Is This Tool?

This energy unit converter allows users to transform values from kilocalorie (thermochemical) [kcal (th)] to the SI-derived kilojoule [kJ]. It is designed to assist in nutritional, chemical, and engineering calculations by providing a straightforward conversion aligned with established definitions.

How to Use This Tool?

Enter the energy value in kilocalorie (th) you wish to convert.
Select kilocalorie (th) as the source unit and kilojoule as the target unit.
Initiate the conversion process to view the equivalent energy in kilojoules.

Key Features

Converts energy measurements from kilocalorie (thermochemical) to kilojoule.
Based on an exact conversion rate defined as 1 kcal (th) = 4.184 kJ.
Supports applications in nutrition labeling, thermochemistry, and engineering.
Browser-based and user-friendly interface for quick energy unit conversion.

Examples

5 kcal (th) converts to 20.92 kJ by multiplying 5 by 4.184.
10 kcal (th) converts to 41.84 kJ following the conversion rate.

Common Use Cases

Calculating food energy content for nutrition and dietary planning.
Performing chemical thermodynamics calculations involving reaction enthalpies.
Assessing heat transfer and energy storage in engineering applications.

Tips & Best Practices

Always verify that the kilocalorie used references the thermochemical definition.
Convert values to SI units for better consistency in scientific and engineering work.
Use the exact conversion factor of 4.184 to ensure accuracy within the tool’s scope.

Limitations

The kilocalorie (th) unit is less frequently used in modern science compared to SI units.
Different calorie definitions exist, so ensure kilocalorie (th) specifically is applicable.
Minor rounding errors may occur during conversion affecting highly precise calculations.

Frequently Asked Questions

What does the kilocalorie (thermochemical) represent?: It is a unit of energy equal to 1,000 thermochemical calories and exactly defined as 4,184 joules.
Why convert kilocalories (th) to kilojoules?: Converting enables compatibility with SI units, widely used for scientific, nutritional, and engineering purposes.
Is the conversion factor fixed or approximate?: The conversion is exact, with 1 kcal (th) defined as 4.184 kJ.

Key Terminology

Kilocalorie (thermochemical) [kcal (th)]: A unit of energy equal to 1,000 thermochemical calories, defined exactly as 4,184 joules, used mainly for food energy and thermochemical calculations.
Kilojoule [kJ]: An SI-derived energy unit equal to 1,000 joules, widely used in scientific, nutritional, and engineering fields.
Conversion Rate: The precise multiplication factor used to translate one energy unit to another, here specifically 1 kcal (th) equals 4.184 kJ.

Quick Knowledge Check

What is the exact conversion rate from kilocalorie (th) to kilojoule?

1 kcal (th) = 3.6 kJ

1 kcal (th) = 4.184 kJ

1 kcal (th) = 5 kJ

In which contexts is kilocalorie (th) commonly used?

Food energy and thermochemical engineering

Astronomy and optics

Acoustics and noise measurement

Why must users be cautious when converting kcal (th)?

Because the unit is deprecated

Due to different calorie definitions

Because conversion rates change daily

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