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20+ Free Online Knitting Calculators

Have you ever wanted to know how much yarn you need to knit a project?  How many stitches should be cast on for a knitted project?

Knitting calculators are some of the most sought-after resources by knitters.  These calculators make knitting math easy because you do not have to calculate anything yourself.

Below is a round-up of free online knitting calculators.  These calculators can be very useful:

  • Knitting Yarn Calculator
  • Knitting Yardage Calculator
  • Hat Calculator
  • Substituting Yarn Calculator
  • Yards and Meters Conversion Calculator
  • Knitting Gauge Calculator
  • Sock Calculator
  • And More

Don’t forget to bookmark or pin this page because you never know when you will need a knitting calculator.

These knitting calculators are provided free by various websites.  If you have any questions about using the calculators, please contact the person in charge of the website. 

We have many other helpful calculators such as our Cross Stitch Calculators or Beadwork Calculators.  

20+ Free Online Knitting Calculators

Supporting Products and links: Some of the links below may be affiliate links. We make a small commission on sales through the affiliate links, at no extra cost to you. Thank you in advance for your purchase and your support! Please see our full Affiliate Statement for more information.

Armscye

This is a knitting calculator for set in sleeves. French Roast Design

Blanket Size Calculator

The blanket size calculator will help you determine the desired amount of stitches and rows you should knit or crochet to create a blanket with any stitch combination. Joy of Motion Crochet

Calculate chart/project size

This chart helps you to calculate the size of your finished project using a sample swatch of your crochet work. Stitch Fiddle

Free Yarn Yardage Calculator

Calculate the yardage needed to complete crochet or knit projects. Cozy Nooks Designs

Handy Knitting Calculators and Charts

Calculators and charts to convert between yards and metres, or if you're substituting yarn, calculate how much yarn you'll need for a project! Love Crafts

Hat Calculator

Super Simple Circular Hat Calculator Earth Guild

How Much Yarn? A Guide to Yardage Requirements

How Much Yarn? A Guide to Yardage Requirements #ad

This handy infographic reference sheet estimates the amount of yarn you will need for different types of Crochet or Knit projects. It lists many types of Lion Brand Yarn. Affiliate Link to Lion Brand Yarn

How To Calculate Yardage of Partial Skein

Calculate how much yardage is remaining on a partial skein of yarn. Through the Loop

Increase Stitches

How to evenly increase stitches across a row. Use this free online calculator. The Diet Diary

Increase Stitches Evenly Calculator

Sometimes your pattern tells you to increase evenly. Save the time of manually calculating by using this online free calculator. Knitgrammer

Interactive Sock Calculator

The sock calculator will help you calculate all of the stitches you need to knit a sock. Good Night Kisses

Kniterator

Use this calculator to customize your raglan pullover pattern. Kniterator

Knitting Calculator

Knitting Calculator #ad

This knitting calculator will help you estimate the total yarn needed to knit a project. The calculator uses the yarn thickness to determine how much is needed to knit socks, sweaters, hats, blankets, and more! Affiliate Link to Jimmy Beans

Knitting Calculators

How many stitches should I cast on a baby blanket (cast on calculator)? How many rows are needed to loom knit a man’s scarf (row count calculator)? How much yarn will I need to knit a queen-size blanket (project yardage calculator)? The Interactive Knitting Calculators are here to help! Good Knit Kisses

Knitting Gauge Calculator

This calculator will help you calculate stitches and rows when your gauge differs from the gauge specified on the pattern. Brenda A Bell Blog

Knitting Increase and Decrease Calculators

Use the calculators below to determine how to increase or decrease stitches evenly across your row or round of knitting. World Knits

Knitting Increase Calculator and Knitting Decrease Calculator

Plug in numbers to find determine how to evenly increase stitches across a row or round. Any Calculator

Knitting tools at Double Rake Knitting

Several calculators to aid in double rake knitting projects. Rake Knitting

Online Stitch Multiple Calculator

This online calculator will help you determine how many stitches you’ll need to get the required width while matching a stitch multiple. Edie Eckman

Sock Calculator

Print customized pattern instructions for knitting socks. Liz's Personal Page

Sock Calculator

A sock calculator for hand or machine knitting. Liz's Personal Page

Ten Stitch Calculator

With a couple of measurements from your gauge swatch, this two-way calculator can tell you how many rounds* you need to knit to reach the size you want, or you can tell it how many rounds you want to knit, and it will give you the finished size. This ingenious tool will help you design just the right layout for your blanket. Good Knit Kisses

Triangular Shawl Calculator

Here’s a little way to calculate the maximum number of rows you can work on a shawl (top down shawls only). Colourful Designs

Yarn Calculators

Click for gauge calculators, increase and decrease calculators or calculate how long it will take to crochet a project. Joy of Motion Crochet

Yarn Substitution Calculator for Projects

This calculator will help you figure out how much yarn is needed for your project when switching yarn types. The Crochet Crowd





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