Free crochet tools
Small calculators for the arithmetic that stands between an idea and a finished piece. They are free, they need no account, and — because this site has a pattern engine behind it — they answer with a pattern you can open and watch build in 3D, not just a number.
US to UK crochet termsA UK double crochet is a US single crochet. Paste a pattern and get it back in the other dialect — plus the full conversion chart.How much yarn do I need?Count a pattern's stitches exactly, then turn that into grams, metres and whole balls — calibrated from a project you have already made rather than a rule of thumb.Crochet pattern resizerMake an amigurumi bigger or smaller by rebuilding it on a wider base — every round rewritten exactly, and a straight answer when a pattern cannot be scaled.Crochet sphere calculatorA ball in the size you need: enter a finished diameter and your gauge, get every increase and decrease round — and open the pattern in 3D.
New to reading patterns at all? Start with the grammar — what the brackets mean, and how to use the count at the end of a round.
More will follow. If one of them would save you an evening, say so and it moves up the list.