Free tool
Size chart calculator
Set your base size, points of measure and grade rules — get a complete graded size run with tolerances, ready to send to a factory.
Points of measure & grade rules
Graded size chart (cm)
| Point | ± Tol | XS | S | M | L | XL | XXL |
|---|---|---|---|---|---|---|---|
| Chest width | 1.0 | 53 | 55.5 | 58 | 60.5 | 63 | 65.5 |
| Body length HPS | 1.0 | 67 | 68.5 | 70 | 71.5 | 73 | 74.5 |
| Shoulder | 0.5 | 48 | 49 | 50 | 51 | 52 | 53 |
| Sleeve length | 0.5 | 58 | 59 | 60 | 61 | 62 | 63 |
| Hem sweep | 1.0 | 51 | 53.5 | 56 | 58.5 | 61 | 63.5 |
Size chart FAQ
What is a grade rule?
A grade rule is how much a point of measure changes between consecutive sizes. A 2 cm chest grade means each size up adds 2 cm to chest width. Grades are often non-linear at the extremes of a size run.
How do tolerances work?
Tolerance is the accepted variation a factory may deliver on a measurement, typically ±0.5 cm on small points and ±1.0–1.5 cm on chest, length and sweep.
Can I use inches?
Yes — switch units at the top. Values and grade rules are treated in whatever unit you select; the export records the unit.
Grade in 3D, not in a spreadsheet
Niche Studio AI runs non-linear grading, nested markers and fit heatmaps on your real patterns. Also see the tech pack generator.
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