🏖️ 用沙量计算器（体积、重量、袋数）Sand Calculator (Volume, Weight, Bags)

使用说明与常见问题How-to & FAQ

「用沙量计算器（体积、重量、袋数）」是什么？What is the Sand Calculator (Volume, Weight, Bags) tool?

按矩形或圆形面积与铺设厚度计算用沙体积（m³、yd³、ft³）和重量（kg、lb、公吨、美吨），并按袋装规格算出需要多少袋。支持公制和英制，可选干沙、湿沙或自定义密度。本地处理。Sand volume (m³, yd³, ft³) and weight (kg, lb, metric tonnes, US short tons) for a rectangular or circular area at a given depth, plus the number of bags for a chosen bag size. Metric or imperial units, with dry, wet or custom density. Processed locally.

如何使用「用沙量估算」？How do I use the Sand Calculator (Volume, Weight, Bags) tool?

填写长、宽、厚（米）和密度，即可得到所需沙子的体积和重量。结果会随输入实时更新。Enter the length, width and depth in metres and the density to get the volume and weight of sand needed. The result updates as you type.

怎么计算？How is it calculated?

体积 = 面积 × 厚度（矩形面积 = 长 × 宽，圆形面积 = π × (直径 ÷ 2)²），重量 = 体积 × 密度，袋数 = 重量 ÷ 每袋重量并向上取整。例如 2 m × 2 m、厚 10 cm 是 0.4 m³，干沙约 640 kg，25 kg 一袋需要 26 袋。Volume = area × depth (rectangle area = length × width, circle area = π × (diameter ÷ 2)²), weight = volume × density, and bags = weight ÷ bag size, rounded up. For example, 2 m × 2 m at 10 cm deep is 0.4 m³, about 640 kg of dry sand, or 26 bags of 25 kg.

英制怎么用？How do imperial units work?

选英制后长、宽、直径按英尺，厚度按英寸输入，结果同时给出 yd³、ft³、lb 和美吨（2,000 lb）。例如 10 ft × 10 ft、厚 2 in 约 0.617 yd³。With imperial units, enter length, width and diameter in feet and depth in inches; results include yd³, ft³, lb and US short tons (2,000 lb). For example, 10 ft × 10 ft at 2 in deep is about 0.617 yd³.

密度用多少？Which density should I use?

干沙约 1,600 kg/m³（约 100 lb/ft³），湿沙约 1,920 kg/m³（约 120 lb/ft³）；实际值随颗粒、含水量和压实程度变化，可选自定义（500–3,000 kg/m³）。Dry sand is about 1,600 kg/m³ (about 100 lb/ft³) and wet sand about 1,920 kg/m³ (about 120 lb/ft³); real values vary with grain size, moisture and compaction, so you can enter a custom density (500–3,000 kg/m³).

能举个计算实例吗？Can you show a worked example?

例如在「用沙量计算器（体积、重量、袋数）」中填 单位制 = 公制（米、厘米），形状 = 矩形，长（m 或 ft） = 2，宽（m 或 ft） = 2，直径（圆形，m 或 ft） = 2，厚度（cm 或 in） = 10，结果区显示：面积：4 m² · 43.06 ft²；体积：0.4 m³ · 0.523 yd³ · 14.13 ft³；密度：1,600 kg/m³ · 99.9 lb/ft³；重量：640 kg · 1,411 lb；吨：0.64 公吨 · 0.705 美吨（short ton）；袋数：26 袋（每袋 25 kg，向上取整）；ℹ 沙的密度随含水量和压实程度变化，建议多备 5–10%。For example, entering Units = Metric (m, cm), Shape = Rectangle, Length (m or ft) = 2, Width (m or ft) = 2, Diameter (circle, m or ft) = 2, Depth (cm or in) = 10 in the Sand Calculator (Volume, Weight, Bags) gives: Area: 4 m² · 43.06 ft²; Volume: 0.4 m³ · 0.523 yd³ · 14.13 ft³; Density: 1,600 kg/m³ · 99.9 lb/ft³; Weight: 640 kg · 1,411 lb; Tonnes / tons: 0.64 t (metric) · 0.705 US short tons; Bags: 26 bags (25 kg each, rounded up); ℹ Sand density varies with moisture…

哪些输入会被检查？Which inputs are validated?

「用沙量计算器（体积、重量、袋数）」会检查这些输入——「长（m 或 ft）」、「宽（m 或 ft）」、「直径（圆形，m 或 ft）」、「厚度（cm 或 in）」、「自定义密度 kg/m³（选“自定义”时）」：必须填写，须大于 0；绝对值超过 10¹⁵ 的数也会被拒绝。不符合时结果区显示具体提示，不会给出数字。The Sand Calculator (Volume, Weight, Bags) checks its inputs — "Length (m or ft)", "Width (m or ft)", "Diameter (circle, m or ft)", "Depth (cm or in)", "Custom density kg/m³ (when Custom is chosen)": required, must be greater than 0; numbers above 10¹⁵ in absolute value are rejected too. When a value fails, the result area names the problem instead of showing a number.

有哪些选项可以调整？What options can I adjust?

「用沙量计算器（体积、重量、袋数）」的设置：「单位制」可选 公制（米、厘米）、英制（英尺、英寸）（默认 公制（米、厘米））；「形状」可选 矩形、圆形（默认 矩形）；「长（m 或 ft）」默认 5；「宽（m 或 ft）」默认 3；「直径（圆形，m 或 ft）」默认 2；「厚度（cm 或 in）」默认 5；「密度」可选 干沙 1,600 kg/m³（约 100 lb/ft³）、湿沙 1,920 kg/m³（约 120 lb/ft³）、自定义（默认 干沙 1,600 kg/m³（约 100 lb/ft³））；「自定义密度 kg/m³（选“自定义”时）」默认 1700；「每袋重量」可选 20 kg / 20 kg、25 kg / 25 kg、40 kg / 40 kg、50 lb / 50 lb、100 lb / 100 lb（默认 25 kg / 25 kg）。每次生成结果都按当前设置处理。Settings in the Sand Calculator (Volume, Weight, Bags) — "Units": Metric (m, cm), Imperial (ft, in) (default Metric (m, cm)); "Shape": Rectangle, Circle (default Rectangle); "Length (m or ft)" default 5; "Width (m or ft)" default 3; "Diameter (circle, m or ft)" default 2; "Depth (cm or in)" default 5; "Density": Dry sand 1,600 kg/m³ (about 100 lb/ft³), Wet sand 1,920 kg/m³ (about 120 lb/ft³), Custom (default Dry sand 1,600 kg/m³ (about 100 lb/ft³)); "Custom density kg/m³ (when Custom is chosen)" default 1700; "Bag…

换算系数准确吗？Are the conversion factors exact?

「用沙量计算器（体积、重量、袋数）」采用国际单位制（SI）或公认标准中的定义值作为换算系数，结果保留约 10 位有效数字。The Sand Calculator (Volume, Weight, Bags) uses factors defined by the SI or other recognised standards and shows about 10 significant digits.

「用沙量计算器（体积、重量、袋数）」免费吗？需要注册吗？Is the Sand Calculator (Volume, Weight, Bags) free? Do I need an account?

「用沙量计算器（体积、重量、袋数）」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 Sand Calculator (Volume, Weight, Bags) is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.