Energy Converter (Joule, kWh, Calorie, BTU)
About Energy Converter (Joule, kWh, Calorie, BTU)
The Energy Converter helps you quickly convert between common energy units — Joules (J), Kilowatt-hours (kWh), Calories (Cal), and British Thermal Units (BTU). It’s ideal for students, engineers, and anyone comparing electrical or thermal energy.
Formula (Simple Explanation)›
1 kWh = 3.6 × 10⁶ J = 860420.65 Cal = 3412.14 BTU
Each energy unit measures work or heat. Conversions are based on standard relationships between Joules, Calories, and BTUs. One kilowatt-hour equals 3.6 million Joules.
Example:
Input: Convert 2 kWh to Joules
Output: 2 × 3.6 × 10⁶ = 7,200,000 J
Steps to Use:
- Select the unit you want to convert from (J, kWh, Cal, or BTU).
- Enter the energy value.
- Choose the unit you want to convert to.
- Click 'Convert' to get the equivalent energy instantly.
Frequently Asked Questions
What is energy measured in?›
Energy is commonly measured in Joules (J), but other units like kilowatt-hours (kWh), Calories (Cal), and BTUs are used depending on the context.
How many Joules are in one kWh?›
1 kilowatt-hour (kWh) is equal to 3.6 × 10⁶ Joules (3,600,000 J).
What is the relationship between Calories and Joules?›
1 Calorie (Cal) equals approximately 4.184 Joules (J). This means energy in Calories can be converted by multiplying by 4.184.
What does BTU stand for?›
BTU stands for British Thermal Unit — it represents the amount of energy needed to raise the temperature of one pound of water by one degree Fahrenheit.
When should I use kWh instead of Joules?›
Kilowatt-hours are commonly used for measuring electrical energy consumption (like on electricity bills), while Joules are used in physics and scientific calculations.