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Estimating Knitting Gauge Using WPI. WRAPS PER INCH or by Yarn Size

This is meant to be a starting point for sampling. Machine and hand knitters need to sample, with at least 4" square. A difference of 1 stitch can add up to enormous size differences. Not all yarns fit nearly into a single category, but with adjustments to needle size you should get the correct gauge.

Standard Size British WPI Approx. Gauge Needle size approx. yd/oz. approx. yd/lb
Baby 3 ply   8-9 st/inch 1-2    
Fingering 4 Ply 16 wpi 7 st/inch 1-3 110-144 1700-2300
Sport DK 14 wpi 5 - 6 st/inch 4-6 75-110 1200-1600
Worsted Aran 12 wpi 4-5 st./inch 7-9 55-75 850-1100
Bulky   9 wpi 3-3 st./inch 10-11 30-55 500-900

Lace

Gauge Varies. Fine knitting or crochet.

Knitting Machine: Tension 3-4 on 4.5mm machine (standard bed)

Sock, Baby, Fingering 1500 + yds per lb.

14 wraps per inch. 94 yds+ per oz.

Needle size: 0-3 (2-3.25mm) Knit gauge 7 or more stitches = 1"

Crochet Hook size: D/3-E/4 Crochet gauge: 22-28 stitches = 4"

Machine Knit: Tension 7-8 on 4.5mm machine (standard bed)

Sport 1200-1600 yds per lb. 12 wraps per inch. 75-100 yds per oz.

Needle size: 4-6 (3.5-4mm) Knit gauge: 7 sts = 1"

Crochet Hook size: F/5-G/6 Crochet gauge: 16-20 sts = 4"

Machine Knit: Tension 9-10 on 4.5mm machine (standard bed)

Tension 3-6 on a 6.5 or 7.0 mm machine (mid-gauge bed)

DK Double Knit 1200-1600 yds per lb.

11 wraps per inch. 75-100 yds per oz.

Needle size: 5-7 (3.75-4.5mm) Knit gauge: 6 sts = 1"

Crochet Hook size: F/5-G/6 Crochet gauge: 16 sts = 4"

Machine Knit: Tension 5-7 on 6.5-7 mm (mid-gauge bed machines)

Tension 0-1 on 9mm (bulky bed machines)

Light - Medium Worsted 850-1150 yds per lb.

9 wraps per inch. 53-72 yds per oz

Needle size: 7-9 (4.5-5.5mm) Knit gauge: 5 sts = 1"

Crochet Hook size: H/8-J/10 Crochet gauge: 12-16 sts = 4"

Knitting Machine: Tension 5 on 9mm (bulky bed machines)

Tension 8-10 on 6.5-7mm (mid-gauge bed machines)

Heavy Worsted or Bulky 500-900 yds per lb. 31-56 yds per oz

7-8 wraps per inch

Needle size: 9-11 (5.5-8mm) Knit gauge: 4 sts = 1"

Crochet Hook size: K10 -L (7mm) Crochet gauge: 8-12 sts = 4"

Knitting Machine: Tension 7-9 on 9mm (bulky bed machines)

Standard Yarn Weight

Yarn Weight
Symbol &
Category
Names

Type of
Yarns in
Category
Sock,
Fingering,
Baby
3-Ply
Sport,
Baby
4-Ply
Light
Worsted
DK
Worsted,
Afghan,
Aran
Chunky,
Craft,
Rug
Bulky,
Roving
Knit Gauge
Range* in
Stockinette
Stitch to 4 inches
27–32
sts
23–26
sts
21–24
st
16–20
sts
12–15
sts
6–11
sts
Recommended
Needle in
Metric Size
Range
2.25—
3.25
mm
3.25—
3.75
mm
3.75—
4.5
mm
4.5—
5.5
mm
5.5—
8
mm
8 mm
and
larger
Recommended
Needle U.S.
Size Range
1 to 3
3 to 5
5 to 7
7 to 9
9 to 11
11
and
larger
Crochet Gauge*
Ranges in
Single Crochet
to 4 inch
21–32
sts
16–20
sts
12–17
sts
11–14
sts
8–11
sts
5–9
sts
Recommended
Hook in Metric
Size Range
2.25—
3.5
mm
3.5—
4.5
mm
4.5—
5.5
mm
5.5—
6.5
mm
6.5—
9
mm
9
mm and
larger
Recommended
Hook U.S.
Size Range
B–1
to
E–4
E–4
to
7
7
to
I–9
I–9
to
K–10 1⁄2
K–10 1⁄2 to
M–13
M–13
and
larger

* GUIDELINES ONLY: The above reflect the most commonly used gauges and needle or hook sizes for specific yarn categories

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