ToolSnippet

Energy & Power Unit Converter

Convert energy and power units between Joules, Kilocalories, Kilowatt-Hours (kWh), BTUs, Watts, and Horsepower (hp).

About This Tool

The Energy & Power Unit Converter converts physical energy and electrical power units across 9 standard metrics (Joules, Kilojoules, Calories, Food Kilocalories, Watt-hours, kWh, BTUs, Watts, and Mechanical Horsepower).

Key Features

Converts Energy: Joules (J), Kilojoules (kJ), Calories (cal), Kilocalories (kcal), Watt-hours (Wh), Kilowatt-hours (kWh), and BTUs
Converts Power: Watts (W), Kilowatts (kW), and Horsepower (hp)
Instant simultaneous multi-unit output
High-precision scientific notation formatting

How to Use This Tool

  1. Enter numerical value and select source unit.
  2. View converted measurements across all standard units.

Why Use This Tool

  • Estimate electrical power consumption and home energy bills from appliance wattage.
  • Convert mechanical engine horsepower to kilowatts.

Pro Tips

  • 1 Horsepower (hp) is defined as exactly 745.69987 Watts.
  • 1 Kilowatt-Hour (kWh) equals 3.6 Million Joules (3.6 MJ).

Frequently Asked Questions

What is the difference between Energy and Power?

Power (measured in Watts) is the rate at which work is done per second. Energy (measured in Joules or kWh) is the total work done over time.

How many Joules are in 1 Kilowatt-Hour (kWh)?

1 kWh equals 1,000 Watts × 3,600 seconds = exactly 3,600,000 Joules (3.6 Megajoules).

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