Know exactly how much to get, before you head out.

Latest guides

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  Detergent Dosage & Cleaning Dilutions

  Bleach to Water Ratio for Disinfecting: Calculate Any Dilution

  Bleach to water ratio for disinfecting: 5 mL bleach per 250 mL water for a mild solution, plus the formula, worked examples and safe mixing steps.

  Published October 31, 2026 · 7 min read

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  Tile & Flooring Quantities

  How Many Boxes of Laminate Flooring Needed? Step-by-Step

  Find out how many boxes of laminate flooring you need: measure the room, add a waste allowance for your layout, divide by box coverage and round up.

  Published October 31, 2026 · 7 min read

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  Concrete, Mortar & Brick Quantities

  How Many Bricks per Square Foot? A Wall Calculation Guide

  Calculate bricks per square foot for a wall: 6.86 modular, 6.55 non-modular at a 3/8 in joint, plus a worked example, openings and ordering tips.

  Published October 31, 2026 · 7 min read

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  Concrete, Mortar & Brick Quantities

  How Many Concrete Blocks for an 8 Foot Wall? Worked Count

  An 8 foot wall of standard 8 x 8 x 16 inch blocks needs 9 blocks per linear foot before waste. Learn the count, waste allowance and openings.

  Published October 31, 2026 · 7 min read

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  Adhesive, Grout & Sealant Quantities

  Grout Needed per Square Foot of Tile: Formula and Example

  Calculate how much grout you need per square foot of tile from joint width, joint depth and tile size, with a worked example and a 10% waste allowance.

  Published October 31, 2026 · 8 min read

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  Mulch, Soil & Gravel Quantities

  How Many Cubic Yards of Mulch for a Flower Bed?

  Learn how many cubic yards of mulch a flower bed needs, with the length × width × depth formula, a worked example, depth guidance and a settling margin.

  Published October 31, 2026 · 9 min read

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  Tile & Flooring Quantities

  How Many Floor Tiles Do I Need for 200 Sq Ft?

  For 200 sq ft of 12 × 12 in tiles, you need 200 tiles plus waste, about 220 at 10%. Formula, waste rates by layout, box counts and worked examples.

  Published October 31, 2026 · 8 min read

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  Drywall & Wall Panel Quantities

  How Many Sheets of Drywall for a Basement Ceiling?

  Work out how many drywall sheets a basement ceiling needs: measure the area, subtract openings, add about 10% for waste, then divide by sheet size. Worked

  Published October 31, 2026 · 8 min read

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  Wallpaper Roll Calculator

  How Many Rolls of Wallpaper for a 10 Foot Ceiling?

  Calculate how many wallpaper rolls you need for a 10 ft ceiling: measure the perimeter, count whole strips, add waste, and check the worked chart.

  Published October 31, 2026 · 8 min read