1. What is BTU to Watts Conversion?

The conversion between British Thermal Units per hour (BTU/hr) and watts (W) is essential for comparing heating/cooling capacities between systems using different measurement units. 1 watt equals approximately 3.412142 BTU per hour.

2. How Does the Calculator Work?

The calculator uses the conversion formula:

Where:

• \( W \) — Power in watts (W)
• \( Q \) — Power in BTU per hour (BTU/hr)
• 3.412142 — Conversion factor (BTU/hr per watt)

Explanation: This formula converts power measurements from BTU/hr to watts by dividing by the conversion factor.

3. Practical Applications

Details: This conversion is commonly used in HVAC systems, electrical engineering, and energy efficiency calculations where equipment specifications may use different units.

4. Using the Calculator

Tips: Enter the BTU/hr value (must be positive). The calculator will automatically compute the equivalent power in watts.

5. Frequently Asked Questions (FAQ)

Q1: Why is the conversion factor 3.412142?
A: This comes from the definition of 1 BTU as approximately 1055.056 joules and 1 watt as 1 joule per second.

Q2: Can I convert watts to BTU/hr using this?
A: Yes, the reverse calculation would be BTU/hr = Watts × 3.412142.

Q3: Is this conversion exact?
A: It's based on the International Table BTU definition. Other BTU definitions might give slightly different results.

Q4: When would I need this conversion?
A: When comparing air conditioner capacities (often in BTU/hr) with electrical power requirements (in watts).

Q5: What's a typical BTU/hr rating for home air conditioners?
A: Residential units typically range from 5,000 BTU/hr (small window unit) to 36,000 BTU/hr (whole-house system).