Free tools

Free tools for vintage knitting: old needle sizes, tension to yarn weight, vintage yarn amounts, ease and fit, and which of our patterns suit your yarn.

• Which Vintage Knitting Patterns Suit My Yarn? Free Tension CheckerType in your tension and see which of our 1940s to 1980s knitting patterns we can write for your yarn, in your size.
• Old Knitting Needle Size Converter: UK, US, Metric & JapaneseConvert old UK and Canadian knitting needle sizes (000 to 19) to metric mm, US and Japanese sizes. Free chart for vintage patterns, with no-match cases marked.
• What Yarn Weight Is This Tension? Vintage Gauge CalculatorEnter a vintage pattern’s tension (gauge) in stitches per inch or per 10 cm and find the likely modern yarn weight, from 2-ply and 3-ply to DK and Aran.
• Vintage Yarn Calculator: Ounces to Modern Balls and MetresConvert a vintage pattern’s yarn amount in ounces to grams, metres and modern 25 g, 50 g or 100 g balls, with an honest range and an adjustment for your size.
• Will This Vintage Knit Fit? Free Knitting Ease CalculatorCompare your bust with a vintage knitting pattern’s finished bust to see the ease and how it will fit, from close to oversized. Includes notes on each decade.