Engineering Calculators
Standards-based calculations with step-by-step derivation, formula sources, and explicit applicability limits.
ISO · ASME · VDI Standards
Every calculation references a published international standard or peer-reviewed engineering textbook.
Source of Truth
Built on Published Standards
No rule-of-thumb values. Every formula, constant, and safety factor is traced to ISO, ASME, VDI, or DIN standards, or a peer-reviewed textbook (Shigley's, Roark's, Machinery's Handbook).
Explore libraryEvery Field of Mechanical Engineering
Calculators organized by discipline — from fasteners and structural analysis to fluid systems and manufacturing.
プロフェッショナル機械設計のために構築
Every output includes the equation used, the source standard, and the conditions under which the result is valid.
Equation Shown
Formulas, symbols, and unit conventions remain fully transparent.
Source Identified
各手法で ISO、ASME、DIN、または Shigley 教科書を参照。
Limits Stated
Applicability, simplifications, and safety margins are explicitly noted.
内部確認済み
検証済み計算機ごとに検証例を公開。
機械工学専門プラットフォーム
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