输入房间尺寸，自动扣除门窗面积，计算所需涂料桶数。支持多乐士、立邦等主流品牌规格。
Enter room dimensions, deduct doors and windows, get the exact tins needed. Supports common brand coverage rates.
常见问题
FAQ
墙面凹凸、刷具吸附和溢出都会消耗额外涂料。新墙损耗约5%，旧墙或粗糙面建议取10-15%。
Wall texture, brush absorption and spillage all consume extra paint. Allow 5% for smooth new walls, 10-15% for rough or old surfaces.
建议扣除，单扇门约1.9㎡，标准窗约2.1㎡，扣除后更精准，避免多买。
Yes. A standard door is ~1.9m², a window ~2.1m². Deducting them avoids over-buying.
新房精装通常底漆1遍+面漆2遍；旧房翻新建议3遍保证遮盖力。本工具仅计算面漆用量。
New builds: 1 primer + 2 finish coats. Repainting: 3 finish coats for good coverage. This tool calculates finish coats only.
支持地砖/墙砖，工字铺、斜铺等多种方式损耗自动计算，含门洞扣除。
Floor or wall tiles, with automatic waste by laying pattern and door deductions.
铺贴方式与损耗说明
Patterns & waste guide
最省料，瓷砖对齐铺设，适合大空间规则形状。
Most efficient. Tiles aligned in a grid, best for large regular spaces.
视觉更活泼，但边角切割多，损耗增加明显。
Dynamic look but corner cuts increase waste significantly.
同批次瓷砖色号一致，日后修补难以找到完全匹配批次，建议多购5%留存。
Tiles from the same batch match perfectly. Future repairs may not match, so keeping 5% spare is strongly recommended.
支持花型循环对纹损耗计算，结果比普通计算器更准确。
Accounts for pattern repeat waste — more accurate than basic calculators.
壁纸花型对纹说明
Understanding pattern repeat
图案重复出现的间距。相邻条幅需要对齐花型，产生额外裁切浪费。
The vertical distance before the design repeats. Adjacent strips must align, causing extra cuts and waste.
错位对花每隔一条错半个花型，损耗比直对花更多，最高可达30%。
Half-drop offsets alternate strips by half a repeat — can add up to 30% more waste than straight match.
素色或纹理壁纸（循环填0）只需3-5%基础损耗，是最省料的选择。
Plain or textured paper (repeat=0) needs only 3-5% basic waste — the most economical choice.
根据房间周长扣除门洞宽度，计算踢脚线所需米数与购买根数。
Room perimeter minus door openings — get exact linear metres and pieces to buy.
踢脚线安装知识
Installation tips
门洞处不安装踢脚线，扣除后准确计算用量，避免浪费。通常门洞两侧各留2-3cm收口。
No baseboard is installed across doorways. Deducting gives accurate quantities. Leave 2-3cm at each side for the return.
市场常见长度2.4m/根，高度60mm/80mm/100mm。材质有PVC、实木、铝合金。
Standard: 2.4m per piece. Heights: 60/80/100mm. Materials: PVC, solid wood, aluminium.
每个阳角需要45°斜切，会产生额外损耗。转角超过4个建议损耗取10%以上。
Each external corner needs a 45° mitre cut, adding waste. More than 4 corners? Use 10%+ waste factor.