Skip to Calculator
PaintPro Calculator

Garage Paint Calculator

Garage walls benefit from durable, scuff-resistant paint that can handle everyday wear and tear. Our estimates below are for a standard two-car garage. Garages often have bare drywall or concrete block, so primer is strongly recommended for best coverage.

Advertisement

Pre-Calculated Paint Estimate

Paint Needed

6

gallons

This covers 684 square feet with 2 coats of standard paint.

Epoxy-based or garage floor paint recommended for durability. Standard latex works for walls.

View Detailed Breakdown
Wall Area: 720 sq ft
Deductions: -36 sq ft

Net Paintable Area: 684 sq ft
Base Coverage Rate: 400 sq ft/gal
Adjusted Coverage: 280 sq ft/gal
With 2 Coats: 1368 sq ft needed
+ 15% Waste Buffer: +0.73 gal

Based on a 20x20 ft room with 9-ft ceilings, 1 door(s), and 1 window(s). Paint at 400 sq ft/gallon with 15% waste buffer.

Customize This Calculation Adjust dimensions, texture, primer, and more

Tips for This Room

Ready to Start Your Project?

Everything you need to get professional results.

Epoxy Floor Paint

Professional-grade epoxy coating for garage floors that resists chemicals and tire marks.

Shop Floor Paint

Drywall Primer

PVA primer for new drywall in garages. Seals the surface for even paint coverage.

Shop Primer

Paint Supplies

Heavy-duty rollers, brushes, and trays for large garage painting projects.

Shop Supplies

Product links go to Amazon.com

Frequently Asked Questions

How much paint do I need for a 2-car garage?

A standard 20x20 two-car garage with 9-foot ceilings needs about 4-5 gallons for two coats on the walls. Add primer if the drywall is unpainted. Consider a 5-gallon bucket for the best value.

What kind of paint should I use in a garage?

Use interior latex paint with a satin or semi-gloss finish for garage walls. These finishes are more durable and easier to clean than flat paint. For garage floors, use a dedicated epoxy or concrete floor paint.

Do I need to prime garage walls before painting?

Yes, primer is strongly recommended for garages, especially if the drywall is new, bare, or unpainted. PVA drywall primer is the best choice for new drywall. Use a bonding primer for previously painted glossy surfaces.

Advertisement

Related Calculators

Basement Paint Calculator

Calculate paint needed for your basement. Moisture-resistant paint estimates wit...

20x20 Room Paint Calculator

Calculate exactly how much paint you need for a 20x20 foot room. Get accurate ga...

16x20 Room Paint Calculator

Calculate exactly how much paint you need for a 16x20 foot room. Get accurate ga...