Yarn weights and typical uses

UK Weight
US Equivalent
Typical Needle Sizes
Typical Use
1, 2 and 3 ply Lace, fingering 2-3.5mm Baby clothes, lace work and socks
4 ply  Sportweight, Baby 3-4mm Socks, lightweight tops and baby clothes
Double Knitting (DK)  Light Worsted 3.5-4.5mm Suitable for most garments
Aran Worsted, Fishermans, Afghan, Aran 4-5.5mm Warm thick jumpers
Chunky Bulky, Chunky, Rug 5.5-7mm Chunky, oversized garments
Super Chunky  Super Bulky 7-12mm Ideal for soft furnishings such as blankets and cushions
Big Mega Bulky 9-20mm Ideal for quick projects such as cushions and rugs

Knitting Needles Conversions

Metric (mm) 
Old (Imperial) UK Size
US Size 
2 14 0
2.25 13 1
2.75 12 2
3 11 -
3.25 10 3
3.5 - 4
3.75 9 5
4 8 6
4.5 7 7
5 6 8
5.5 5 9
6 4 10
6.5 3 10
7 2 -
7.5 1 -
8 - 11
9 - 13
10 - 15
12 - 17
16 - 19
19 - 35
25 - 50

Crochet Hooks Conversions

Metric (mm) 
Old (Imperial) UK Size
US Size 
2 14 -
2.25 13 B/1
2.5 12 -
2.75 - C/2
3 11 -
3.25 10 D/3
3.5 9 E/4
3.75 - F/5
4 8 G/6
4.5 7 7
5 6 H/8
5.5 5 I/9
6 4 J/10
6.5 3 K /10
7 2 -
8 0 L/11
9 0 M/13
10 0 N/15
11.5 - P/16

Knitting and Crochet Abbreviations



0 no stitch or row to be worked in this size beg beginning
* marks beginning of pattern repeats bpdc backpost double crochet
[] or () contains larger sizes or certain instructions cc contrasting colour
alt alternate ch chain
approx approximately cl cluster
beg beginning dc double crochet
bet between dec decrease
c contrast dtr double treble crochet
cb cable back fpdc front post double crochet
cc contrast colour hdc half double crochet
cf cable forward inc increase
cm centimetres lp(s) loop(s)
cn cable needle mc main colour
co cast on p picot
cont continue rep repeat
dec decrease by working 2 stitches together rnd round
DK double knitting rs right side facing you
dpn double-pointed needles sk skip
eor every other row st stitch
foll following ss or sl st slip stitch
folls follows sc single crochet
g gram sp space
g. st garter stitch, in other words, knit every row tog together
in inches tr treble
inc increase by working into front and back of stitch tr tr triple treble
incl Inclusive woh wool over hook
K knit ws wrong side facing you
K2tog knit 2 together yoh yarn over hook
kb knit through back of st (loop)    
kfb knit into front and back of stitch    
kwise by knitting the stitch    
lh left hand    
lt left twist    
m metre(s)    
m. st moss Stitch.    
m1 make a stitch by picking up horizontal loop lying before next stitch and working into back of it.    
M1L make 1 twisted to the left - increase by 1 stitch    
M1p make 1 purlwise - increase by 1 stitch    
M1R make 1 twisted to the right - increase by 1 stitch    
mb make a bobble    
mc main colour    
meas measures    
mm millimetres    
ms main shade    
no number    
oz ounces    
p purl    
p2sso pass two slipped stitches over    
P2tog purl 2 stitches together - decreases by one stitch    
P3tog purl 3 stitches together - decreases by two stitches    
patt pattern    
patt rep(s) pattern repeat(s)    
pb purl through back of st (loop)    
pfb purl into front and back of stitch    
PM place marker    
prev previous    
psso pass slipped stitch over    
pw purlwise (or as if to purl)    
pwise by purling the stitch    
rem remain (ing)    
rep repeat.    
rev st st reverse stocking stitch    
rh right hand    
rnd(s) round(s) - on a circular needle    
rs right side    
RT right twist    
S1K1 slip 1, knit 1    
sk skip    
sk2po slip 1 stitch, knit 2 stitches together, pass slipped stitch over - decreases by two stitches    
skpo slip 1 stitch, knit 1 stitch, pass slipped stitch over - decreases by one stitch    
sl slip    
sl st slip stitch    
SL1K slip 1 knitways    
sp space    
ssk slip one, slip one, knit the two slipped stitches together - decreases by one stitch    
ssp slip one, slip one, purl the two slipped stitches together through the back of the loops - decreases by one stitch    
st (s) stitch (es)    
st st stocking, or stockinette stitch; 1 row knit, 1 row purl    
tbl through back of loop (st)    
tog together    
wl fwd wool forward    
wrn wool round needle    
ws wrong side    
wyib with yarn in back    
yb yarn at back    
ybk yarn to the back    
yf yarn at front    
Yfwd yarn forward    
yo yarn over    
yon yarn over needle    
yrn yarn round needle (usually implies bring it from behind needle to in front)