Energy Conversion Table
Convert between different energy units including Joules, Calories, BTU, and more. Get accurate energy conversions for scientific and engineering applications.
| Unit | Symbol | Joules (J) | Calories (cal) | Kilocalories (kcal) | BTU | table.headers.kilowattHours |
|---|---|---|---|---|---|---|
| Joule | J | 1.000000e+0 | 2.390057e-1 | 2.390057e-4 | 9.478134e-4 | 2.777778e-7 |
| Kilojoule | kJ | 1.000000e+3 | 2.390057e+2 | 2.390057e-1 | 9.478134e-1 | 2.777778e-4 |
| Calorie | cal | 4.184000e+0 | 1.000000e+0 | 1.000000e-3 | 3.965651e-3 | 1.162222e-6 |
| Kilocalorie | kcal | 4.184000e+3 | 1.000000e+3 | 1.000000e+0 | 3.965651e+0 | 1.162222e-3 |
| British Thermal Unit | BTU | 1.055060e+3 | 2.521654e+2 | 2.521654e-1 | 1.000000e+0 | 2.930722e-4 |
| Kilowatt Hour | kWh | 3.600000e+6 | 8.604207e+5 | 8.604207e+2 | 3.412128e+3 | 1.000000e+0 |
| Foot-pound | ft⋅lbf | 1.355820e+0 | 3.240488e-1 | 3.240488e-4 | 1.285064e-3 | 3.766167e-7 |
| Erg | erg | 1.000000e-7 | 2.390057e-8 | 2.390057e-11 | 9.478134e-11 | 2.777778e-14 |
Features
- ✓Comprehensive energy unit coverage
- ✓Real-time conversion calculations
- ✓Scientific notation for precise values
- ✓Search and filter functionality
- ✓Mobile-responsive design
- ✓Copy-friendly formatted results
How to Use the Energy Conversion Table
Find Your Unit
Locate the energy unit you want to convert from in the table. Use the search function to quickly find specific units.
Read Conversion Values
Read across the row to see the equivalent values in other energy units. All conversions are calculated in real-time with high precision.
Apply Conversions
Use the converted values in your scientific calculations, energy management, or nutrition planning.
Verify Results
Double-check important calculations using the precise conversion factors provided.
Common Use Cases
Scientific Research
Convert energy measurements for physics experiments, chemical reactions, and scientific calculations.
Home Energy
Convert energy consumption units for electricity bills, appliance ratings, and energy efficiency calculations.
Nutrition & Health
Convert between calories and joules for dietary planning, nutrition labels, and metabolic calculations.
Industrial Applications
Convert energy specifications for industrial processes, heating systems, and energy management.
Frequently Asked Questions
What is the difference between calories and Calories?
A calorie (cal) is the amount of energy needed to heat 1 gram of water by 1°C. A Calorie (Cal) or kilocalorie (kcal) equals 1000 calories and is commonly used in nutrition.
How accurate are the energy conversions?
Our conversions use precise conversion factors and display results in scientific notation for maximum accuracy. The calculations are suitable for scientific and engineering applications.
What is the most commonly used energy unit?
Joules (J) is the SI base unit for energy and most commonly used in scientific applications. Kilowatt-hours (kWh) are widely used for electrical energy consumption.
Can I convert between mechanical and thermal energy units?
Yes, our table includes both mechanical energy units (joules, foot-pounds) and thermal energy units (calories, BTU) for comprehensive conversions.