What Size Is 4mm Knitting Needles? – helpful Facts

Wondering what size is 4mm knitting needles? They are one of the most popular sizes for knitters. They’re versatile and can be used for a wide range of projects, from hats to sweaters. If you’re new to knitting, 4mm needles are a great choice because they’re not too small or too large.

Choosing Your Knitting Needle: Sizes of Needles

4mm knitting needles are the most popular size of a knitting needle. They are perfect for beginners as they are easy to handle and create a nice, even stitch. 4mm needles can be used for a variety of projects, from simple scarves to more complex sweaters.

If you’re just starting out, 4mm needles are a great choice!

Knitting Needle Sizes Old And New

If you’re a knitter, you know that there are many different sizes of knitting needles. In the past, there were only two standard needle sizes – 4.5mm and 5.0mm. But nowadays, there are so many different brands and types of needles that it can be confusing to keep track of all the different sizes!

Here is a helpful guide to the most common needle sizes (old and new) so that you can pick the right size for your next project: 4.5 mm needles: These are the old standard-size needles. They are typically used for worsted-weight yarns or thicker yarns.

5.0 mm needles: Also an old standard size, these needles are slightly larger than 4.5mm needles and are typically used for bulky or chunky yarns. 6.0 mm needles: A newer needle size that is becoming more popular, 6.0mm needles can be used for worsted weight yarns or bulkier yarns such as chunky or super chunky yarns. 7.0 mm needles: Another newer size, 7.

What Size Is 4Mm Knitting Needles?

Credit: sheepandstitch.com

Knitting Needle Comparison Chart

2.0 mm014Lace/Superfine
2.25 mm113BLace/Superfine
2.5 mm1.5Lace/Superfine – Fingering/Fine
2.75 mm212CLace/Superfine – Fingering/Fine – Sport/Baby
3.0 mm2.511Lace/Superfine – Fingering/Fine – Sport/Baby
3.25 mm310DLace/Superfine – Fingering/Fine – Sport/Baby
3.5 mm4EFingering/Fine – Sport/Baby
3.75 mm59FSport/Baby – DK/Double-Knit
4.0 mm68GSport/Baby – DK/Double-Knit
4.5 mm77DK/Double-Knit – Worsted/Medium
5.0 mm86HWorsted/Medium
5.5 mm95IWorsted/Medium – Chunky
6.0 mm104JChunky
6.5 mm10.53KChunky
7.0 mm2Chunky
7.5 mm1Chunky
8.0 mm110LChunky – Super Chunky
9.0 mm1300Super Chunky
10.0 mm15000Super Chunky
12-12.75 mm17Super Chunky
15-16 mm19Super Chunky
19.0 mm35Super Chunky
20.0 mm36Super Chunky
25 mm50Super Chunky

What Are 4mm Knitting Needles In Old Size?

4mm knitting needles in the old size is equal to 3/16 needle size. The diameter of the 4mm knitting needle is slightly less than 1/8 inch.

What Uk Size Knitting Needles Are 4mm?

There is no definitive answer to this question as it depends on the manufacturer of the knitting needles. However, most UK size 4mm knitting needles will be equivalent to US size 6 needles which is a size 8 in the UK.

What Are Size 8 Knitting Needles In MM?

There is no definitive answer to this question as it can vary depending on the brand of knitting needles. However, a size 8 knitting needle is typically around 5 mm in width.

What Size Are Number 4 US Knitting Needles?

Number 4 knitting needles are 3.5 mm in size. This is the best size to use when using fingering/fine yarn.


4mm knitting needles are the most popular size for knitters. They are versatile and can be used for a variety of projects. In the US a 4mm knitting needle is considered a size 6, however, in the UK a 4mm knitting needle would be considered a size 8.


I’m Jane and I’m the editor of janesknittingkits.com! I am a long-time craft and clothing design fan who has been writing about these interests for years.

I have spent many hours studying knitting, weaving, sewing, embroidery, and quilting as well as learning about various brands and models of sewing gear and machines. In addition to this research, my work involves publishing information related to these topics in ways that will be informative for both amateur crafters like me and more experienced sewers!