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Baby Garment Calculator — Yarn and Sizing for Baby Knits

Calculate yarn requirements and stitch counts for baby garments based on age, measurements, and yarn weight.

Override the age default

Shoulder to hem

How We Calculate This

This calculator estimates yarn for baby garments using body and sleeve areas calculated from chest circumference and length, adjusted for yarn weight.

How it works

  • Body area: Chest circumference (with ease) x body length
  • Sleeve area: 33% of chest width x sleeve length x 2
  • Yarn: Total area x yarn weight factor

Frequently Asked Questions

Last updated: February 2026

All calculations are estimates based on standard yarn weights and gauge. Results may vary with individual tension, yarn brand, and needle size.