使い方
A better estimate in three steps.
- 01
Measure the longest length and width of the room.
- 02
Use the coverage shown on one flooring pack.
- 03
Choose waste based on room shape and laying pattern.
ホーム・DIY
床材計算
Turn room dimensions into order area, pack count, estimated pieces, and material cost with a clear waste allowance.
01
数値を入力
入力すると結果がすぐ更新されます。
基本式
The math behind the result.
Packs = round up[(room area × (1 + waste rate)) ÷ coverage per pack]よくある質問
Useful before you decide.
What waste percentage should I use?
Use about 5% for simple square rooms, 10% for most installations, and 15% or more for diagonal patterns or rooms with many corners.
Does the estimate include underlayment?
No. Underlayment, trim, adhesives, transitions, and installation labor should be budgeted separately.
Should I measure closets?
Yes, include every floor area that will receive the same material.