1. What is Watts to BTU/hr Conversion?

The Watts to BTU/hr conversion calculates the equivalent power in British Thermal Units per hour from a given value in watts. This is commonly used in heating and cooling applications where both electrical (watts) and thermal (BTU) measurements are relevant.

2. How Does the Conversion Work?

The conversion uses the following formula:

Where:

• \( \text{BTU/hr} \) — British Thermal Units per hour
• \( \text{W} \) — Power in watts
• \( 3.412142 \) — Conversion factor (exact value)

Explanation: 1 watt is equal to 3.412142 BTU per hour. This conversion factor comes from the definition of the BTU and the relationship between different units of power.

3. Practical Applications

Details: This conversion is particularly useful for:

• Comparing electrical heating systems with gas-powered systems
• Sizing air conditioners and heaters
• Energy efficiency calculations
• Converting electrical power ratings to thermal output

4. Using the Calculator

Tips: Simply enter the power value in watts (must be a positive number) and click "Convert" to get the equivalent value in BTU/hr.

5. Frequently Asked Questions (FAQ)

Q1: What is the exact conversion factor?
A: The exact conversion is 1 watt = 3.412142 BTU/hr, based on the international table BTU definition.

Q2: Why convert watts to BTU/hr?
A: Many heating and cooling systems are rated in BTU/hr, while electrical systems are rated in watts. This conversion allows for direct comparison.

Q3: Is this conversion reversible?
A: Yes, to convert BTU/hr to watts, divide by 3.412142 (or multiply by ~0.293071).

Q4: How accurate is this conversion?
A: The conversion is mathematically exact when using the international table BTU definition.

Q5: Does this apply to all types of watts and BTU?
A: Yes, as long as you're using standard definitions (international watt and international table BTU).