免费涂料覆盖面积计算器
根据面积和涂刷遍数计算所需的涂料用量，免费涂料计算器即时获得结果。
Standard interior latex covers ~350 sq ft/gal
所需加仑数
3 gallons
Gallons Needed vs Coverage Rate
公式
## How to Calculate Paint Coverage ### Formula **Gallons = (Area × Number of Coats) / Coverage Rate** Standard interior latex paint covers approximately 350-400 sq ft per gallon. Factors that reduce coverage include rough or textured surfaces, porous substrates, and dark-to-light color changes.
计算示例
Painting 400 sq ft of wall area with 2 coats at 350 sq ft/gallon.
- 01Total coverage = 400 × 2 = 800 sq ft
- 02Gallons = 800 / 350 = 2.29 → 3 gallons
常见问题
How much wall does a gallon of paint cover?
A gallon of standard interior latex paint covers 350-400 square feet on smooth surfaces. Textured or porous surfaces may reduce coverage to 250-300 sq ft per gallon.
Do I always need two coats?
Two coats is recommended for most situations, especially when changing colors. One coat may suffice when repainting the same or very similar color with high-quality paint.
How do I account for doors and windows?
Subtract approximately 21 sq ft per standard door and 15 sq ft per standard window from your total wall area. Use the Paint Gallons Calculator for automatic deductions.
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