Yarn Math

Yarn Math

Knitting calculator

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Free
In-App Purchases

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Released
October 8, 2026
Updated
October 8, 2026
Yarn Math screenshot #1 for iPhone
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Want to use a different yarn for your pattern? Make the project your own, use yarn from your stash, or compare a cheaper alternative. Yarn Math helps you check the thickness match and estimate how much you’ll need. • Compare length and weight per skein. • Find which number of strands gives the closest thickness match. • Estimate how much yarn your project needs and how many skeins to buy. • Account for yarn you already have. • Compare two yarns held together with one yarn, in either direction. • Convert to meters per 50 g or yards per 1.8 oz. • Save calculations on your device. Add yarn names and prices to track costs and potential savings. • Choose your language and measurement units in Settings. Results are estimates based on the information you enter. Knit a gauge swatch before starting your project. A subscription is required to use the calculators. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://yarn-match-calculator.replit.app/privacy-policy
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What's New in Yarn Math

1.0

October 8, 2026

1

Subscriptions & In-App Purchases

Yarn Math

Yarn replacement, made easy

$0.991 Month
3 Days trial
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