Monthly Electricity Cost Calculator

Last updated: 2026-08-24

Monthly Electricity Cost Calculator — Monthly electricity cost estimation based on consumption.
Inputs
Result
Enter values and press Calculate

How to use it

  1. Calculate consumption diario: 1000W × 5h ÷ 1000 = 5 kWh/day
  2. Calculate consumption mensual: 5 kWh × 30 days = 150 kWh/month
  3. Calculate costo: 150 kWh × 0.15 €/kWh = 22.50€/month
  4. Compare with otros aparatos to Identify mayores consumidores

Common mistakes

  • ⚠️ Not Consider consumption in standby (puede ser 5-10% of the total)
  • ⚠️ Use power nominal in lugar of consumption real medido
  • ⚠️ Not Consider variation of price per hours punta/valle

Worked example

Calculate monthly electricity consumption for a household.

Aparato of {power_w}W usado {horas_dia}h/day consume {consumption_diario_kwh} kWh/day, {consumption_mensual_kwh} kWh/month. Costo mensual: {costo_mensual}€.

Input guide

FieldTypical range
potencia_wPotencia of the aparato in watts
precio_kwhPrecio of the electricidad (varía per contrato and país)
horas_diaHoras of uso diario