1. What is an Electricity Calculator UK kWh?

Definition: This calculator estimates electricity consumption in kilowatt-hours (kWh) based on appliance power and usage time.

Purpose: It helps UK households and businesses understand their electricity usage for energy management and cost estimation.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( E \) — Electricity consumption (kWh)
• \( P \) — Power of appliance (watts)
• \( t \) — Time used (hours)

Explanation: The formula converts watt-hours to kilowatt-hours by dividing by 1000, which is the standard UK electricity billing unit.

3. Importance of Electricity Calculation

Details: Understanding kWh consumption helps with energy budgeting, comparing appliance efficiency, and estimating electricity bills.

4. Using the Calculator

Tips: Enter the appliance power in watts and usage time in hours. Typical UK appliance powers:

• LED bulb: 5-15W
• Fridge: 100-400W
• Kettle: 2000-3000W

5. Frequently Asked Questions (FAQ)

Q1: Why divide by 1000?
A: UK electricity is billed in kilowatt-hours (kWh), which equals 1000 watt-hours.

Q2: How do I find my appliance's power?
A: Check the label, manual, or use an energy monitor. UK appliances must display power ratings.

Q3: Does this include standing charges?
A: No, this calculates consumption only. UK bills also include daily standing charges.

Q4: How accurate is this for variable power devices?
A: For devices with variable power (like fridges), use average power or a smart meter for better accuracy.

Q5: Can I calculate costs from this?
A: Yes, multiply kWh by your electricity rate (typically 20-30p/kWh in UK as of 2023).