Paint Calculator App — How Much Paint Do I Need?

Every painter has been here: you're halfway through a job and you run out of paint. Now you're driving back to the store, hoping they can match the batch, and losing an hour you can't bill for. Or worse — you bought three extra gallons "just in case" and now they're sitting in your garage forever.

Paint Pro solves this by calculating exactly how much paint and primer you need for every room, every surface, every coat.

What Paint Pro Calculates

• Walls — square footage with door and window cutouts subtracted automatically.
• Ceilings — flat, popcorn, knockdown, and stipple textures with adjusted coverage rates.
• Accent walls — separate color, separate calculation.
• Trim, doors, and baseboards — calculated independently from wall paint.
• Primer — calculated separately based on surface conditions.
• Number of coats — adjustable per surface.

The Smart Mix Buying Guide

This is the feature painters love most. After calculating your total coverage, Paint Pro tells you exactly what cans to buy — how many gallons and how many quarts — to minimize waste and cost. No more guessing, no more over-buying.

Room-by-Room Breakdown

Add as many rooms as you need. Each room gets its own dimensions, ceiling type, accent walls, and trim count. The app generates a per-room breakdown and a combined purchase summary so you know exactly what to order for the whole job.

Free and Pro Versions

Paint Pro is free — unlimited rooms, full calculator, buying guide. Paint Pro Plus adds professional quoting, e-signature, invoicing, profit tracking, and supplier integration for $99/year.