Energy Converter
Convert between joules, calories, kilocalories, watt-hours, kilowatt-hours, BTU, and more.
1 Kilowatt-hour equals…
| Unit | Value |
|---|---|
| Joule (J) | 3600000 |
| Kilojoule (kJ) | 3600 |
| Megajoule (MJ) | 3.6 |
| Calorie (small) (cal) | 860420.65 |
| Kilocalorie (food) (kcal) | 860.42065 |
| Watt-hour (Wh) | 1000 |
| Kilowatt-hour (kWh) | 1 |
| BTU (BTU) | 3412.1282 |
| Electronvolt (eV) | 2.2472e+25 |
Click any row to set it as the target unit.
About the Energy Converter
Energy is measured in many units depending on the field: kilocalories (kcal) in nutrition, kilowatt-hours (kWh) in electricity billing, joules in physics, BTU in HVAC, and tonnes of oil equivalent in energy policy. For most Indians, kWh and kcal are the most practical units - the first determines your electricity bill, the second your daily calorie intake for fitness goals.
Energy Conversion Reference
1 kWh = 3,600,000 J = 3,600 kJ = 860.4 kcal · 1 kcal = 4,186 J = 4.186 kJ
1 BTU = 1,055 J · 1 calorie (small c, physics) = 4.186 J · 1 kcal (food calorie, capital C) = 4,186 J = 1 Cal · 1 kWh electricity at ₹7 = 860 kcal of food energy
Worked Example
1 kWh electricity bill unit - how many food calories?
1 kWh = 860 kcal · At ₹7/kWh, you pay ₹7 for energy equivalent of 860 kcal of food
Tips & Insights
- 1
Food labels use 'kcal' and 'Calories' (capital C) interchangeably - a 300 Calorie snack = 300 kcal = 1,255 kJ.
- 2
Average Indian household uses 200-400 kWh per month. A 1.5-ton AC running 8 hours/day uses ~5 kWh/day = 150 kWh/month.
- 3
HVAC systems are rated in BTU/hour. 1 ton of AC = 12,000 BTU/hour = 3.52 kW cooling capacity.
Why this matters for you
Energy literacy reduces electricity bills and improves nutrition tracking. Knowing that 1 kWh (one unit of electricity) costs ₹7 and that your 1.5 ton AC consumes 1.5 kWh per hour makes energy-saving decisions concrete. Similarly, understanding that 300 kcal = one moderate meal informs smarter food choices more viscerally than abstract numbers.
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