Crochet Increase Calculator
Shape hats, amigurumi, and circles without lumpy clustering — get even increase or decrease spacing for any stitch count.
How the increase calculator works
- Find the difference. Total shaping stitches = target count − current count. Negative means decreases.
- Divide across rounds. Per round = difference ÷ shaping rounds, with the remainder spread over the first rounds so shaping stays even. Example: 30 → 60 over 6 rounds = 5 increases per round.
- Convert to spacing. Spacing = current count ÷ total increases, rounded down. With 30 stitches and 30 increases that is one increase every stitch; with 30 stitches and 6 increases it is one every 5 stitches.
Increase calculator FAQ
How do I calculate increases evenly across a crochet round?
Subtract your current stitch count from the target, divide by the number of shaping rounds, and space the increases evenly within each round. This tool does all three steps and reports the result as "inc every N sts" so you can follow it without doing arithmetic mid-row.
Can this calculator plan decreases too?
Yes. Enter a target count lower than your current count and the same even-spacing math applies — the instruction becomes "dec every N sts" across the shaping rounds.
What if my increases do not divide evenly?
The tool splits the remainder: some rounds get one extra increase, and it tells you exactly how many. Spacing those shaping rounds evenly across the piece keeps the fabric from tilting.
Why is the "every N sts" spacing not always shown?
When the number of increases in a round meets or exceeds your current stitch count, even spacing no longer makes sense — you would be increasing into almost every stitch. The tool then leaves the spacing out and just gives the per-round counts.