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Sherwin-Williams Paint Coverage Calculator

Sherwin-Williams sells several interior paint lines with different coverage, hide, and durability ratings. This preset uses 400 square feet per gallon as a planning value. Check the technical data sheet for the product and sheen you choose before buying.

This calculator is not affiliated with or endorsed by Sherwin-Williams. Coverage rates are based on published manufacturer specifications and may vary by product line, color, and surface condition.

Pre-Calculated Paint Estimate

2

gallons

Low 1.6 gal
Likely 1.7 gal
High 1.9 gal

This range covers 301 square feet with 2 coats. The likely estimate is 1.51 gallons before the selected buffer. If you are buying whole gallons, plan on 2.

View Detailed Breakdown
Wall Area:352 sq ft
Deductions:-51 sq ft
Net Paintable Area:301 sq ft
Base Coverage Rate:400 sq ft/gal
Adjusted Coverage:400 sq ft/gal
With 2 Coats:602 sq ft needed
+ 15% Waste Buffer:+0.23 gal

Based on a 12x10 ft room with 8-ft ceilings, 1 door(s), and 2 window(s). Paint at 400 sq ft/gallon with a 15% buffer.

See the formula and assumptions

Your paint run

12x10 ft room, 2 coats

Paint2 gal

Supplies for this room

Wall area 301 sq ft

Picked from the inputs above. Links go to Amazon and we may earn a commission at no extra cost to you. Details

Hiring a painter for this room usually runs $400 to $900, paint included. Prices vary with where you live and the condition of the walls. See how painters price a room.

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Flat or eggshell finish recommended for bedrooms. Low-VOC paint is ideal for better air quality.

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Paint Brand Coverage Comparison

Brand Coverage (sq ft/gal) Price Tier Calculator
Behr 400 $$ Calculate
Sherwin-Williams 400 $$$ You are here
Benjamin Moore 400 $$$ Calculate
Valspar 400 $$ Calculate
PPG 350 $$ Calculate
Glidden 350 $ Calculate
Rust-Oleum 350 $$ Calculate
Farrow & Ball 450 $$$$ Calculate

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Frequently Asked Questions

How much does Sherwin-Williams paint cover per gallon?

Sherwin-Williams interior paints cover approximately 350-400 square feet per gallon. Duration and Emerald lines may cover slightly more due to higher solids content. Always check the specific product data sheet.

Is Sherwin-Williams paint worth the price?

Sherwin-Williams is considered a premium paint brand. While more expensive than big-box brands, it offers superior coverage, durability, and color accuracy. Many professionals consider it the industry standard.

What is the best Sherwin-Williams paint for interior walls?

Duration and Emerald are their top interior lines. Duration offers excellent washability and durability, while Emerald provides advanced stain-blocking and one-coat coverage on many colors.

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