Heat Conversion
Convert units of energy, work, heat, and electrical energy
Features
Heat conversion across 11 categories
Covers a wide range from energy to specific heat capacity
Convert all units from one input
Pick a base unit and see the values for other units at once
Includes both IT and th standards
Strictly distinguishes even definitional differences in calories and BTU
Copy results with one click
Quickly copy converted values with a button
How to use
Select a conversion category
Choose the field you need, such as energy or thermal conductivity, from the dropdown
Enter a value and base unit
Enter a number in the value field and select the base unit to convert from
Check and copy the results
Converted values for other units are listed, and you can copy them with the copy button
Use cases
Unifying units in HVAC and thermal design
Align documents mixing calories and BTU to a joule basis for calculation
Comparing electrical energy and energy
Convert kWh and joules to grasp power consumption on a common scale
Study aid for science and physics
Use it for assignments and experiments while checking unit conversions of heat and specific heat
Reading overseas standard documents
Understand British and American units like BTU and therm by converting them to SI units
Basic Knowledge
What is BTU (British Thermal Unit)?
BTU is a unit of heat primarily used in the United States, where 1 BTU equals approximately 1,055 joules. It is commonly seen in the specifications of air conditioning and heating equipment.
Difference Between IT and Thermochemical Calories
There are two definitions of calories in coexistence: IT calories based on the International Steam Tables (1 cal = 4.1868 J) and thermochemical calories (1 cal = 4.184 J). Although the difference is small, in precise calculations it is necessary to verify which system the values belong to.
Safety and Privacy
Runs entirely in your browser
Your input data is processed only within your browser and is never sent externally.
Processing only in your browser
converting units of heat and energy is processed entirely within your browser, and input data is not sent to any server.
Communications encrypted with HTTPS
Page loading is also encrypted by TLS, and content cannot be read by third parties.
No transmission to third parties
Input content is not sent to external services such as ad networks or trackers.
No automatic saving of results
input values and conversion results and input suggestions are not stored on the server.
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Can be used for commercial purposes such as research, calculation, processing, and conversion in business and production.
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Usage guidelinesYou are free to use it for normal purposes. However, use for purposes that violate laws, infringe on third-party rights, impose significant load on the service, or otherwise interfere with service operation is prohibited.
We do not guarantee the accuracy or completeness of information and calculation results obtained from each tool.
This notice is a translation of the original Japanese text. If there is any discrepancy between the translation and the original, the Japanese original takes precedence.