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🏗️ 混凝土用量计算器Concrete Calculator
计算楼板、地坪或圆柱所需混凝土体积（立方米、立方码），以及 80 磅/60 磅预拌袋数。Work out concrete volume for slabs, footings or round columns in m³ and cubic yards, plus 80 lb / 60 lb premix bags.
使用说明与常见问题How-to & FAQ
「混凝土用量计算器」是什么？What is the Concrete Calculator tool?
计算楼板、地坪或圆柱所需混凝土体积（立方米、立方码），以及 80 磅/60 磅预拌袋数。Work out concrete volume for slabs, footings or round columns in m³ and cubic yards, plus 80 lb / 60 lb premix bags.
如何使用「混凝土用量计算器」？How do I use the Concrete Calculator tool?
在「混凝土用量计算器」中，填写「形状」、「单位制」、「长度/直径」、「宽度(楼板)」、「厚度/高度」等参数，结果会随输入实时计算并显示在下方。In the Concrete Calculator: Fill in "Shape", "Units", "Length / diameter", "Width (slab)", "Thickness / height"; results are recalculated instantly as you type.
预拌袋出方量是怎么来的？Where do the bag yields come from?
按常见预拌混凝土包装标注：80 磅袋约 0.6 立方英尺，60 磅袋约 0.45 立方英尺；不同品牌略有差异，以包装为准。They are typical package yields: an 80 lb bag makes about 0.6 ft³ and a 60 lb bag about 0.45 ft³. Brands differ slightly, so check the bag.
需要加损耗吗？Should I add waste?
现场浇筑通常多备 5–10%，以应对模板变形、地基不平和洒漏。Ordering 5–10% extra is common to cover uneven subgrade, form bulging and spills.
「混凝土用量计算器」免费吗？需要注册吗？Is the Concrete Calculator free? Do I need an account?
「混凝土用量计算器」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Concrete Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.