Index

Site Map

Every page on BTU to Watts, organized so you can find what you need.

Main

Main BTU ↔ Watts converter with live flow visualization and reference table.

Converters

Six dedicated tool pages, each with its own live calculator, interactive scale diagram, formula derivation, reference table, worked example, and FAQ.

Kilowatts for metric and European HVAC specs.

Megawatts for industrial chillers and power plants.

Apparent power to heat output with power factor.

BTU/hr to Horsepower

Thermal power in mechanical hp for motor sizing.

BTU/hr to kcal/hr

Metric calorie-based HVAC spec conversion.

Commercial HVAC schedules and boiler plate ratings.

Cooling capacity from BTU/hr nameplate to contractor tonnage.

Energy quantity for gas-vs-electric cost comparisons.

Exact SI energy conversion for physics and chemistry.

Engineering and food-science energy in kilojoules.

Blog

Long-form articles on BTU and watts — the math, the units, and the practical sizing decisions behind both.

All articles on BTU, watts, and HVAC sizing.

What the two units measure and how they differ.

What Is BTU to Watts?

The 3.412 conversion factor explained.

How to Convert BTU to Watts

Formula, worked examples, and mental-math shortcuts.

Information

What we built, why we built it, and who it's for.

Send feedback, bug reports, or a new-tool request.

Legal

Terms & Conditions

Rules and disclaimers for using the site.

What we collect (very little) and what we don't.

Looking for something we don’t have yet? Tell us — we add new converters based on what people ask for.