Good for concept design and drawing nominal profiles. For inspection, use the standard tables. Title: Good start – please add these 3 things for 5 stars Rating: ⭐⭐⭐☆☆ (3/5)

Module and tooth count → correct pitch diameter, root and tip diameters for series B and N. The interface is straightforward.

✅ Matches DIN 5482-1:1970 for modules 0.5–10 mm ✅ Correct for major diameter centering (default) ❌ Does NOT include minor diameter centering tolerances ❌ No over-pin measurement (2‑ball size) – you’ll need a separate tool for that

The calculator does the basic geometry for DIN 5482 straight-sided splines correctly, but I found several gaps that prevent it from being a drop-in replacement for the official standard tables.