Earth Bondhon
Creators
Rojony Khatun Author
Rojony Khatun
CalculatorToolsProjectExpert
Reviewers
Małgorzata Koperska, MD Steven Wooding
Last updated: August 19, 2025

Btu per Hour to Watts Calculator: BTU/h to W Conversion

🇺🇸
English
Default
🇪🇸
Español
Spanish
🇫🇷
Français
French
🇩🇪
Deutsch
German
B/h
W

Btu per hour to watts calculator

Convert BTU per hour (Btu/h) to watts (W) and vice versa. 1 Btu/h = 0.29307107 W for heating, cooling, and HVAC power ratings.

btu per hour to watts calculator

Convert BTU per hour to watts easily: W = BTU/h0.29307107. In the case of the reverse, BTU/h = W x 3.412141633. Ideal when calculating HVAC, heating, and cooling.

Formula & Table Summary:

Formulas

BTU/h → W : W = BTU/h × 0.29307107
W → BTU/h : BTU/h = W × 3.412141633

btu/h watts formula

The BTU per Hour to Watts Calculator is used to convert between BTU/h (British Thermal Units per hour) and watts (W), two of the more common power units in heating, ventilation, and air conditioning (HVAC) and electrical and thermal engineering. the change is as follows: 1 Btu/ h = 0.29307107 W and vice versa 1 W = 3.412141633 Btu/h. This is necessary in cases calling for comparison of the U.S. customary HVAC capacity rating to SI-related electrical or mechanical power ratings. Engineers, technicians and homeowners find it handy to verify the heater or air conditioner specs, estimating power requirement or air conditioner efficiency. The equation is easy to solve, the figures accurate and the calculator fine-tuned to produce precise or correct answers without having to go manual computing.

btu/h to electrical watts

Unit InValue InUnit OutValue Out
BTU/h1W0.2931
BTU/h5W1.4654
BTU/h10W2.9307
BTU/h100W29.3071
BTU/h500W146.5355
W1BTU/h3.4121
W10BTU/h34.1214
W100BTU/h341.2142

Frequently Asked Questions - Btu per hour to watts calculator:

What is the BTU/h to watts formula?

W = BTU/h × 0.29307107.

How do I convert watts to BTU/h?

BTU/h = W × 3.412141633.

Why is 1 W equal to 3.412 BTU/h?

It comes from the definition of the BTU and conversion from joules per second.

Is this used for HVAC?

Yes, HVAC systems often list capacity in BTU/h which can be converted to watts.

Does this apply to cooling and heating?

Yes, the formula is the same for both cooling and heating capacity.

What is a BTU?

A BTU is the amount of heat required to raise 1 lb of water by 1°F.

Why use watts instead of BTU/h?

Watts are the SI unit of power and used globally in electrical and mechanical engineering.

How do I convert BTU/h to kW?

kW = (BTU/h × 0.29307107) ÷ 1000.

Is 1,000 BTU/h a lot?

It’s about 293 watts—enough for a small space heater or cooling unit.

Can I round the factor?

Yes, you can use 0.2931 W per BTU/h for quick estimates.

Rojony Khatun

Rojony Khatun

CalculatorToolsProject

Rojony Khatun is the creator of a free online tools website designed to simplify everyday and engineering-related calculations for students, professionals, and hobbyists. The platform offers a wide variety of basic and advanced calculators across key categories, including Electrical Calculators, Electronic Calculators, and Time & Date Calculators, helping users solve problems quickly and accurately.