How do I convert inches to cm?
Converting cm to inches and inches to cm – Explained simply!
Sometimes we face the challenge of converting between centimeters (cm) and inches. This happens not only when shopping but also when crafting, crocheting, or knitting. Especially if, for example, you've ordered a great yarn from the USA or the UK and the measurements are given in inches, you'll quickly need to convert. Don't panic – we'll make it as simple as possible!
How do I convert cm to inches?
So, if you want to know how many inches are in a certain number of centimeters, you simply need to divide by 2.54. That means:
1 inch = 2.54 cm.
Converting cm to inches: To go from centimeters to inches, take the centimeter value and divide it by 2.54.
Example:
10 cm in inches?
10 ÷ 2.54 = 3.94 inches
The reverse is also very simple! If you want to convert from inches to centimeters, you multiply the inch value by 2.54.
1 inch = 2.54 cm.
Converting inches to cm: Simply take the inch value and multiply it by 2.54.
Example:
4 inches in cm?
4 × 2.54 = 10.16 cm
Small conversion aid to take with you
- 1 inch = 2.54 cm
- 10 cm = 3.94 inches
- 20 cm = 7.87 inches
- 30 cm = 11.81 inches
And if you don't have a calculator handy, you can also simply use online conversion tables or download a quick conversion app. This way, you'll always stay on top of things!
How to choose the right knitting needle size
Not only do units of measurement differ internationally, but needle sizes are sometimes indicated differently.
In Germany and many European countries, knitting needles are specified in millimeters (mm), while in the USA and Great Britain, needle sizes are given as numbers.
Basic Rule:
- Needle size always depends on the yarn, not the other way around.
- On the yarn label, you'll find a recommendation, e.g., needle size 4–5 mm.
- This indication ensures that the stitch pattern is neither too loose nor too tight.
Converting Needle Sizes
CYC Yarn Weights: EU / US / UK Comparison at a Glance
The correct choice of needle size determines how even the stitch pattern will be and how the knitted piece will drape. This table helps you to confidently classify international designations.
| CYC | Description | EU Needle Size (mm) | US Size | UK Size | Typical Projects |
|---|---|---|---|---|---|
| 0 | Lace | 1.5–2.25 mm | US 000–1 | UK 19–13 | Fine shawls, 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-around 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, textured 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, oversized loops, arm knitting |
Principle:
First, stick to the needle size indicated on the band of the knitting and crochet yarn. It is matched to the yarn thickness and ensures a harmonious stitch pattern.
How do you specifically find the right needle?
1. Pay attention to the yardage:
- 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 test piece to check if the size is correct.
3. Choose comfortable needles:
- Wood or bamboo: warm, light, and ideal for beginners (such as addi bamboo circular knitting needles)
- Metal: smooth glide, good for fast knitting (such as addi Colibri needle set)
- Circular knitting needles: suitable for almost any project, not just for knitting in the round (such as needles in Scandinavian design made of birch wood by Lykke)
Discover our wide range of great knitting and crochet needles!
