Construction Calculators
ArrayKit's construction calculators help you estimate materials and quantities for home and building projects — how much concrete, gravel or mulch you need by volume, the square footage of a room, roofing and tile counts, stair dimensions and the BTU capacity for heating or cooling a space. Each calculator runs entirely in your browser, so your measurements stay on your device and nothing is uploaded. They give quick planning estimates using standard formulas — always add a waste allowance and confirm quantities with your supplier or contractor before you order.
- コンクリート計算機 — スラブ・フーチング・円柱のコンクリート体積と袋数を見積もります。
- BTU計算機 — 部屋の冷暖房に必要なBTU容量を見積もります。
- 平方フィート計算機 — フィートまたはメートルで面積を計算、コストも見積もり。
- 階段計算機 — 段数・蹴上げ・踏面・側桁の長さを計算します。
- 屋根面積計算ツール — 設置面積と勾配から屋根面積・スクエア・束数を見積もる。
- タイル計算ツール — プロジェクトに必要なタイルと箱の数を計算します。
- マルチ計算機 — 花壇に必要な立方ヤードとマルチの袋数を見積もります。
- 砂利計算機 — 面積と深さから砂利の立方ヤード、立方フィート、トン数を見積もります。
よくある質問
- Do I need to install anything to use these construction calculators?
- No. Every construction calculator on ArrayKit runs directly in your browser, so there is nothing to install and the measurements you enter are processed locally on your device.
- Should I add extra material to the construction calculator estimates?
- Yes. These calculators give a baseline quantity; add a waste allowance (commonly 5–15% depending on the material and cuts) and round up, then confirm with your supplier before ordering.
- Do the construction calculators upload my measurements?
- No. All of the math happens in your browser, so the dimensions you type never leave your device or get uploaded to ArrayKit.
- Which construction calculators does ArrayKit offer?
- The category covers concrete, gravel and mulch by volume, square footage, roofing, tile and stair calculators, plus a BTU calculator for sizing heating and cooling.