⚡

Energy Converter

Convert between Joules, Calories, and other energy units

⚙️ Unit Converters ✅ Free to Use

Energy Converter

Convert between different energy units including Joules, calories, kilowatt-hours, BTUs, and more. Perfect for physics, engineering, and energy calculations.

Energy Value

From Unit

To Unit

1,000.000000 J

239.00573614 cal

Conversion Factor

1 J = 0.23900574 cal

Conversion Details

From: 1,000.000000 Joules (J)

To: 239.00573614 Calories (cal)

In Joules: 1,000.000000 J

Reverse Factor: 1 cal = 4.18400000 J

Scientific Notation: 2.390e+2 cal

Precision: 13 decimal places

1,000.000 J in Other Units

1.000000

Kilojoules (kJ)

cal

239.005736

Calories (cal)

kcal

0.239006

Kilocalories (kcal)

0.277778

Watt-hours (Wh)

kWh

0.000278

Kilowatt-hours (kWh)

BTU

0.947813

British Thermal Units (BTU)

Energy Equivalents

Lifting 1 kg by 1 meter

101.94 times

Powering 100W bulb

10.00 seconds

Heating 1g water by 1°C

239.01 times

Average human heartbeat

1,000.00 heartbeats

Energy Unit Categories

SI Units

Joule (J): Base unit

Kilojoule (kJ): 1,000 J

Megajoule (MJ): 10⁶ J

Gigajoule (GJ): 10⁹ J

Thermal Units

Calorie (cal): 4.184 J

Kilocalorie (kcal): 4,184 J

Food Calorie (Cal): = kcal

BTU: 1,055 J

Electrical Units

Watt-hour (Wh): 3,600 J

Kilowatt-hour (kWh): 3.6 MJ

Megawatt-hour (MWh): 3.6 GJ

Energy Scale References

Everyday Energy

• AA battery: ~10 kJ

• Food calorie: ~4.2 kJ

• Car battery: ~1.8 MJ

• Gallon of gasoline: ~130 MJ

• Home daily usage: ~30 kWh

• Lightning bolt: ~1-5 GJ

Human Body

• Resting metabolism: ~7 MJ/day

• Walking 1 mile: ~300 kJ

• Running 1 mile: ~400 kJ

• Lifting 50 lbs 1 foot: ~68 J

• One heartbeat: ~1 J