1. What is a BTU Wattage Heat Calculator?

Definition: This calculator converts electrical wattage to British Thermal Units per hour (BTU/h), measuring heat output.

Purpose: It helps determine the heating capacity of electrical heating systems in standard BTU measurements.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Q \) — Heat output (BTU per hour)
• \( P \) — Electrical power input (watts)

Explanation: One watt of electrical power produces approximately 3.412 BTU per hour of heat.

3. Importance of BTU Calculation

Details: Proper heat output estimation ensures adequate heating capacity for spaces and proper sizing of heating equipment.

4. Using the Calculator

Tips: Enter the electrical wattage of your heating device. The value must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why 3.412 as the conversion factor?
A: This is the standard conversion factor where 1 watt = 3.412 BTU/h exactly.

Q2: Does this work for all electric heaters?
A: Yes, this applies to all resistive electric heating elements where 100% of energy converts to heat.

Q3: What about heat pumps?
A: Heat pumps are more efficient (typically 200-300% efficient), so this calculation would underrepresent their actual heat output.

Q4: How many BTUs do I need per square foot?
A: Typically 20-30 BTU per sq ft in cold climates, but this depends on insulation, climate, and other factors.

Q5: Can I convert BTU back to watts?
A: Yes, divide BTU/h by 3.412 to get watts.