Making a chunky knit blanket starts with a practical decision: what are you making, and how large should it be? When you are knitting a blanket with thick yarn, the material choice and quantity affect the finished project, so it is worth planning before you order.
This guide covers blanket size, chunky yarn families and quantity planning. It is not a stitch-by-stitch knitting pattern. For a quantity estimate based on your own dimensions, use the chunky yarn calculator.
The high-level process
- Choose the blanket dimensions you want.
- Choose your yarn or material and technique.
- Calculate the quantity for that material.
- Choose a colour and order the yarn.
- Work the chosen method until the blanket reaches your planned dimensions.
1. Choose Your Chunky Blanket Size
Choose the width and length before buying yarn. A small lap blanket, a sofa throw and a larger blanket are different projects, even when they use a similar technique. Write down the dimensions you want and keep the unit consistent while you plan.
StudioKnots’ reference examples can help you understand the scale, but they are examples rather than universal bed-size standards. For Cotton Tube Yarn, the reviewed references are approximately 80 × 100cm at 2kg and 90 × 150cm at 3kg. For Wool, the references include approximately 60 × 70cm at 1kg, 80 × 130cm at 2kg, 100 × 150cm at 3kg and 140 × 200cm at 5kg.
Before ordering, decide whether you want a personal throw, a sofa-sized project or a larger blanket, then calculate the quantity for that rectangle.
2. Choose the Right Yarn for Your Blanket
Different chunky yarns consume differently. The same blanket dimensions do not automatically require the same number of kilograms, so choose the yarn family first and calculate against that material.
Chunky Cotton Tube Yarn

StudioKnots’ Chunky Cotton Tube Yarn has a cotton outer tube with polyester filling. It is approximately 3cm thick and provides approximately 30m per 1kg. The product is suitable for arm knitting and hand knitting, and can also be used with 30–40mm needles. Current options run from 500g to 5kg across the catalogue’s colour and weight choices.
The Cotton reference examples are approximately 2kg for 80 × 100cm and 3kg for 90 × 150cm. They are useful reference points, not a universal formula for every stitch size, tension or finishing method.
Natural Wool

StudioKnots Wool is 100% natural wool and provides approximately 52m per 1kg. Its reference blanket sizes range from approximately 60 × 70cm at 1kg to 140 × 200cm at 5kg.
Do not transfer one material’s quantity directly to the other: their lengths per kilogram and blanket examples differ.
3. Calculate How Much Yarn You Need
Once you know your dimensions and material, you’re ready to calculate your yarn requirement.
Already know your blanket dimensions? Calculate how much yarn you need →
The calculator lets you choose Chunky Cotton Tube Yarn or Wool, enter width and length in centimetres or inches, and see an estimated requirement plus a recommended amount to order. Cotton Tube Yarn and Wool are calculated separately because the materials have different lengths, thicknesses and project requirements.
Treat the result as an estimate. StudioKnots reference examples are based on stated sizes, while real use can vary with stitch size, tension and finishing. If your dimensions fall outside the supported evidence range, the calculator may show that it cannot give a responsible quantity rather than inventing one.
4. Arm Knitting and Hand Knitting with Thick Yarn
Choose a technique that suits the material and the project you want to make. Cotton Tube Yarn supports arm knitting, hand knitting and use with 30–40mm needles. Wool has separate material-specific guidance, so calculate it using the Wool profile rather than treating it as interchangeable with Cotton.
5. Before You Start Your Blanket
Use this short checklist:
- Dimensions: record the width and length you want.
- Yarn family: choose Cotton Tube Yarn or Wool before calculating.
- Quantity: use the calculator and note the recommended total to order.
- Colour: choose a colour that suits the room or recipient.
- Technique: decide whether you will arm knit or hand knit and use the relevant material guidance.
Planning these details first gives you a clear size, material and quantity before you order.
Frequently Asked Questions
What is the best yarn for a chunky blanket?
There is no single best yarn for every project. Choose the material family that fits your technique and calculate its quantity separately.
How much yarn do I need for a chunky blanket?
It depends on the blanket dimensions and the yarn family. Enter both in the chunky yarn calculator instead of applying a universal kilograms-per-square-metre rule.
Can I arm knit a chunky blanket?
Cotton Tube Yarn supports arm knitting, hand knitting and 30–40mm needles. Wool has separate material-specific guidance for hand-knitted projects, so check the relevant material profile before you calculate and order.
Does Cotton Tube Yarn use the same amount as Wool?
Not necessarily. The reference examples show different lengths per kilogram and different blanket examples for the two materials. Use the calculator’s Cotton or Wool profile rather than transferring one estimate across materials.
What size should I make my chunky blanket?
Choose dimensions for the intended use. The StudioKnots reference examples in this guide are examples, not universal bed-size standards; calculate after choosing your own width and length.
Where can I buy the yarn for my project?
After calculating, you can shop Chunky Cotton Tube Yarn or shop Wool for hand knitting. Choose the material-specific product that matches your calculation.
