Energy Converter
Convert between 70+ energy units instantly - from atomic scales to cosmic energies. Features popular conversions like joules to calories, kWh to BTU, and comprehensive visual feedback.
Energy Conversion Guide
Electrical & Food Energy
One kWh costs about $0.12 in the US and powers an average home for 1-2 hours
LED bulbs use 80% less energy than incandescent bulbs for the same light output
Electric cars use about 3-4 miles per kWh, equivalent to 100+ MPG gasoline cars
Food calories are actually kilocalories (kcal) - 1000 times larger than scientific calories
Fat contains 9 kcal/g, while carbs and proteins contain 4 kcal/g each
Physics & Nuclear
Nuclear fission releases ~200 MeV per atom, millions of times more than chemical reactions
The sun converts 4 million tons of mass to energy every second (E=mc²)
E=mc² shows mass and energy are interchangeable (nuclear reactions)
Kinetic energy = ½mv² increases rapidly with velocity
Quick Conversion Tips
Renewable Energy
Solar panels convert about 15-22% of sunlight energy into electricity
Wind turbines can capture up to 59% of wind's kinetic energy (Betz limit)
Hydroelectric plants can achieve 90%+ efficiency in energy conversion
Fossil Fuels
Gasoline contains about 34 MJ/liter, diesel contains about 38 MJ/liter
Coal power plants are ~35% efficient, wasting 65% of fuel energy as heat
Natural gas is the cleanest fossil fuel, producing 50% less CO₂ than coal per kJ
Professional energy converter supporting 70+ units from atomic scale to cosmic measurements. Accurate conversions for physics, engineering, nutrition, and energy applications.