Pattern grading (resize sizes)
Inches or % scale, quick size jumps, visual bars, stitch/row repeats, and a copyable summary.
Width → stitches (bust, hip, brim…)
Use real finished inches, or switch to Percent if you only know “about 10% bigger”—same math either way.
Many women's charts step the bust about +2″ per size—tweak to match your brand or schematic.
Length → rows (body, sleeve, crown…)
Inches for hem-to-underarm type math, or percent for “5% longer torso” without measuring tape.
Results
Stitches for target width
×1.111- Reference
- 80 sts / 36"
- Raw scaled
- 88.9 sts
- Use about
- 89 sts
Rows for target length
×1.167- Reference
- 24 rows / 12"
- Raw scaled
- 28.0 rows
- Use about
- 28 rows
Linear grading assumes your stitch and row gauge match the original pattern when you work the new size—same yarn weight, hook, and tension. Ease, drape, lace openings, and cables won't scale perfectly; use this as a starting point and always check fit on the body or a schematic.
Need stitches per inch first? Use the gauge calculator. Even shaping across a row: increase & decrease.
Pattern grading scales a design from one finished size to another—for example, growing a sweater circumference or lengthening a blanket. Instead of guessing stitch counts, you apply a ratio (or inch delta) to the original measurements and stitch/row totals.
This free calculator shows the scaled numbers with visual bars, optional repeat-aware rounding, and a copyable summary you can paste into notes or a pattern draft.
How to grade a crochet pattern size
- Enter the original finished measurement and the stitch or row count that produced it.
- Enter the target finished measurement (or use a quick size jump / percent scale if you are exploring options).
- Review the graded stitch/row estimate and bars; enable repeats if your motif must stay in full multiples.
- Copy the summary, then verify with gauge and a schematic—shaping, ease, and borders still need designer judgment.
Grading tips for makers
- Grade stitch-based widths and row-based lengths separately when gauge differs in each direction.
- Motifs and lace repeats often need rounding to a full repeat—use the repeat fields so counts stay pattern-legal.
- After grading, re-check increases/decreases with the even-spacing calculator if a round must stay balanced.
Frequently asked questions
- Is pattern grading the same as changing gauge?
- Not exactly. Grading scales a size; gauge changes how many stitches fit in an inch. Use both: grade the target size, then confirm with your swatch gauge.
- Can I grade amigurumi?
- You can scale panel widths or round stitch counts, but 3D shaping may need extra rounds or safety-eye placement tweaks beyond a linear scale.
- Do I need to pay to use this tool?
- No—pattern grading is free in the browser with no account required.
Gauge calculator · Increase & decrease · US ↔ UK terms · Free tutorials · All tools