crochetguideProject planning
Crochet tools and calculators
Bring your pattern and a measured swatch. Keep the numbers in one place.
Draw a crochet chart
Crochet chart maker
Draw C2C, tapestry and filet charts and get the written rows. No account.
Turn a picture into a chart
Picture to crochet pattern
A photo or drawing as a C2C, tapestry or filet chart, sized from your gauge. Nothing is uploaded.
Count your rows
Crochet row counter: keep your place
Count completed rows or rounds with large controls, undo, a local saved count and an erase button. Nothing you count is sent anywhere.
Spread increases evenly
Crochet increase and decrease calculator
Distribute single-crochet increases or decreases across a row, showing how many stitches you start with and end with.
Plan your stripes
Crochet stripe planner: colors and row counts
Preview a repeating stripe sequence, divide the rows by color, then work out each color’s yarn and balls from a weighed row. Nothing is sent anywhere.
Fit a stitch repeat
Crochet stitch multiple calculator: include the edges
Find whole stitch repeats near your desired count, keeping fixed edge stitches and extra turning chains separate.
Convert a hook size
Crochet hook size chart and converter
Common sizes from 2 to 30 mm with US letters, old UK numbers and steel hooks. Tap your hook to mark it.
Check your gauge
Crochet gauge calculator
Check your tension, estimate finished size and plan stitch repeats.
Work out how many balls
How much yarn do I need?
Turn pattern yardage or a weighed swatch into a ball count.
Swap a yarn safely
Yarn substitution worksheet
Compare fiber, gauge, care and yardage before changing yarn.
Size a blanket
Crochet blanket size calculator
Foundation chain, rows, finished size and yarn for any blanket size, with a C2C mode.
Plan a hat crown
Crochet hat size calculator
A round-by-round crown and the height in rounds from a head size and your gauge.
Plan a temperature blanket
Temperature blanket planner
A city’s 2025 daily highs or your own, split into colors and rows.
Measure yarn left on a ball
Yarn remaining calculator
Weigh a part-used ball and see how many meters are left.