精密計算機

Multiple Rooms Square Footage Calculator — Add Rooms Instantly

Multiple Rooms Square Footage Calculator: Add as many rooms as you need, each with its own name, length, and width, and get the combined total square

複数の部屋

材料廃棄物係数オプション

材料費の見積りオプション

Calculation Results

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部屋、形状、素材、屋外エリア、単位換算など、プロジェクトに合わせて専用の計算機を選択してください。

部屋計算機 → 住宅計算機 → 寝室の計算機 → バスルーム計算機 → キッチン電卓 → Multiple Rooms → 長方形計算機 → 三角形の計算機 → 円計算機 → 台形計算機 → Regular Polygon Calculator → 不規則な形状 → Odd Shape → Uneven Sides → 床材計算機 → タイル計算機 → ペイント計算機 → 具体的な計算機 → 断熱計算機 → 芝生計算機 → ヤード計算機 → 造園計算機 → プール計算機 → ガレージ電卓 → 屋根計算機 → 壁計算機 → Feet & Inches → インチ計算機 → Height Width Length → 平方フィート 宛先 エーカー → Cubic Yards Calculator →
1 ft (12 in) 1 ft 1 ft² = 144 in²

Add and Sum Multiple Rooms Instantly

Select the Multiple Rooms shape to add unlimited room rows, each with its own optional name, length, and width. Click Add Room to add another row, or the × button to remove one. Click Calculate and the tool automatically sums every valid row into a single combined square footage — no manual addition required.

The Quantity field is hidden for this shape since each row already represents one room. For flooring or paint projects covering an entire home, add a row for every room and hallway, then use the Material Waste Factor and Estimate Material Cost sections for a complete project estimate.

仕組み

1

形状の選択

Choose the shape that matches your space.

2

寸法を入力してください

測定値を任意の単位で入力します。数量、廃棄係数、材料価格を追加します。

3

結果を取得する

面積 (ft²、in²、yd²、m²、エーカー) とコスト見積もりをすべて一度に表示します。

よくある質問

Select the Multiple Rooms shape, then enter a length and width for each room row. Click Add Room to add more rows — there's no limit. Click Calculate and the tool automatically sums every valid row into one combined total.
Yes — that's exactly what this calculator does. Each row has its own length and width, so a 10×12 bedroom and a 14×16 living room can be added in the same calculation without any manual math.
For flooring projects, yes — hallways need flooring too. Add each hallway as its own row (length × width) alongside your rooms. For room-only calculations like painting, you can leave hallways out.
Click the × button on the right side of any room row to remove it. The calculator always keeps at least one row available, and clicking Clear resets the list back to two empty rows.
Add a row for every room, hallway, and closet that needs flooring, then click Calculate for the combined area. Open the Material Waste Factor section and enter 5–15% to automatically include extra material for cuts and fitting.
No — the Quantity field is hidden for Multiple Rooms since each row already represents one room. If you need several identical copies of the same room, add one row per copy instead.
結果をコピーしました！