UnitsConverter

Calorie to Therm Converter

Convert calories to therms with our free online energy converter.

Quick Answer

1 Calorie = 3.965651e-8 therms

Formula: Calorie × conversion factor = Therm

Use the calculator below for instant, accurate conversions.

Our Accuracy Guarantee

All conversion formulas on UnitsConverter.io have been verified against NIST (National Institute of Standards and Technology) guidelines and international SI standards. Our calculations are accurate to 10 decimal places for standard conversions and use arbitrary precision arithmetic for astronomical units.

Last verified: November 2025Reviewed by: Sam Mathew, Software Engineer

Calorie to Therm Calculator

How to Use the Calorie to Therm Calculator:

  1. Enter the value you want to convert in the 'From' field (Calorie).
  2. The converted value in Therm will appear automatically in the 'To' field.
  3. Use the dropdown menus to select different units within the Energy category.
  4. Click the swap button (⇌) to reverse the conversion direction.
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How to Convert Calorie to Therm: Step-by-Step Guide

Converting Calorie to Therm involves multiplying the value by a specific conversion factor, as shown in the formula below.

Formula:

therm = cal × 3.96565e-8

Example Calculation:

1 cal = 3.965651e-8 therm

Disclaimer: For Reference Only

These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.

Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.

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Conversion Table: Calorie to Therm

Calorie (cal)Therm (therm)
0.50
10
1.50
20
50
100
250
500
1000
2500
5000
1,0000

People Also Ask

How do I convert Calorie to Therm?

To convert Calorie to Therm, enter the value in Calorie in the calculator above. The conversion will happen automatically. Use our free online converter for instant and accurate results. You can also visit our energy converter page to convert between other units in this category.

Learn more →

What is the conversion factor from Calorie to Therm?

The conversion factor depends on the specific relationship between Calorie and Therm. You can find the exact conversion formula and factor on this page. Our calculator handles all calculations automatically. See the conversion table above for common values.

Can I convert Therm back to Calorie?

Yes! You can easily convert Therm back to Calorie by using the swap button (⇌) in the calculator above, or by visiting our Therm to Calorie converter page. You can also explore other energy conversions on our category page.

Learn more →

What are common uses for Calorie and Therm?

Calorie and Therm are both standard units used in energy measurements. They are commonly used in various applications including engineering, construction, cooking, and scientific research. Browse our energy converter for more conversion options.

For more energy conversion questions, visit our FAQ page or explore our conversion guides.

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Verified Against Authority Standards

All conversion formulas have been verified against international standards and authoritative sources to ensure maximum accuracy and reliability.

NIST Reference on Constants, Units and Uncertainty

National Institute of Standards and Technology — Fundamental physical constants and unit conversions

BIPM SI Units

Bureau International des Poids et Mesures — International System of Units (SI) definitions and standards

ISO 80000

International Organization for Standardization — Quantities and units international standards series

Last verified: November 14, 2025