Is there a difference between nutritional and physics calories?
Yes—nutritional calories are kilocalories. The converter lists both so you can match the context you care about.
Step-by-step walkthrough
Energy Converter Guide
Use this companion guide beside the interactive calculator to make sure you understand the “why” behind every click. Each section includes the classroom explanation, student-friendly language, and quick practice prompts.
Before you start
Collect the data points listed below and double-check their units. Keeping an organized “givens” list is one of the fastest ways to reduce math errors and impress exam graders.
- energy
- joule
- watt-hour
Detailed procedure
Step 1
Enter the known value.
Step 2
Select the unit it represents.
Step 3
Review the equivalent energy across the remaining units.
Teaching & troubleshooting tips
Can I convert BTUs?
Not yet. Convert BTUs to joules manually (1 BTU ≈ 1,055.06 J) and paste the result here.