Estimate batt packs or rolls from wall, attic, or floor area—subtract openings, add waste, and round up to whole packages.
Area to insulate
Total length of walls to insulate (sum of wall runs).
Doors, windows, hatches, and other areas you will not insulate.
Product & coverage
Presets are typical package coverages—always use the sq ft (or m²) printed on your product label for the chosen R-value.
Use 2+ when stacking layers for higher R-value.
5–10% for simple rooms; 10–15% for odd cavities.
Insulation needed
Cost estimate
Enter a pack price to estimate material cost (excludes labor and vapor barrier).
This tool estimates quantity only. Choose R-value from local energy code and climate zone, and confirm cavity depth so batts are not compressed.
Formula
How to Calculate
Examples
关于此计算器
insulation计算器根据页面字段快速给出insulation结果—适合家庭与建筑项目。
即时结果
输入时结果会更新，便于比较insulation方案。
标准公式
计算按本页字段采用公认的insulation方法。
浏览器免费使用
任意设备可用，无需下载或账号。
- 快速规划
- 作业核对
- 估算
- 日常决策
常见问题
Quick answers about this calculator—how it works, accuracy, and everyday use.
是的。Online Calculator Spot上的insulation计算器免费，在浏览器中运行，无需账号。
可以。现代浏览器下insulation计算器适配手机。
insulation计算器按标准insulation公式给出可靠估算。
填写insulation计算器表单中的数值。数据越准，insulation结果越有用。
房主、学生、专业人士以及需要快速了解insulation的人。