Estimate combined household electricity, gas, and water bills from your region and household size. Use it for a monthly utility snapshot rather than a meter-reading bill check for a single fuel.
Total cost per month:
£225.52
Total cost per year:
£2,706.19
| Per month | Per year | |
|---|---|---|
| Electricity | £72.91 | £874.91 |
| Gas | £63.86 | £766.28 |
| Water* note | £88.75 | £1,065.00 |
| Total | £225.52 | £2,706.19 |
Calculated by SmartMoneyTools.co.uk
Typical household energy usage
The table below shows the average usage for a household according to Ofgem.
| 1-2 people | 2-3 people | 4-5 people | |
|---|---|---|---|
| Electricity (kWh) | 1,800 | 2,700 | 4,100 |
| Gas (kWh) | 7,500 | 11,500 | 17,000 |
- How does this calculator estimate my bills?
- It uses the region you select in Select Region, along with the Ofgem price cap tariff rates and the calculator's tariff inputs, to estimate your gas, electricity, and water costs in the results.
- How accurate are the estimates?
- Our calculator provides an estimate based on the information you input, Ofgem regional energy rates, and an indicative water estimate. However, actual bills may vary depending on your specific provider, tariff, and usage patterns.
- Can I compare different energy suppliers?
- While our calculator isn't designed to compare providers directly, you can use it to estimate your bills with different tariff rates. Open the tariff editor in the calculator to compare potential costs between providers.
- Where do the tariff rates for each region come from?
- The standing charges and unit rates used in Select Region and the tariff inputs are sourced from Ofgem's regional energy price cap data. These rates cover April 2026 to June 2026.
- How is the water bill calculated?
- The water bill is an indicative Southern Water-based estimate. It starts from Southern Water's April 2025 to March 2026 household-size examples, then uplifts those figures using Water UK's reported Southern Water average bill change for April 2026 to March 2027. Actual bills vary by water company, meter status, usage, and wastewater charges, so use the results as a guide.
- How often are the tariff rates updated?
- Ofgem reviews the energy price cap quarterly. The rates in this calculator are updated to reflect each new cap period. The current rates cover April 2026 to June 2026.
- How can I reduce my utility bills?
- Common approaches include improving energy efficiency, switching to a cheaper tariff, and reducing usage during peak times. The Electricity Cost Calculator can show which appliances are consuming the most energy, and the typical household energy usage table gives a quick benchmark.
Have you tried?
Is something wrong?
Or do you have a suggestion? Check the FAQ first, or send us a message:
Want to include your details? Use the contact page instead.