1. What is a kWh Cost Calculator UK?

Definition: This calculator estimates the electricity cost based on energy usage in kilowatt-hours (kWh) and the cost per kWh in the UK.

Purpose: It helps households and businesses estimate their electricity bills and compare energy costs.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( C \) — Total cost (£)
• \( E_{kWh} \) — Energy usage (kWh)
• \( C_{kWh} \) — Cost per kWh (£/kWh)

Explanation: The energy usage is multiplied by the cost per unit to calculate the total electricity cost.

3. Importance of kWh Cost Calculation

Details: Accurate cost estimation helps with budgeting, comparing energy tariffs, and identifying potential savings.

4. Using the Calculator

Tips: Enter your energy usage in kWh and the cost per kWh (default £0.28 for 2025 UK average). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Where can I find my energy usage?
A: Check your electricity bill or smart meter for kWh consumption data.

Q2: What's the average UK electricity rate?
A: As of 2025, the average is about £0.28 per kWh, but this varies by supplier and tariff.

Q3: Does this include standing charges?
A: No, this calculates usage costs only. Add your daily standing charge separately.

Q4: How can I reduce my electricity costs?
A: Consider energy-efficient appliances, switching suppliers, or using energy during off-peak hours.

Q5: Is VAT included in this calculation?
A: No, VAT would need to be added separately to the calculated amount.