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About Paint & Tile Estimator
Take the guesswork out of your home renovation with the Room Tiles & Paint Estimator, a smart, browser-based calculation tool designed for homeowners, interior designers, and contractors. Planning a room makeover often leads to overbuying expensive materials or, worse, running out mid-project. This dual-purpose calculator eliminates that stress by providing highly accurate, real-time estimates for both floor tiling and wall painting in one seamless interface. Unlike basic calculators that only give you raw square footage, this tool factors in real-world construction variables. For flooring, it automatically calculates the exact number of tiles needed based on your chosen tile size (with convenient presets like 600x600mm or 2x2ft) and adds a customizable wastage buffer for cuts and breakages. It even tells you exactly how many boxes to order based on the tiles-per-box metric. For painting, the tool goes a step further by intelligently deducting the area of doors and windows from your total wall space, ensuring you don't pay for paint you won't use. You can easily adjust the number of coats, customize the paint coverage rate, and even toggle an option to include the ceiling in your calculation. The tool then breaks down the total liters required and suggests practical purchasing options (1L, 4L, or 20L cans). Best of all, the entire tool is 100% private and runs locally in your browser. Your project details are never uploaded or tracked. With a convenient "Copy Summary" feature, you can instantly generate a clean, professional text report to share with your contractor, painter, or hardware store. Fast, accurate, and incredibly easy to use.
How to use Paint & Tile Estimator
- For Floor Tiles:
- Enter the Room Length and Room Width in feet.
- Select your Tile Size from the dropdown (or the tool will use the default 600x600mm).
- Adjust the Wastage % (10% is standard, but use 15% for diagonal patterns).
- Enter the number of Tiles per Box (check your supplier's packaging).
- Instantly view the total tiles needed and the exact number of boxes to purchase.
- For Wall Paint:
- Enter the Room Length, Width, and Height in feet.
- Input the number of Doors and Windows (the tool will automatically deduct ~21 sq ft per door and ~12 sq ft per window).
- Select the number of Coats you plan to apply (2 is standard).
- Adjust the Coverage rate if your specific paint brand differs from the 110 sq ft/L default.
- Check the "Include ceiling" box if you plan to paint the ceiling as well.
- Review the total paintable area, required liters, and suggested can sizes.
- Click "📋 Copy Summary" to copy the complete, formatted material list to your clipboard for easy sharing.
Frequently asked questions
Is this estimator free and private?
Yes, it is 100% free. All calculations happen locally in your browser, meaning your project details are never uploaded, tracked, or stored on any external server.
How does the tool calculate tile wastage?
It calculates the base number of tiles needed for the room's area, then adds your specified wastage percentage (e.g., 10%) to account for cutting, breakage, and future repairs.
Why are doors and windows deducted from the paint area?
You don't paint over doors and windows! The tool automatically deducts standard average sizes (21 sq ft for a door, 12 sq ft for a window) to give you a highly accurate, cost-saving paint estimate.
What is the standard paint coverage used in the calculation?
The default is set to 110 sq ft per liter per coat, which is the industry average for standard emulsion paints. You can easily adjust this in the "Coverage" field if your specific paint brand states otherwise.
Can I calculate for multiple rooms at once?
The tool is designed for single-room estimation for maximum accuracy. To calculate for multiple rooms, simply update the dimensions for the next room, note down the results, and add them together, or use the "Copy Summary" feature room by room.
Does the tool work on mobile phones and tablets?
Absolutely. The interface is fully responsive and touch-friendly, making it easy to use on-site at a hardware store or while measuring a room on your smartphone.
Why does the tool suggest different can sizes (1L, 4L, 20L)?
Buying paint in larger containers is usually more cost-effective. The tool breaks down your total liter requirement into practical purchasing combinations so you can choose the most economical option at the store.
Should I buy extra tiles even after the wastage calculation?
Yes, it is always recommended to keep 2-3 spare tiles from your final box for future repairs, as tile batches and colors can change over time.