油漆計算器

計算單間或多間房間的油漆用量。具備門窗扣除功能、底漆與面漆估計、覆蓋率調整。是室內油漆與翻新工程的必要工具。

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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Frequently Asked Questions about 油漆計算器

我可以用油漆計算器來估計整棟房子的油漆量嗎?

當然可以!這個工具支援「多間房間」模式,你可以新增多個房間並分別輸入參數,系統會自動整合總面積與總用量。像是你要翻新三房兩廳的公寓,就可以逐間輸入,最後得出整體預算,非常適合規劃家庭裝修預算。

這個工具安全嗎?我的資料會被偷走嗎?

絕不會!這是最重要的部分:所有計算都在你的瀏覽器端進行,不會上傳任何資料到伺服器。即使你輸入的是敏感資訊(如薪水、學分),也不會有任何風險。這也是為什麼許多老師、財務顧問和建築師都願意推薦給學生與客戶使用的原因。

如何選擇合適的覆蓋率?是不是越高的越好?

不一定。覆蓋率取決於牆面狀況與油漆品質。例如: