Measure before you buy
Clear guidance behind every calculation.
Short, practical explanations of measurements, package coverage, waste, and the assumptions that change a project plan.
Walls, ceilings & openings
Paint
Calculate paint separately for each colour and finish
Group paint areas by the exact product, colour and finish before rounding cans. Use a worked example to avoid a misleading whole-house total.
How to measure a room for paint
Measure wall perimeter, height, ceilings, doors, and windows for a paint estimate you can audit.
How much paint does a gallon cover?
Compare gallon, five-gallon, quart, and litre paint coverage, then adjust label area for coats, porosity, and waste.
How much does a can of spray paint cover?
Estimate spray-paint cans from label coverage, coats, object geometry, surface texture, and overspray loss.
Do I need one coat or two?
Choose a realistic coat count based on colour change, surface condition, sheen, and product instructions.
How to subtract doors and windows
Decide which openings are worth subtracting and keep trim calculations separate.
Interior painting shopping checklist
Build a practical paint-day list covering preparation, protection, application, cleanup, and safety.
Rooms, tile & pattern waste
Flooring & tile
Tile box coverage: why nominal size is not enough
Use the exact tile carton coverage to turn a measured area into whole boxes, while keeping nominal size, actual dimensions and waste separate.
How to measure an irregular floor
Break an L-shaped or curved floor into auditable rectangles, triangles, and circles.
Choosing a flooring waste allowance
Set waste for straight, staggered, diagonal, and pattern layouts without hiding the assumptions.
Beds, depth, bags & bulk
Mulch, soil & gravel
Cubic yards to tonnes: ordering landscape materials
Convert a landscape volume into an estimated weight using the supplier’s bulk density, with clear units, an example and questions to ask before delivery.
Landscape depth and volume explained
Convert bed area and installed depth into bags, cubic yards, or cubic metres.
Bags versus bulk landscape delivery
Compare usable volume and total delivered cost instead of package sticker prices.
Slabs, footings, posts & steps
Concrete
Estimate concrete volume when the base is uneven
Split a slab into measured depth zones, calculate each volume and keep the allowance separate. Avoid using one shallow measurement for the whole order.
Concrete volume and bag yield
Translate form dimensions into concrete volume and compare bag sizes using label yield.
How to order ready-mix concrete
Plan a ready-mix order, ask about minimum and short-load charges, and confirm slump, volume, access, timing, and truck type.
Runs, posts, panels & gates
Fence
How to measure fence runs and gates
Turn a property sketch into straight runs, corners, gates, and auditable material quantities.
Fence post spacing explained
Understand target spacing, equalized sections, panel widths, and why field layout can change the count.
How many fence boards do I need?
Calculate fence-board or picket quantities from measured runs, actual board width, spacing, gates, layout style, and a stated waste allowance.