1. What is a Cost per BTU Comparison Calculator?

Definition: This calculator determines the total cost of energy based on the quantity in BTUs and the price per BTU.

Purpose: It helps compare the cost efficiency of different energy sources by standardizing their costs per BTU unit.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( C \) — Total cost ($)
• \( Q \) — Energy quantity (BTU)
• \( P_{btu} \) — Price per BTU ($/BTU)

Explanation: The energy quantity is multiplied by the price per BTU to calculate the total cost.

3. Importance of Cost per BTU Comparison

Details: Comparing costs per BTU allows for objective evaluation of different energy sources regardless of their measurement units (gallons, kWh, cubic feet, etc.).

4. Using the Calculator

Tips: Enter the energy quantity in BTUs and the price per BTU (default 0.00001 $/BTU). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is a BTU?
A: A British Thermal Unit (BTU) is a standard measure of energy, defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit.

Q2: How do I convert other units to BTUs?
A: Common conversions:

• 1 kWh = 3,412 BTU
• 1 therm = 100,000 BTU
• 1 gallon of gasoline = 120,238 BTU

Q3: What's a typical price per BTU?
A: Prices vary by energy source and location. For example:

• Natural gas: ~0.00001 $/BTU
• Electricity: ~0.00003 $/BTU
• Propane: ~0.00004 $/BTU

Q4: Why compare costs per BTU?
A: It allows direct comparison of different energy sources regardless of their original measurement units.

Q5: How accurate is this comparison?
A: While it provides a good cost comparison, actual efficiency may vary based on equipment and application.