Does this use US or UK terms?

The copyable line uses common US phrasing (for example, “2 sc in next st” / “sc2tog”). Convert names with the US ↔ UK tool if you write UK patterns.

What if my stitch count does not divide evenly?

The calculator distributes remainders so spacing stays as even as possible—some gaps will be one stitch longer than others.

Is the increase/decrease tool free?

Yes. Use it without an account; explore tutorials for full projects that apply these shaping techniques.

Increase & decrease (even spacing)

Spread increases or decreases evenly with a visual row map and a copyable pattern line.

Stitches you have now (this row / round)

Stitches you want after this shaping row

We split plain single crochets as evenly as possible between increase or decrease points—same math many designers use for “evenly spaced” shaping.

+6 increases (24 → 30 sts)

Row map (read left → right)

3sc
2 in 1
3sc
2 in 1
3sc
2 in 1
3sc
2 in 1
2sc
2 in 1
2sc
2 in 1
2sc

Pattern-style line (US terms)

sc in next 3, 2 sc in next st, sc in next 3, 2 sc in next st, sc in next 3, 2 sc in next st, sc in next 3, 2 sc in next st, sc in next 2, 2 sc in next st, sc in next 2, 2 sc in next st, sc in next 2.

Assumes one single crochet per stitch except where noted (2 sc in one st, or sc2tog). If your pattern uses hdc/dc or front-loop-only, translate the counts—spacing stays the same.

US vs UK names? Term chart. Resizing a whole size? Pattern grading. Shaping a rectangle? See the gauge calculator.

Even increases and decreases keep circles flat, hats shaping smoothly, and sweater waists balanced. The classic approach spaces “inc” or “dec” stitches evenly across a round or row so you don’t cluster shaping in one spot.

Enter your current stitch count and how many increases or decreases you need. The tool maps where to work 2-in-1 or 2-together stitches and gives a copyable US-term line you can drop into a pattern or project notes.

How to space increases and decreases evenly

Count the stitches in the round or row before shaping.
Decide how many stitches you need to add (increases) or remove (decreases).
Read the visual map: it shows plain stitches between each shaping stitch.
Copy the written line, then work the round—mark the first stitch if you are crocheting in the round.

Shaping tips

For amigurumi spheres, increase every round in evenly spaced slots; this calculator helps when counts get awkward.
Place decreases toward the wrong side or underarms when possible so the right side stays smoother.
If you also change overall size, grade the pattern first, then recalculate shaping for the new stitch counts.

Frequently asked questions

Does this use US or UK terms?: The copyable line uses common US phrasing (for example, “2 sc in next st” / “sc2tog”). Convert names with the US ↔ UK tool if you write UK patterns.
What if my stitch count does not divide evenly?: The calculator distributes remainders so spacing stays as even as possible—some gaps will be one stitch longer than others.
Is the increase/decrease tool free?: Yes. Use it without an account; explore tutorials for full projects that apply these shaping techniques.

Pattern grading · Gauge calculator · Yarn yardage estimator · Free tutorials · All tools