Energy Conversion Calculator

US Units

Metric Units


Navigating through various energy units is crucial in many professional, educational, and personal scenarios. Whether you’re calculating energy consumption for household appliances or performing complex calculations in physics, understanding energy conversions is key. Our comprehensive Energy Conversion Calculator simplifies this process, offering quick and accurate conversions across a range of energy units.

Energy Units

U.S. Units:

  • Foot-Pound (ft·lb): Common in mechanical engineering, representing the work done by a force of one pound.
  • British Thermal Unit (BTU): Widely used in HVAC systems, indicating the energy needed to raise the temperature of one pound of water by one degree Fahrenheit.
  • Calories (cal): Often used in nutritional contexts, measuring the energy in foods.

Metric Units:

  • Joules (J): The SI unit of energy, prevalent in various scientific and technical fields.
  • Kilowatt-hour (kWh): Standard in electricity billing, representing energy usage over time.
  • Megawatt-hour (MWh) and Gigawatt-hour (GWh): Larger units used for industrial energy consumption and production.

How to Use the Calculator

  1. Select the Unit: Choose the appropriate unit from the dropdown menu or input section.
  2. Enter the Value: Type in the energy amount you wish to convert.
  3. Get Results Instantly: The calculator automatically provides the equivalent value in various other energy units.

Frequently Asked Questions

Q1: How to Convert BTU to Kilowatt-Hours for Appliance Energy Efficiency?

Converting BTU (British Thermal Units) to kilowatt-hours (kWh) is essential for understanding the energy efficiency of household appliances. Our Energy Conversion Calculator easily translates BTU values into kWh, helping you assess the energy consumption of devices like air conditioners and heaters. This conversion is crucial for homeowners looking to reduce their energy bills and for professionals in the energy sector.

Q2: What’s the Best Method to Convert Joules to Calories for Physics Experiments?

For students and scientists conducting physics experiments, converting joules to calories is a frequent requirement. Our calculator provides a quick and accurate method for this conversion, aiding in experiments and studies related to energy, heat, and thermodynamics. This tool is particularly beneficial for educational purposes, offering an easy way to understand and apply fundamental energy concepts in scientific research.

Q3: Can I Calculate Energy Consumption in kWh from Watts for My Electronic Devices?

Calculating energy consumption in kilowatt-hours (kWh) from watts (W) is vital for monitoring the energy usage of electronic devices. Our Energy Conversion Calculator facilitates this process, allowing you to determine the kWh consumed by your devices based on their wattage and usage duration. This conversion is especially useful for individuals aiming to optimize their energy usage at home or in the office, as well as for professionals in energy management and sustainability.


Our Energy Conversion Calculator is an essential tool for anyone dealing with various energy units. Its ease of use and precision make it a go-to resource for professionals, students, and anyone interested in understanding and converting energy measurements. Simplify your energy calculations and try it out today for a more efficient and accurate conversion experience.