PaintSize Paint Calculator

PaintSize is a quick paint estimate calculator for rooms, walls, and small renovation jobs.

Enter wall dimensions, doors, windows, paint coverage, can size, and unit price to estimate paintable area, required paint, can count, and material cost.

FEATURES • Paintable area calculation — calculate wall area from width, height, and wall count • Door and window subtraction — subtract openings from the total area • Required paint amount — estimate liters of paint needed • Can count and cost — calculate cans and approximate material cost • Estimate history — save estimates and review them later • Adjustable defaults — set coverage, can size, unit price, coats, and waste rate • Japanese / English — switch languages in settings

PRO UPGRADE A one-time upgrade removes ads. No subscription.

WHO IT IS FOR Useful for DIY painting, room repainting, quick material checks, and on-site rough estimates.

All data is stored locally on your iPhone.