Crochet Increase Spacing Calculator
Each increase adds one stitch when you work two stitches into one existing stitch. Spread the increases across the starting count, then check the final count before the next round.
No account needed. Calculations stay in your browser.
Enter values from 0 to 1,000,000,000. Positive measurements must be at least 0.001; stitch counts and repeats must be whole numbers.
Enter whole counts from 1 to 10,000. The final count must be between the starting count and twice that count.
- Increases needed
- 6
- Original stitches to increase in
- 5, 10, 15, 20, 25, 30
- Final stitch count
- 36
How the calculation works
Increases = final count − starting count. The k-th increase uses starting stitch floor(k × starting count ÷ increases). Work one stitch into every other starting stitch. Each listed position refers to the original row or round, not the growing new count.
Worked example
To go from 30 to 36 stitches, make 6 increases. Work two stitches into original stitches 5, 10, 15, 20, 25 and 30. Work one into each other stitch. Check 36 stitches at the end of the round.
Check before you start
This planner uses one extra stitch per increase and at most one increase in each original stitch. It is not a garment-shaping pattern. Follow the pattern for stitch type, turning chains and placement. Repeating the same increase positions each round can form corners; stagger them when the pattern calls for a smooth circle. Mark the start of the round.
These calculations use the dimensions you enter and the stated layout rules. They do not measure fabric shrinkage, yarn tension or your working pace.
Next steps
- How Many Chains for a Crochet Blanket?
- US vs UK Crochet Terms (and How to Read a Pattern)
- How Many Granny Squares for a Blanket?
- Open the crochet pattern generator
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