Electricity Cost Calculator
Enter a known kWh total for a direct cost, or use one power value, one usage schedule, and your rate to estimate energy and cost.
Calculator directory
Free home energy, renovation, furniture and decor calculators
Choose a focused tool, enter your own local values, and review the formula, assumptions, and units behind the estimate.
Energy
Understand everyday energy costs
Choose Electricity Cost for one load and one schedule. Use Appliance Running Cost when you need a wattage lookup, duty cycles, and a combined monthly total for several appliances.
Appliance Running Cost Calculator
Build a list of appliances, choose or enter each wattage, apply individual duty cycles, and review their combined monthly cost.
Renovation
Plan renovation materials
Use Paint Quantity for rectangular-room wall area. Choose Flooring and Tile when material waste and rounding up to whole packs or tiles affect what you need to buy.
Paint Quantity Calculator
Calculate wall paint from rectangular room dimensions after subtracting openings, then account for coats, product coverage, and waste.
Flooring and Tile Calculator
Convert floor dimensions into adjusted area, include your waste allowance, and round the result up to whole packs or individual tiles.
Furniture & Decor
Plan furniture and finishing details
Select the tool that matches your decision: room and delivery-opening fit, rug clearance around furniture, or curtain rod, drop, fullness, and panel sizing.
Furniture Fit Calculator
Compare a furniture footprint and requested clearance with the room, then make a preliminary check against the delivery opening.
Rug Size Calculator
Use your furniture layout and dimensions to estimate a minimum rug size, then check whether that size fits inside the room.
Curtain Measurement Calculator
Enter window and panel measurements with rod extension and fullness to estimate rod width, finished drop, and whole panel quantities.
Compare the tools
Choose the right calculator
Start with the decision you need to make, then check that you have the required measurements or usage details.
| Calculator | Best for | Inputs needed | Result |
|---|---|---|---|
| Electricity Cost Calculator | One device or electrical load with a known power value | Power, daily use, active days, electricity rate | Daily, monthly, and annual kWh and cost |
| Appliance Running Cost Calculator | Comparing several household appliances together | Appliance wattage, schedule, duty cycle, electricity rate | Per-appliance and combined monthly cost |
| Paint Quantity Calculator | Planning wall paint for a rectangular room | Room dimensions, openings, coats, coverage, waste | Estimated paint volume after adjustments |
| Flooring and Tile Calculator | Buying flooring packs or individual tiles | Floor dimensions, product coverage or tile size, waste | Adjusted area and whole packs or tiles |
| Furniture Fit Calculator | Checking room clearance and a delivery opening | Room, furniture, clearance, and opening dimensions | Room fit, remaining space, and opening check |
| Rug Size Calculator | Sizing a rug around a sofa, table, or bed | Room, furniture, layout, and clearance dimensions | Minimum rug size and room-fit check |
| Curtain Measurement Calculator | Planning a rod, curtain drop, and ready-made panels | Window size, rod extension, fullness, panel width | Rod width, fabric width, drop, and panel count |