Free calculators for knitting, crochet, weaving and spinning
About FiberTools
FiberTools puts everyday fiber-craft math in one place: yarn estimates, gauge conversions, stitch counts and project planning for knitting, crochet, weaving and spinning. The self-service calculators are free to use in a browser without an account. Results are planning aids, so makers should check their swatch, pattern and yarn label before committing to a project. Optional paid reviews and downloads are separate from the free calculators.
PlatformsWeb
✓ VerifiedOct 26, 2026
Key features
- Yarn estimates from project measurements
- Gauge and stitch-count calculations
- Weaving and spinning planning tools
- Free self-service calculators without login
Made by
Jason Ramirez
🏷️ Get an embeddable badge for FiberTools
Show it off on your own site — updates automatically, links back here.
Reviews
No reviews yet — be the first to share your experience.
Similar tools
SolveTutor
Calculators, to the decimal
autoBlogger for Shopify
The original automated AI blogging platform built specifically for Shopify.
Monarch Money
Modern personal finance made simple
Pixelto AI
Free realistic AI image generator — no sign-up; GPT Image 2 & Nano Banana
Fathom Analytics
Privacy-first website analytics
CSS Generator
Generate CSS for gradients, shadows, and more — visually