Money-Saving Calculators for Everyday Costs

See where your money goes, compare everyday choices and check which changes are worth making. Choose a free calculator for electricity, household budgets, home improvements or motoring, then replace the examples with your own figures.

How to use Money-Saving Calculators for Everyday Costs

1. Choose the question you want to answer from the four groups above. 2. Gather prices and usage for the same period. Use your energy bill, shopping receipt, meter readings or a written quote where possible. 3. Replace every relevant starting figure. Make sure pence have been converted to pounds when the field asks for GBP. 4. Compare the total, the breakdown and the assumptions. Change one input at a time to see what drives the answer. 5. Copy the result, download its graphic or create a share link. A share link contains your entered figures.

Why use this tool?

Start with the expense you can actually measure. If your electricity bill has risen, check an appliance or your meter readings before assuming one gadget is responsible. If shopping costs are the problem, compare unit prices and build a grocery budget. For bigger decisions, look beyond the headline price. A cheaper energy unit rate can come with a higher standing charge. A car with low fuel costs can still be expensive to own once depreciation and insurance are included. Solar panels and insulation involve an upfront cost, so use the payback tools with a quote and a realistic estimate of the yearly benefit. The directory groups closely related calculations together. The appliance calculator includes examples for heaters, kettles, gaming PCs, washing machines, dryers, dehumidifiers, fridges, TVs, electric blankets and standby use. The household budget also covers annual expenses and grocery spending, while one vehicle comparison brings petrol, diesel and electric energy costs together.

How the calculation works

Each calculator explains its own method beside the result. Electricity costs generally use kWh multiplied by a price per kWh; household and travel tools put costs onto a consistent period before comparing them. Charts help show the size of the differences, and chart values are available as a table. Results are estimates based on your inputs. They are not live supplier quotes, eligibility decisions or forecasts of future prices. Daily and monthly breakdowns are averages where the tool says so. Calculations run in your browser without a separate paid calculation service.

Example

A 2,000 W heater used for two hours a day over 180 days uses 720 kWh. At an illustrative £0.25 per kWh, its electricity costs £180. Reducing use to one hour a day would make that £90 under the same assumptions. The appliance calculator lets you change the power, season and rate to match your situation.

Practical tip

Compare options that do the same job. Include oven batches when cooking for several people, compare packs on a common weight or volume, and use an actual return journey when comparing driving with public transport. Keep fixed charges separate when they would still be paid after a change.