Calcso

Calcso brings ISO-based engineering calculations into a single app for mechanical and manufacturing engineers. From tolerances and fits to chain and gear design, it speeds up everyday engineering work and turns results directly into technical drawings and CAD files.

FEATURES
• ISO 286 — Tolerances & fits: shaft/hole tolerances, fit types and deviation values.
• ISO 606 — Chain & sprocket: parametric chain and sprocket geometry.
• ISO 54 — Spur gears: module, tooth count and core gear parameters.
• ISO 2768 — General tolerances: linear, angular and geometric tolerance tables.
• Scientific calculator and unit converter across 11 categories.

DRAWING & EXPORT
• 2D technical drawings: automatic, dimensioned drawings from results (ISO 128 / 129-1).
• 3D model viewer: rotate and inspect the part.
• DXF export: 1:1 scale CAD file, open directly in your CAD software.
• PDF report: bilingual, shareable calculation report.

WHY CALCSO?
• Reliable formulas based on ISO standards.
• Turkish and English interface.
• Works offline; cloud sync is optional.
• Clean, fast, engineering-focused design.

PREMIUM (optional)
Ad-free use, custom themes and cross-device cloud history sync are unlocked with premium. Core calculators are free.

Calcso is an engineering aid; always verify results for critical designs against the relevant standard and engineering approval.