What changes the answer
The price cap is a cap on rates for a typical default-tariff structure, not a cap on the total bill. Region, payment method, meter and consumption still matter.
GBGBP · en-GB
United Kingdom home calculators
Make standing charges, unit rates and Economy 7 timing visible in one UK calculation.
What people mix up
Property listings and trades often mix square feet, square metres, litres and imperial references. Use the document's unit and translate it explicitly.
Pain points covered
Decisions this pack helps you check
Turn daily standing charges into the correct billing-period amount.
Compare Economy 7 or another time-of-use split with a flat rate.
Estimate appliance and heating electricity without assuming a national tariff.
Convert room and property areas with the original unit preserved.
Available for UK
14 relevant calculators
Currency symbols are presentation only; enter the current plan, label or project values that apply to you.
Working shownEnergy bills & appliancesGlobal Appliance Electricity Cost Calculator
Estimate appliance energy and cost in your own currency from label watts, runtime and your electricity rate
Open calculator Working shownEnergy bills & appliancesEffective Electricity Bill Rate CalculatorSeparate fixed charges from energy charges and calculate both all-in and usage-only bill rates
Open calculator Working shownEnergy bills & appliancesElectricity Bill Change ExplainerExplain why an electricity bill changed by separating billing days, daily usage, effective usage rate and fixed charges
Open calculator Working shownEnergy bills & appliancesTime-of-Use Electricity Plan ComparisonCompare peak and off-peak energy charges with a flat-rate plan using the same electricity use
Open calculator Working shownEnergy bills & appliancesHome EV Charging Cost CalculatorEstimate wall energy, charging cost and cost per distance with visible charging losses
Open calculator Working shownEnergy bills & appliancesHeat Pump vs Resistance Heating CalculatorCompare electricity needed for the same useful heat using an editable heat-pump COP
Open calculator Working shownEnergy bills & appliancesAppliance Label Annual Cost CalculatorTurn the annual kWh on an official appliance label into annual and multi-year energy cost
Open calculator Working shownSolar, battery & backupSolar Self-Consumption Value CalculatorSeparate solar electricity used at home from exports and value each with its own rate
Open calculator Working shownSolar, battery & backupHome Battery Energy-Shift CalculatorEstimate deliverable shifted energy and gross rate-spread value after round-trip losses
Open calculator Working shownSolar, battery & backupGlobal Battery Backup Runtime CalculatorEstimate backup runtime from voltage, amp-hours, usable discharge, conversion efficiency and load
Open calculator Working shownHome projectsConcrete Volume Calculator — Metric & US UnitsCalculate rectangular concrete volume in cubic metres or cubic yards with explicit unit conversion and waste
Open calculator Working shownHome projectsPaint Quantity Calculator — Litres & GallonsEstimate paint from wall dimensions, openings, coats and the exact product coverage
Open calculator Working shownHome projectsFlooring & Tile Quantity CalculatorEstimate floor area, pieces and packs using metric or imperial dimensions and a visible waste allowance
Open calculator Working shownProperty & area unitsInternational Property Area TranslatorConvert standard property-area units while keeping the exact factor and both unit labels visible
Open calculator Independent verification
Full source library 10 official UK resources
These links help verify tariffs, labels, schemes, measurements and rules. Their inclusion is not an endorsement.
UKbills
Energy price cap unit rates and standing charges
Ofgem
Current regulator rates and regional standing-charge context.
Open official resourceUKbills
Energy price cap explained
Ofgem
Explains that the cap limits rates rather than the household's total bill.
Open official resourceUKbills
Understand electricity and gas bills
Ofgem
Official guide to common bill components.
Open official resourceUKbills
Economy 7 consumer guide
Ofgem
Time-of-use context for peak and off-peak comparisons.
Open official resourceUKconsumer
Energy Performance Certificates
UK Government
Official EPC overview for property-energy context.
Open official resourceUKbuilding
Building Regulations approved documents
UK Government
Current official guidance documents for England.
Open official resourceUKbuilding
Building regulations approval
UK Government
Explains approval responsibilities; quantity tools do not establish compliance.
Open official resourceUKsolar storage
Solar PV consumer guidance
Microgeneration Certification Scheme
Independent certification context for solar installations.
Open official resourceUKconsumer
Energy statistics
Department for Energy Security and Net Zero
Official UK energy-data collections.
Open official resourceUKappliances
Product energy labels
UK Government
Official product-labelling requirements and guidance.
Open official resource