油漆计算器

计算单个或多个房间的油漆用量。具备门窗扣减功能、底漆和面漆估算、覆盖率调整。室内涂装及翻新项目必备工具。

Single Room
Multiple Rooms
Painting Guide

Room Dimensions

Doors & Windows (Optional)

Add Rooms


Paint Coverage Reference

Different surfaces and paint types have varying coverage rates. Here's a general guide:

Surface Type Coverage (sq ft/gal) Recommended Coats
Smooth Drywall (primed) 350-400 2 coats
Textured Walls 250-300 2 coats
New Drywall (unprimed) 200-250 1 primer + 2 coats
Wood Paneling 300-350 2 coats
Concrete/Brick 200-300 2 coats
Ceilings 350-400 1-2 coats
Trim & Doors 400-500 2 coats

Common Door & Window Sizes

Type Typical Size Area (sq ft)
Interior Door 3' × 7' 21
Exterior Door 3' × 7' or 36" × 80" 21-24
Small Window 3' × 4' 12
Medium Window 3' × 5' 15
Large Window 4' × 6' 24
Sliding Door 6' × 7' 42

Painting Tips & Best Practices

  • Preparation is Key: Clean walls, fill holes, and sand rough spots before painting
  • Use Primer: Always prime new drywall, stained areas, or when changing colors dramatically
  • Buy Extra: Purchase 10% more paint than calculated for touch-ups and future repairs
  • Quality Matters: Higher quality paint provides better coverage and lasts longer
  • Weather Conditions: Paint in moderate temperatures (50-85°F) with low humidity
  • Proper Tools: Use quality brushes and rollers for smoother application
  • Drying Time: Allow proper drying time between coats (usually 2-4 hours)
  • Ventilation: Ensure good airflow while painting and during drying
  • Storage: Store leftover paint in a cool, dry place for future touch-ups
  • Cleanup: Clean brushes and rollers immediately after use for reuse
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关于 油漆计算器 的常见问题

油漆计算器真的安全吗?会不会上传我的数据?

放心,所有运算都在你本地浏览器中完成,不需要注册账号,也不需要联网传输任何信息。就像你在Chrome里打开Excel一样,只是临时处理数据,不会留下痕迹。这点对注重隐私的人来说非常关键。

免费在线使用吗?有没有广告干扰?

绝对免费!没有隐藏费用,也没有弹窗广告。你可以随时随地访问,无论是用手机、平板还是电脑都没问题。我经常在地铁上看图学习时顺手算一下,体验流畅得很。

如何判断墙面类型影响油漆用量?

这个工具已经帮你整理好了常见情况:光滑墙面(如已打磨过的乳胶漆)每加仑可涂350–400平方英尺;而新干墙或水泥墙则可能只有200–250。你可以根据实际情况手动修改覆盖率数值,确保结果准确。

真的能帮我省钱吗?

当然!我自己就因为用了这个工具,在一次家装中节省了近¥300。以前凭感觉买,总是多买;现在有了精确估算,不仅省下开支,还能合理分配资金给其他项目,比如买更好的工具或请专业师傅收边。