Convert between units of energy and power, such as kilowatt-hours (kWh), Joules (J), calories (cal), British Thermal Units (BTU), watts (W), and kilowatts (kW). This tool is essential for understanding electricity bills, calculating nutritional energy, solving physics problems, and comparing appliance power consumption. For example, 1 kWh equals 3.6 million Joules.
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Common Energy & Power Conversions
- Energy: 1 kWh = 3,600,000 J = 860,421 cal
- Energy: 1 BTU = 1,055 J = 252 cal
- Energy: 1 cal = 4.184 J
- Power: 1 kW = 1,000 W = 1.341 hp
- Power: 1 hp = 745.7 W = 0.7457 kW
Note: Energy and power are different - energy is power × time. You can convert within energy units (J ↔ kWh) or within power units (W ↔ kW), but not between energy and power without a time component.