Smart calculators and guides for your homehttps://wisiko.com/enhttps://wisiko.com/en/appliance-running-cost-calculator/https://wisiko.com/en/appliance-running-cost-calculator/Enter an appliance's wattage and daily use to get kWh and running cost per hour, day, month and year, using current US, UK or European electricity prices or your own rate.Thu, 08 Oct 2026 00:00:00 GMThttps://wisiko.com/en/concrete-calculator/https://wisiko.com/en/concrete-calculator/Work out how much concrete you need for a slab, footing or round post hole, with a waste allowance, in cubic yards or cubic meters, plus the number of 80 lb or 60 lb bags.Thu, 08 Oct 2026 00:00:00 GMThttps://wisiko.com/en/paint-calculator/https://wisiko.com/en/paint-calculator/Enter room size, doors, windows, coats and coverage to get the wall area, gallons (or liters) of paint needed and the cans to buy.Thu, 08 Oct 2026 00:00:00 GMThttps://wisiko.com/en/watts-to-amps-calculator/https://wisiko.com/en/watts-to-amps-calculator/Convert watts to amps or amps to watts for 120 V, 230 V, 240 V or three-phase supplies, and work out energy use in kWh. Formulas and worked examples.Thu, 08 Oct 2026 00:00:00 GMThttps://wisiko.com/en/appliance-energy-use-data/https://wisiko.com/en/appliance-energy-use-data/Median annual kWh for 36 household appliances, measured every 10 minutes in 100 homes (ADEME, 2023–2024): water heaters, fridges, routers, TVs, washers and more, with running costs.Thu, 08 Oct 2026 00:00:00 GMThttps://wisiko.com/en/electricity-prices-europe/https://wisiko.com/en/electricity-prices-europe/Average household electricity price per kWh in every EU country plus Norway and Liechtenstein, including all taxes, from Eurostat. Which countries pay the most and the least?Thu, 08 Oct 2026 00:00:00 GMThttps://wisiko.com/en/how-much-electricity-does-a-fridge-use/https://wisiko.com/en/how-much-electricity-does-a-fridge-use/A fridge-freezer uses about 268 kWh a year at the median in measured homes (ADEME), roughly 0.73 kWh a day: about $49 a year at the US average price or £71 under the UK price cap.Thu, 08 Oct 2026 00:00:00 GMThttps://wisiko.com/en/space-heater-running-cost/https://wisiko.com/en/space-heater-running-cost/A 1,500 W space heater costs about 27¢ per hour at full power at the US average electricity price, and a 2 kW heater about 53p per hour under the UK price cap. Calculator and examples.Thu, 08 Oct 2026 00:00:00 GMThttps://wisiko.com/en/cost-to-boil-a-kettle/https://wisiko.com/en/cost-to-boil-a-kettle/Boiling 1 liter of water takes about 0.1 kWh: roughly 3p under the UK price cap, 2¢ at the US average price. The physics, a full-kettle example and how to cut the cost.Thu, 08 Oct 2026 00:00:00 GMThttps://wisiko.com/en/how-many-bags-of-concrete/https://wisiko.com/en/how-many-bags-of-concrete/One cubic yard of concrete takes 45 bags of 80 lb or 60 bags of 60 lb QUIKRETE Concrete Mix. Formulas, a bag chart for common slabs and post holes, and when to order ready-mix.Thu, 08 Oct 2026 00:00:00 GMThttps://wisiko.com/en/how-much-paint-for-a-room/https://wisiko.com/en/how-much-paint-for-a-room/A 12 × 12 ft bedroom with 8 ft ceilings needs about 2.2 gallons for two coats on the walls. Step-by-step method, a chart by room size and the mistakes to avoid.Thu, 08 Oct 2026 00:00:00 GMThttps://wisiko.com/en/how-much-electricity-does-a-router-use/https://wisiko.com/en/how-much-electricity-does-a-router-use/An internet router/box used 76 kWh a year at the median in measured homes (ADEME), an average of about 9 W: roughly $14 a year at the US average price or £20 under the UK price cap.Thu, 08 Oct 2026 00:00:00 GMThttps://wisiko.com/en/watts-vs-kilowatt-hours/https://wisiko.com/en/watts-vs-kilowatt-hours/Watts measure power (how fast energy is used); kilowatt-hours measure energy (how much is used over time). Clear examples, conversions and how to read your electricity bill.Thu, 08 Oct 2026 00:00:00 GMT