Convertidor de Energía
Joules, kWh, BTU y calorías
Required Parameters
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Quick Answer
1 Joule = 1 Watt-second. 1 kWh = 3,600,000 J = 3.6 MJ. 1 BTU = 1,055 J. 1 calorie = 4.184 J. Energy conversion is fundamental for comparing electrical, thermal, and mechanical power sources.
Calculadora de Conversion de Energia
Convierta entre unidades de energia: Julios, kilovatios-hora, calorias, BTU y electronvoltios.
Design Notes
In electronics, energy is most commonly expressed in watt-hours (Wh) for batteries and kWh for mains power. Joules appear in capacitor energy calculations (E = ½CV²) and ESD specifications.
Common Mistakes
- 1
Confusing energy (Joules, kWh) with power (Watts) — power is the RATE of energy transfer.
- 2
Mixing up calories (cal, 4.184 J) with food Calories (Cal = kcal = 4,184 J).
- 3
Comparing battery capacity in mAh across different voltages without converting to Wh first.
Knowledge Base
¿Cuánto es 1 Joule en vatios-segundo?
Exactamente lo mismo. 1 J = 1 W·s. 1 kWh = 3,600,000 J = 3.6 MJ.
¿Qué es un BTU?
1 BTU = 1,055 J. Energía para calentar 1 libra de agua 1°F. Usado en HVAC.
¿Cuánta energía almacena un capacitor?
E = ½CV² en joules. 1000µF a 400V = 80J. Una batería AA ≈ 13,500J.
¿Diferencia entre energía y potencia?
Energía (J, kWh) = trabajo total. Potencia (W) = tasa. Potencia × Tiempo = Energía.
¿Qué es un electrón-voltio?
1 eV = 1.602 × 10⁻¹⁹ J. Usado en semiconductores. Bandgap del silicio = 1.12 eV.
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