Original Summary

Free concrete calculator: enter length, width and thickness to get cubic yards, 80/60/40-lb bag counts and estimated cost — results update as you type.

  • 情报分类：综合情报
  • 分类依据：内容未命中明确的垂直分类规则，归入综合情报
  • 信息来源：Hacker News 新项目
  • 发布时间：2026/9/25 21:37:35