Renovation calculators
AY INTERIOR DESIGN provides these calculators free of charge to help you avoid common mistakes: underestimating, overbuying, delays, and decisions made too late.
Calculate paint to buy
Risk without calculating: running out mid-job, different batches, extra cost.
Benefit: litres per wall, ceiling, total — optimized purchase.
Calculate tiles to buy
Risk without calculating: discontinued series, delays, underestimated cuts.
Benefit: m² + allowance + number of boxes by format.
Calculate flooring to buy
Risk without calculating: shortages, batch differences, forgotten cutting allowance.
Benefit: m² + allowance by installation type + number of packs.
Calculate skirting boards
Risk without calculating: unfinished detailing, extra store trips, forgotten cuts.
Benefit: linear metres + allowance + corners.
Calculate wallpaper
Risk without calculating: not enough rolls, misaligned pattern match, different lots.
Benefit: rolls by wall height + pattern repeat + allowance.
Calculate lighting (lumens / spotlights)
Risk without calculating: a room that’s too dim or too harsh, poorly distributed spotlights.
Benefit: lumen estimate + number of light points by room.
Important
These calculators provide a practical estimate to help avoid common mistakes. For a full project (plans, selections, coordination, finishing), you can request a quote.