# BTU to Watts

> Free online converters between BTU and electrical power and energy units (watts, kilowatts, kWh, joules, tons of refrigeration, horsepower, and more), with formulas, worked examples, and quick-reference tables for HVAC and equipment-sizing work.

The main converter lives on the homepage: https://btutowatts.com/

## Converters

- [BTU/hr to kW](https://btutowatts.com/kw/): Convert BTU/hr to kW with a live calculator, formula, worked example, and full reference table for HVAC, heating, and equipment-sizing work.
- [BTU/hr to MW](https://btutowatts.com/mw/): Convert BTU/hr to MW with a live calculator, formula, and reference table for chillers, district cooling, and power-plant capacity sizing.
- [KVA to BTU/hr](https://btutowatts.com/kva/): Convert kVA to BTU/hr with power factor. Live calculator, power-factor triangle, and reference table for UPS, generator, and data-center cooling sizing.
- [BTU/hr to Horsepower](https://btutowatts.com/horsepower/): Convert BTU/hr to mechanical horsepower. Live calculator, formula, and reference table for motor sizing, HVAC, and legacy equipment specs.
- [BTU/hr to kcal/hr](https://btutowatts.com/kcal/): Convert BTU/hr to kcal/hr with a live calculator, formula, and reference table for European, Japanese, and other metric HVAC and heating specs.
- [BTU/hr to MBH](https://btutowatts.com/mbh/): Convert BTU per hour to MBH. Live calculator, formula, and a quick-reference table for commercial HVAC schedules, boiler ratings, and gas appliance specs.
- [BTU/hr to Tons](https://btutowatts.com/tons/): Convert BTU/hr to tons of refrigeration. Live calculator, formula, and reference table for HVAC spec reading and contractor tonnage matching.
- [BTU to kWh](https://btutowatts.com/kwh/): Convert BTU to kWh. Live calculator, formula, and a quick-reference table for utility bill analysis, energy audits, and HVAC seasonal-load math.
- [BTU to Joules](https://btutowatts.com/joules/): Convert BTU to joules. Live calculator, exact international-BTU factor, and a reference table for physics coursework, chemistry, and heat-transfer engineering.
- [BTU to kJ](https://btutowatts.com/kj/): Convert BTU to kJ. Live calculator, exact factor, and a quick-reference table for engineering, food science, and chemistry energy calculations.
- [BTU to MMBTU](https://btutowatts.com/mmbtu/): Convert BTU to MMBTU. Live calculator, formula, and a quick-reference table for natural-gas billing, commercial energy contracts, and combustion engineering.
- [BTU to Therms](https://btutowatts.com/therm/): Convert BTU to therms. Live calculator, exact ratio, and a quick-reference table for natural-gas bills, residential heating audits, and rate comparison.
- [BTU to Watt-hours](https://btutowatts.com/watt-hour/): Convert BTU to Wh. Live calculator, exact factor, and a quick reference for battery capacity equivalence, small-appliance energy use, and lab energy logging.
- [BTU/s to Watts](https://btutowatts.com/btu-per-second-to-watts/): Convert BTU/s to watts. Live calculator, exact factor (1 BTU/s = 1,055 W), and reference table for heat-transfer physics, calorimetry, and thermal research.
- [BTU/min to Watts](https://btutowatts.com/btu-per-minute-to-watts/): Convert BTU/min to watts. Live calculator, exact 17.58 W factor, and reference table for calorimetry, bench tests, and short-cycle thermal work.
- [BTU/day to Watts](https://btutowatts.com/btu-per-day-to-watts/): Convert BTU/day to watts. Live calculator, exact factor, and reference table for annual energy models, geothermal loads, and cold-chain refrigeration math.

## Blog

- [BTU vs Watts: What's the Real Difference?](https://btutowatts.com/blog/btu-vs-watts/): Both measure energy but answer different questions. The 3.412 ratio in plain English.
- [What Is BTU to Watts? The 3.412 Factor Explained](https://btutowatts.com/blog/what-is-btu-to-watts/): The conversion that turns a heating rating into an electrical power rating.
- [How to Convert BTU to Watts](https://btutowatts.com/blog/how-to-convert-btu-to-watts/): Divide BTU/h by 3.412. Worked examples, mental-math shortcuts, and edge cases.
- [How to Convert Watts to BTU](https://btutowatts.com/blog/how-to-convert-watts-to-btu/): Multiply watts by 3.412. Examples for heaters, ACs, computers, and heat pumps.
- [BTU to Watts Chart: Quick Reference Tables](https://btutowatts.com/blog/btu-to-watts-chart/): Conversion tables for AC sizing, heat pumps, gas appliances, and solar setups.

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