How do I convert inches to cm?
Converting cm to inch and inch to cm – Explained simply!
Sometimes we face the challenge of converting between centimeters (cm) and inches (inches). This happens not only when shopping, but also when crafting, crocheting, or knitting. Especially if you've ordered, for example, a great yarn from the USA or the UK and the measurements are given in inches, you'll need the conversion quickly. Don't panic – we'll make it as easy as possible!
How do I convert cm to inches?
So, if you want to know how many inches are in a given number of centimeters, you simply divide by 2.54. That means:
1 inch = 2.54 cm.
Converting cm to inch: To get from centimeters to inches, take the centimeter measurement and divide it by 2.54.
Example:
10 cm in inch?
10 ÷ 2.54 = 3.94 inch
Conversely, it's also very easy! If you want to convert from inches to centimeters, you multiply the inch measurement by 2.54.
1 inch = 2.54 cm.
Converting inches to centimeters: Simply take the inch measurement and multiply it by 2.54.
Example:
4 inches in cm?
4 × 2.54 = 10.16 cm
A handy conversion guide to take with you
- 1 inch = 2.54 cm
- 10 cm = 3.94 inch
- 20 cm = 7.87 inch
- 30 cm = 11.81 inch
And if you don't have a calculator handy, you can simply use conversion tables online or download a quick conversion app. That way you'll always keep track!
How do you choose the right knitting needle size?
Not only do the units of measurement differ internationally, but needle sizes are also sometimes specified differently .
In Germany and many European countries, knitting needles are given in millimeters (mm) , while in the USA and Great Britain needle sizes are given as numbers .
Basic rule:
- The needle size always depends on the yarn , not the other way around.
- The yarn label will give you a recommendation, e.g. needle size 4–5 mm .
- This information ensures that the stitch pattern is neither too loose nor too tight.
Needle size conversion
CYC yarn strengths: EU / US / UK comparison at a glance
Choosing the right needle size determines how even the stitch pattern will be and how the knitted piece will drape. The table will help you to confidently understand international needle sizes.
| CYC | Designation | EU needle size (mm) | US Size | UK Size | Typical projects |
|---|---|---|---|---|---|
| 0 | Lace | 1.5–2.25 mm | US 000–1 | UK 19–13 | Fine scarves, lace patterns |
| 1 | Super Fine (Fingering, Sock, Baby) | 2.25–3.25 mm | US 1–3 | UK 13–11 | Baby clothes, socks, light accessories |
| 2 | Fine (Sport) | 3.25–3.75 mm | US 3–5 | UK 10–9 | light sweaters, shirts |
| 3 | Light (DK) | 3.75–4.5 mm | US 5–7 | UK 9–7 | All-round sweaters, cardigans, hats |
| 4 | Medium (Worsted / Aran) | 4.5–5.5 mm | US 7–9 | UK 7–5 | Sweaters, jackets, home textiles |
| 5 | Bulky (Chunky) | 5.5–8 mm | US 9–11 | UK 5-0 | Winter hats, scarves, structured jackets |
| 6 | Super Bulky | 8–12 mm | US 11–17 | UK 0–000 | Chunky knits, statement pieces |
| 7 | jumbo | 12 mm and larger | US 17+ | UK 000+ | XXL blankets, oversize loops, arm knitting |
Principle:
First, stick to the needle size indicated on the yarn label. It is matched to the yarn thickness and ensures a harmonious stitch pattern.
How exactly do you find the right needle?
1. Pay attention to the running length:
- Fine yarns (e.g. 160–200 m/50 g) = 3–4 mm
- Medium yarns (120–150 m/50 g) = 4–5 mm
- Thicker yarns (80–100 m/50 g) = 5–7 mm
2. Knit a gauge swatch:
Always knit a small swatch to check if the size is correct.
3. Choose comfortable needles:
- Wood or bamboo : warm, light and ideal for beginners (such as the bamboo circular knitting needles from addi)
- Metal : smooth running, good for fast knitting (such as the Colibri needle set from addi )
- Circular knitting needles : suitable for almost any project, not just for circular knitting (such as Scandinavian-designed birchwood needles from Lykke )
Discover our wide range of great knitting and crochet needles!
