Question 1

What is a Joule?

Accepted Answer

A Joule is the SI unit of energy. 1 Joule = 1 Newton-meter.

Question 2

What is BTU?

Accepted Answer

BTU (British Thermal Unit) is the energy needed to heat 1 pound of water by 1°F.

Question 3

How do I convert online free?

Accepted Answer

Pick the from and to units above and the result appears instantly. Free, no sign-up, works on mobile.

Question 4

Which units are supported?

Accepted Answer

All common units are supported. Choose from the dropdowns above for an instant free conversion.

Question 5

Is the conversion instant?

Accepted Answer

Yes. Results appear live as you type, with no sign-up and no page reload.

Question 6

Is this Energy Converter free?

Accepted Answer

Yes, completely free with no sign-up. Use it unlimited times online on any device.