# AEMAcalc

AEMAcalc (https://aemacalc.com) is a free, ad-free calculator website for home improvement, energy, and DIY projects. It covers flooring, painting, wallpaper, roofing, concrete, insulation, energy costs, solar panels, heat pumps, smart home savings, and home finance. All calculators work in metric and imperial units and support multiple currencies. No sign-up required.

## Energy Calculators

- [Solar Panel Calculator](https://aemacalc.com/calculators/energy/solar-panel-calculator): Solar system size, savings and payback period
- [Quick Solar Panel Calculator](https://aemacalc.com/calculators/energy/solar-panel-simple): Quick solar panel count and payback estimate
- [Solar Battery Savings Calculator](https://aemacalc.com/calculators/energy/solar-battery-savings-calculator): Extra savings from adding a battery to solar panels
- [Home Battery Backup Calculator](https://aemacalc.com/calculators/energy/home-battery-backup-calculator): Backup duration, peak-shaving savings and payback
- [Heat Loss Calculator](https://aemacalc.com/calculators/energy/heat-loss-calculator): Heat loss through walls, roof and windows
- [Insulation Savings Calculator](https://aemacalc.com/calculators/energy/insulation-savings-calculator): Annual savings from upgrading insulation
- [Heat Pump ROI Calculator](https://aemacalc.com/calculators/energy/heat-pump-roi-calculator): Annual savings, payback and 20-year net return
- [Heat Pump Running Cost Calculator](https://aemacalc.com/calculators/energy/heat-pump-running-cost-calculator): Annual running cost vs gas, oil or direct electric heating
- [Quick Heat Pump Calculator](https://aemacalc.com/calculators/energy/heat-pump-simple): Quick heat pump running cost by home size and insulation level
- [HVAC Running Cost Calculator](https://aemacalc.com/calculators/energy/hvac-running-cost-calculator): Annual electricity cost and CO2 for AC and HVAC systems
- [Electricity Cost Calculator](https://aemacalc.com/calculators/energy/electricity-cost-calculator): Appliance running costs and bill estimates
- [Quick Electricity Cost Calculator](https://aemacalc.com/calculators/energy/electricity-cost-simple): Single-appliance running cost in seconds
- [Appliance Electricity Cost Calculator](https://aemacalc.com/calculators/energy/appliance-electricity-cost-calculator): Running cost per appliance — daily, monthly and annual, up to 8 devices
- [Standby Power Cost Calculator](https://aemacalc.com/calculators/energy/standby-power-cost-calculator): Annual cost and CO2 from devices left on standby
- [Dynamic Electricity Price Calculator](https://aemacalc.com/calculators/energy/dynamic-electricity-price-calculator): Compare peak, standard and off-peak tariffs — savings from shifting usage
- [Dehumidifier Running Cost Calculator](https://aemacalc.com/calculators/energy/dehumidifier-running-cost-calculator): Daily, monthly, seasonal and annual electricity cost of running a dehumidifier
- [EV Home Charging Cost Calculator](https://aemacalc.com/calculators/energy/ev-home-charging-cost-calculator): Annual EV charging cost and savings vs petrol or diesel
- [Window Energy Loss Calculator](https://aemacalc.com/calculators/energy/window-energy-loss-calculator): Annual heat loss through windows and savings from upgrading glazing
- [Home Energy Savings Calculator](https://aemacalc.com/calculators/energy/home-energy-savings-calculator): Combined savings from insulation, heat pump, solar, LED and thermostat
- [LED Strip Calculator](https://aemacalc.com/calculators/energy/led-strip-calculator): LED zones, PSU sizing and running costs
- [Air Conditioner Running Cost Calculator](https://aemacalc.com/calculators/energy/air-conditioner-running-cost-calculator): Annual electricity cost of running an air conditioner or heat pump in cooling mode
- [Quick Air Conditioner Calculator](https://aemacalc.com/calculators/energy/air-conditioner-simple): Quick AC running cost estimate by room size and usage
- [Underfloor Heating Cost Calculator](https://aemacalc.com/calculators/energy/underfloor-heating-cost-calculator): Annual running cost of electric underfloor heating by room size and tariff
- [Water Heater Cost Calculator](https://aemacalc.com/calculators/energy/water-heater-cost-calculator): Annual water heater electricity or gas cost and comparison across heater types
- [Boiler vs Heat Pump Calculator](https://aemacalc.com/calculators/energy/boiler-vs-heat-pump-calculator): Side-by-side annual cost comparison of a gas boiler vs an air source heat pump
- [Radiant Floor Heating Calculator](https://aemacalc.com/calculators/energy/radiant-floor-heating-calculator): Running cost and heat output of radiant floor heating systems

## Smart Home Calculators

- [Smart Thermostat Savings](https://aemacalc.com/calculators/smarthome/smart-thermostat-savings): Annual savings from smart heating control
- [Smart Home Energy Savings Calculator](https://aemacalc.com/calculators/smarthome/smart-home-energy-savings-calculator): Total annual savings from all smart home devices combined
- [Smart Lighting Savings Calculator](https://aemacalc.com/calculators/smarthome/smart-lighting-savings-calculator): Annual savings from switching to smart LED with automation
- [Smart Plug Savings Calculator](https://aemacalc.com/calculators/smarthome/smart-plug-savings-calculator): Standby power cost per device, annual saving from smart plugs, payback period

## DIY Calculators

- [Deck Calculator](https://aemacalc.com/calculators/diy/deck-calculator): Deck boards, joists and footings
- [Quick Deck Calculator](https://aemacalc.com/calculators/diy/deck-calculator-simple): Quick deck board count
- [Fence Calculator](https://aemacalc.com/calculators/diy/fence-calculator): Fence panels, posts and concrete
- [Quick Fence Calculator](https://aemacalc.com/calculators/diy/fence-calculator-simple): Quick fence panels and posts count
- [Concrete and Screed Calculator](https://aemacalc.com/calculators/diy/concrete-screed): Concrete and screed bags calculator
- [Quick Concrete Calculator](https://aemacalc.com/calculators/diy/concrete-screed-simple): Quick concrete volume and bag count
- [Opening Calculator](https://aemacalc.com/calculators/diy/opening-calculator): Doors, windows and wall openings
- [Quick Opening Calculator](https://aemacalc.com/calculators/diy/opening-calculator-simple): Quick net wall area estimate
- [Insulation Calculator](https://aemacalc.com/calculators/diy/insulation): Insulation packs and vapour barrier
- [Quick Insulation Calculator](https://aemacalc.com/calculators/diy/insulation-simple): Quick insulation pack count

## Flooring Calculators

- [Laminate Flooring Calculator](https://aemacalc.com/calculators/diy/laminate-flooring): Click-lock laminate with waste and underlay
- [Quick Laminate Flooring Calculator](https://aemacalc.com/calculators/diy/laminate-flooring-simple): Quick laminate area estimate
- [Generic Flooring Calculator](https://aemacalc.com/calculators/diy/flooring): All flooring types with waste factor
- [Quick Flooring Calculator](https://aemacalc.com/calculators/diy/flooring-simple): Quick flooring area with waste
- [Tile Calculator](https://aemacalc.com/calculators/diy/tile-calculator): Floor and wall tiles with grout lines
- [Quick Tile Calculator](https://aemacalc.com/calculators/diy/tile-calculator-simple): Quick tile count estimate

## Painting Calculators

- [Paint Walls Calculator](https://aemacalc.com/calculators/diy/paint-walls): Wall paint and bucket calculator
- [Quick Paint Walls Calculator](https://aemacalc.com/calculators/diy/paint-walls-simple): Quick wall paint estimate
- [Paint Ceiling Calculator](https://aemacalc.com/calculators/diy/paint-ceiling): Ceiling paint calculator
- [Quick Paint Ceiling Calculator](https://aemacalc.com/calculators/diy/paint-ceiling-simple): Quick ceiling paint estimate

## Wallpaper Calculators

- [Wallpaper Calculator](https://aemacalc.com/calculators/diy/wallpaper): Wallpaper rolls with pattern repeat
- [Quick Wallpaper Calculator](https://aemacalc.com/calculators/diy/wallpaper-simple): Quick wallpaper roll count

## Roofing Calculators

- [Roof Area Calculator](https://aemacalc.com/calculators/diy/roof-area-calculator): Pitched and flat roof area
- [Quick Roof Area Calculator](https://aemacalc.com/calculators/diy/roof-area-simple): Quick roof area estimate
- [Roof Material Calculator](https://aemacalc.com/calculators/diy/roof-material-calculator): Tiles, shingles and metal roofing
- [Quick Roof Material Calculator](https://aemacalc.com/calculators/diy/roof-material-simple): Quick tile and shingle count

## Finance Calculators

- [Home Renovation Cost Estimator](https://aemacalc.com/calculators/finance/home-renovation-cost-estimator): Full renovation budget by room and trade
- [Renovation ROI Calculator](https://aemacalc.com/calculators/finance/renovation-roi-calculator): Profit, ROI %, rental yield and payback period
- [Mortgage Calculator](https://aemacalc.com/calculators/finance/mortgage-calculator): Monthly repayments and amortisation schedule
- [Energy Upgrade ROI Calculator](https://aemacalc.com/calculators/finance/energy-upgrade-roi-calculator): Energy upgrade costs, annual savings, payback period and lifetime ROI
- [Home Renovation ROI Calculator](https://aemacalc.com/calculators/finance/home-renovation-roi-calculator): Home renovation ROI, resale value uplift and payback period
- [Solar Payback Calculator](https://aemacalc.com/calculators/finance/solar-payback-calculator): Solar panel payback period, lifetime savings and break-even year
- [Heat Pump Payback Calculator](https://aemacalc.com/calculators/finance/heat-pump-payback-calculator): Heat pump payback period, net savings and lifetime ROI vs existing heating
- [EV Charger Payback Calculator](https://aemacalc.com/calculators/finance/ev-charger-payback-calculator): Home EV charger payback period, lifetime net savings and ROI
- [Battery Payback Calculator](https://aemacalc.com/calculators/finance/battery-payback-calculator): Home battery storage payback period and lifetime ROI — grid arbitrage or solar + battery modes, with degradation modelling
- [Room Renovation Cost Calculator](https://aemacalc.com/calculators/finance/room-renovation-cost-calculator): Trade-by-trade planning estimate for renovating a single room, adjustable for renovation scope and local market cost level
- [Bathroom Renovation Cost Calculator](https://aemacalc.com/calculators/finance/bathroom-renovation-cost-calculator): Trade-by-trade planning estimate for a bathroom renovation — covers plumbing, tiling, electrical, waterproofing and add-ons including underfloor heating, wet room and freestanding bath

## Blog and Guides

- [What Uses the Most Electricity at Home](https://aemacalc.com/blog/what-uses-the-most-electricity-at-home): Breakdown of household electricity consumption by appliance category
- [How Much Does Standby Power Cost](https://aemacalc.com/blog/how-much-does-standby-power-cost): The real annual cost of leaving devices on standby
- [Is a Home Battery Worth It](https://aemacalc.com/blog/is-a-home-battery-worth-it): Analysis of home battery costs, savings and payback
- [EV Home Charging Cost](https://aemacalc.com/blog/ev-home-charging-cost-calculator): What it actually costs to charge an electric vehicle at home
- [How Many Solar Panels Do I Need](https://aemacalc.com/blog/how-many-solar-panels-do-i-need): Sizing a solar system for a typical home
- [Home Energy Savings: Best Upgrades Ranked](https://aemacalc.com/blog/home-energy-savings-best-upgrades-ranked): Data-driven ranking of energy upgrades by ROI
- [Heat Pump ROI: Is It Worth It](https://aemacalc.com/blog/heat-pump-roi-is-it-worth-it): Real-world heat pump costs, savings and payback analysis
- [How to Calculate Roof Area](https://aemacalc.com/blog/how-to-calculate-roof-area): Methods for measuring pitched and flat roofs
- [How to Calculate Roof Material](https://aemacalc.com/blog/how-to-calculate-roof-material): Estimating tiles, shingles and metal sheets for a roof
- [How to Calculate Tiles](https://aemacalc.com/blog/how-to-calculate-tiles): Tile quantity, grout and waste for floors and walls
- [Paint Calculator: How Much Paint Do You Need](https://aemacalc.com/blog/paint-calculator-how-much-paint-do-you-need): Coverage, coats and litres for walls and ceilings
- [How to Calculate Laminate Flooring](https://aemacalc.com/blog/how-to-calculate-laminate-flooring): Area, waste factor and pack quantities for laminate
- [How to Calculate Wallpaper](https://aemacalc.com/blog/how-to-calculate-wallpaper): Rolls, drops and pattern repeat for wallpapering a room
- [How to Calculate Wallpaper Rolls](https://aemacalc.com/blog/how-to-calculate-wallpaper-rolls): Step-by-step guide to counting wallpaper rolls
- [Renovation ROI: What Return Can You Expect](https://aemacalc.com/blog/renovation-roi-what-return-can-you-expect): Which home renovations add the most value
- [How Long Does a Home EV Charger Take to Pay Back](https://aemacalc.com/blog/how-long-does-a-home-ev-charger-take-to-pay-back): Home EV charger payback period, key cost drivers, and when it does and does not make financial sense
- [How to Estimate Home Renovation Costs](https://aemacalc.com/blog/how-to-estimate-home-renovation-costs): Room-by-room method for estimating renovation costs, labour vs. materials split, contingency planning
- [How Long Do Solar Panels Take to Pay Back](https://aemacalc.com/blog/how-long-do-solar-panels-take-to-pay-back): Solar panel payback period explained with real calculation examples
- [How Much Does It Cost to Run a Water Heater](https://aemacalc.com/blog/how-much-does-it-cost-to-run-a-water-heater): Annual running cost of electric, gas and heat pump water heaters
- [How Much Does Underfloor Heating Cost to Run](https://aemacalc.com/blog/how-much-does-underfloor-heating-cost-to-run): Annual running cost of electric underfloor heating by room size and tariff

## Important Notes

- All calculators are free to use with no account required.
- Metric (m², kg, litres) and imperial (ft², lbs, gallons) units are supported throughout.
- Supported currencies include USD, EUR, GBP, NOK, SEK, DKK, CAD and AUD.
- Results are estimates intended to guide planning — always verify quantities with a qualified professional before purchasing materials or undertaking major work.
- Energy prices and savings figures are illustrative. Actual results depend on local tariffs, climate, home size and usage patterns.
- AEMAcalc is published by AEMA calc and is updated regularly as new calculators are added.