1. What is a Watt to BTU Calculator?

Definition: This calculator converts power in watts to British Thermal Units per hour (BTU/h).

Purpose: It helps in HVAC, electrical engineering, and energy conversion applications where power measurements need to be converted between different units.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q \) — BTU per hour (BTU/h)
• \( P \) — Power in watts (W)

Explanation: The conversion factor 3.412 represents the number of BTUs per hour equivalent to one watt of power.

3. Importance of Watt to BTU Conversion

Details: This conversion is essential when matching electrical equipment to thermal systems, sizing cooling equipment, or comparing energy efficiency across different measurement systems.

4. Using the Calculator

Tips: Simply enter the power value in watts. The calculator will automatically compute the equivalent BTU/h value.

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 3.412?
A: This comes from the definition of BTU - it's the amount of energy needed to raise 1 pound of water by 1°F, and 1 watt is 1 joule per second.

Q2: Can I convert BTU/h back to watts?
A: Yes, divide the BTU/h value by 3.412 to get watts.

Q3: Is this conversion exact?
A: Yes, the 3.412 factor is a defined conversion constant, not an approximation.

Q4: Does this work for kilowatts?
A: Yes, first convert kW to watts (multiply by 1000) then use the calculator, or multiply kW by 3412 directly.

Q5: What's a typical wattage for household appliances?
A: A 1500W space heater converts to about 5118 BTU/h, similar to many small room heaters.