Our story
Buildoraについて
Buildoraは建設業界向けの無料で実用的な計算機を作成します — 材料のトン数、面積、体積、コスト見積もり、現場でスマートフォンから素早く使えます。
Our Mission
登録不要、有料結果なし。新しい計算機は定期的に追加されます。
20+
Free Calculators
100%
Free, Always
15+
Languages
0
Login Required
Why Buildora?
Contractor-First Design
Every calculator is built around how tradespeople actually work — on-site, under pressure, with gloves on.
Mobile-First
Pixel-perfect on any screen. Whether it's a phone in the field or a laptop in the office, it just works.
Always Accurate
Formulas reviewed by industry professionals and validated against standard engineering references.
Lightning Fast
Instant results, no sign-up, no waiting. The fastest construction calculator on any device.
Globally Accessible
Available in 15+ languages with support for both imperial and metric units.
Completely Free
No subscription, no login, no hidden fees — ever. Every tool is free for every contractor.