StitchMath

StitchMath is a curated set of free knitting and crochet calculators designed to help you stop guessing and get accurate results for real-world projects. Use its core Knitting Gauge Calculator to adjust patterns to your exact gauge, then explore specialized tools for decreases, yarn math, and fit-focused calculations.

The StitchMath AI Analyzer is powered by Llama 3 and acts as a precision fiber-arts engine for common planning and sizing tasks like gauge swatch help, yarn analysis for sweater projects, sock stitch count, and blanket yardage estimates. It’s built to support the math behind the work—not just general advice—so you can plan with confidence.

Beyond gauge adjustment, you can calculate evenly spaced increases/decreases, estimate yardage with the Yarn Estimator, plan blanket sizes and cast-ons, and handle yarn substitution by comparing yarns for a given project. StitchMath also includes conversion tools like US/UK/Metric needle size charts and WPI-to-standard yarn weight charts to keep your materials and measurements aligned.

What can I calculate with StitchMath?

StitchMath covers knitting and crochet math like gauge adjustment, evenly spaced increases/decreases, yarn substitution, yardage estimates, and sizing tools such as sock and blanket calculators.

How does the Knitting Gauge Calculator help?

It adjusts a pattern’s stitch counts to match your gauge, so you can align your finished measurements with your swatch results.

What does the StitchMath AI Analyzer do?

It analyzes common fiber-arts inputs—such as gauge swatch help, sweater-related yarn/gauge support, sock stitch count, and blanket yardage estimates—using Llama 3 as the engine.

Does StitchMath include unit conversions?

Yes. It offers a needle size chart that converts US, UK, and Metric (mm) sizes and includes a yarn weight chart for WPI to standard yarn weights.

Can I use StitchMath for yarn substitution?

Yes. The yarn substitution tool helps you compare and substitute yarns for a project, while keeping the relevant calculations connected to your pattern planning.

Are there tools specific to shaping and garment details?

Yes. Use calculators like evenly spaced increases/decreases and sleeve decrease to determine intervals for shaping, along with other sizing-focused utilities for common garments and accessories.