Plan Every Room with Architectural Confidence
Every calculation executes securely inside your web browser. No external API delays, no trackers, and completely free forever.
1. Paint Calculator
Work out exactly how many litres or gallons of paint you need. Automatically deducts doors and windows, supports multiple coats and ceiling coverage.
2. Wallpaper Calculator
Find out how many rolls of wallpaper to order. Factors in total wall width, height, pattern repeats, and safety wastage allowances.
3. Tile & Flooring Calculator
Calculate the exact number of tiles and boxes needed for floors and walls. Covers wastage for straight, diagonal, or herringbone layouts.
4. Curtain Size Calculator
Determine exact rod lengths, panel fullness, finished drop lengths (sill, apron, floor), and total fabric metres to buy from the roll.
5. Rug Size Guide
Interior designer sizing formulas for living rooms, dining tables, and beds. Maps your room dimensions to standard store rug sizes.
6. 60-30-10 Color Palette
Turn any base colour into a harmonious 60% / 30% / 10% room scheme. Generates complementary, analogous, triadic, and monochrome hex codes.
7. AC Tonnage & BTU
Calculate exact cooling capacity (BTU/hr) and inverter AC tonnage required based on floor dimensions, ceiling height, and sunlight exposure.
8. Kitchen Backsplash Tile
Determine exact mesh mosaic sheets, subway tile counts, and carton boxes needed for countertop runs and range hood accent zones.
9. Gallery Wall Spacing
Calculate exact nail hanging centers, symmetrical side margins, and uniform designer gaps for 2 to 6 picture frames based on the 57-inch museum eye-level rule.
10. Wood Planks & Cost
Determine carton boxes, staggered plank cutting wastage, expansion perimeter clearances, and total material budget for hardwood and LVP.
11. Brick & Patio Pavers
Calculate total bricks, patio pavers, or interior thin-brick veneer units needed, including mortar mix bags for running bond and herringbone layouts.
12. Room Lighting (Lumens)
Calculate exact lumens, LED watts, and bulb distribution required for comfortable ambient light and task precision based on room activity.
Why calculate before you buy?
Buying too little material means emergency second trips to hardware shops and the severe risk of batch mismatch - where subsequent paint or tile batches show subtle shade variations. Buying too much wastes hard-earned money on surplus boxes that gather dust in your garage.
Each tool on DecorBrooks comes with complete formula transparency, worked mathematical examples, layout tips, and practical FAQs so you feel completely confident in your DIY home improvement projects.
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