18 Btu/hour to Watts

18 Btu/h ≈ 5.2753 W

Calculation: W = 18 Btu/h × 0.293071 ≈ 5.2753 W

Btu/hour to Watt Converter

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How much power is 18 Btu/h?

5.28 W is comparable to a smartphone charger.

What does 18 Btu/h look like?

Comparable to a smartphone charger
5.28 W is comparable to a smartphone charger.

Did you know? USB charger (standard) is 5 W.

A basic USB charger delivers 5V x 1A = 5W. USB-C fast chargers can deliver 20-100W.

How to Convert Btu/hour to Watt

1 Btu/hour = 0.293071 watts

Watt = Btu/hour × 0.293071

Example: 18 Btu/h × 0.293071 = 5.2753 W

Reverse Conversion

To convert watts back to Btu/hour:

  • Remember, 1 watt equals 3.41214 Btu/hour.
  • To convert 5.2753 W to Btu/h, multiply 5.2753 x 3.41214, resulting in 18 Btu/h.

18 Btu/h is also equal to:

  • 0.0052753 kilowatt
  • 0.0070714 horsepower (electric)
About these units

Btu/hour: British thermal units per hour — rate of energy transfer, commonly used in heating and cooling systems.

Watt: SI base unit of power equal to one joule per second.

Frequently Asked Questions

How much is 18 Btu/hour in watts?

18 Btu/hour equals 5.2753 watts. This is calculated by multiplying 18 by the conversion factor 0.293071.

What does 18 Btu/hour look like in watts?

18 Btu/hour (5.2753 watts) is a small space heater or a portable AC unit.

How do you calculate 18 Btu/hour to watts?

Multiply 18 by the conversion factor 0.293071. The calculation is 18 × 0.293071 = 5.2753 watts. This factor is defined by international measurement standards.

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18 Btu/hour = 5.27528 watts
18 Btu/hour = 5.27528 watts — conversion chart

Nearby Conversions

8 Btu/hour2.345 watts 9 Btu/hour2.638 watts 10 Btu/hour2.931 watts 11 Btu/hour3.224 watts 12 Btu/hour3.517 watts 13 Btu/hour3.81 watts 14 Btu/hour4.103 watts 15 Btu/hour4.396 watts 16 Btu/hour4.689 watts 17 Btu/hour4.982 watts 19 Btu/hour5.568 watts 20 Btu/hour5.861 watts 21 Btu/hour6.154 watts 22 Btu/hour6.448 watts 23 Btu/hour6.741 watts 24 Btu/hour7.034 watts 25 Btu/hour7.327 watts 26 Btu/hour7.62 watts 27 Btu/hour7.913 watts 28 Btu/hour8.206 watts

For general conversions between Btu/hour and watts, see the Btu/hour to watts converter.

Also convert Btu/hour to:

Conversion factors verified against NIST, BIPM, ISO 80000-4 Based on SI base units (W = J/s, BIPM). Last reviewed: April 2026
Adilson Fernandes By Adilson Fernandes
Tiago Fernandes Reviewed by Tiago Fernandes

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.