Energy & Home Calculators

Estimate your annual gas and electricity bills using Ofgem price cap rates. See monthly and daily costs.

Estimate your EPC rating and see which upgrades will improve it most. Includes costs and annual savings.

Calculate solar panel payback period, annual savings and 25-year return on investment.

Compare heat pump vs gas/oil boiler running costs. Calculate payback period and annual savings.

Calculate how much an appliance costs to run per day, week, month and year. Quick-select from common appliances.

Calculate how much you save by switching from old bulbs to LED. See payback period and annual savings.

Estimate your annual water bill for metered or unmetered supply including sewerage charges.

Compare old vs new boiler efficiency. Calculate installation cost, annual savings and payback period.

Calculate double glazing costs and annual energy savings by house type. See payback period.

Calculate daily electricity cost from individual appliances. Adjust usage hours for each device.

Compare energy costs between EPC bands. See annual savings from upgrading your rating.

Calculate how much you pay in standing charges alone. Compare zero standing charge tariffs.

Calculate annual gas bill from kWh usage, unit rate and standing charge.