Free Crochet Tools — Calculators, Generators & Charts
Free tools — the workshop bench
Crochet calculators, generators & charts
Eleven free tools built on the same round math we use to write every SageandSilky pattern. No signup, nothing stored — enter your numbers, get exact stitches, rounds, sizes and yardage.
Nº 01 — Amigurumi
Amigurumi Shape GeneratorSphere, egg, cylinder or cone → a written round-by-round pattern with counts and yardage.
Amigurumi Size CalculatorChange hook or yarn and know the finished toy size, yardage and stuffing before you start.
Amigurumi Yarn CalculatorMeters, yards and grams for a toy, part by part, with skeins and a 15% buffer.
Safety Eye Size CalculatorThe right eye size in mm for any head, kawaii to realistic, plus exact placement rounds.
Crochet Round Math CheckerPaste a pattern and audit every round: stitches used vs made, declared counts, repeats.
Nº 02 — Gauge, yarn & shaping
Crochet Gauge CalculatorFix tension, resize any pattern to your gauge, get exact stitch and row counts.
Yarn Yardage CalculatorGrams to yards and back, skeins to buy, for any yarn weight.
Crochet Increase CalculatorSpace increases or decreases evenly across any round or row.
Nº 03 — Reference charts & pricing
Crochet Hook Size Chartmm, US letters and UK sizes side by side, with the yarn weight each hook suits.
Yarn Weight ChartLace to jumbo: yards per gram, wraps per inch, hook range and typical gauge.
Craft Pricing CalculatorWhat to charge for a finished piece: materials, time, overhead and margin.
Ready to make something real?
Every SageandSilky pattern is written with this exact round math — numbered, tested, human-designed.
Nº 04 — Put the numbers to work