Sizing Table

for Knitting Needles and Crochet Hooks

  1. Bates and Boye knitting needle sizes are almost identical down the chart.
  2. Both Boye and Bates size increments are based on 1/4 millimeter or 10/1,000ths of an inch
    (a postcard is about 7/1,000ths of an inch)
  3. Boye and Bates each use a different measuring scale for their crochet hooks.
  4. Boye crochet hooks do not always accurately match the metric size stated on the package.
    (Noted in columns 5 & 6)
  5. Wood expands and contracts with humidity changes, so sizes will slightly vary. These changes are proportional to the thickness and will not noticeably affect the size of stitch.

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NOTE 3/13/2014: When I originally set up this table (many years ago), I measured the sizes of knitting needles with a micrometer. I have been making the knittng needles accurately to those sizes ever since.
Sometime in the interum, both Boye and Bates changed a few of the sizes to eliminate the 1/4mm jumps in needles above size 5. A quarter millimeter is the same as 1/100 of an inch
I just completed dowel for the shafts in the new sizes 6, 9 and 10. They are marked as "new" in the chart. Unless a customer specifically requests the "old" sizes, I will send the new sizes.
-----------------------------

An asterisk (*) denotes sizes stocked by Turn of the Century (we'll do our best anyway!)

NOTE: Turn of the Century crochet hooks are made in accordance with the ACTUAL Boye sizes

MM INCH KNITTING
NEEDLES

Bates & Boye

BATES BOYE

Crochet hooks (accurate shaft measurement)

BOYE

Crochet hooks (as stated on the package)

RED HEART YARN BEE
2.75 0.108 2.0 C D


3.00 0.118





3.25 0.128 3.0 D E D-3

3.50 0.138 4.0 E
E-4

3.75 0.147 5.0 F F * F-5

4.00 0.158 new 6 *



G-5
4.25 0.167 old 6.0 * G
G-6
G-6
4.50 0.177 7.0 *
G *


4.75 0.187





5.00 0.197 8.0 * H H * H-8 H-8 H-8
5.25 0.206 old 9 *




5.50 0.216 new 9 *
I
I-9
I-9
5.75 0.226 old 10 * J I *


6.00 0.236 new 10 *


J-10
J-10
6.25 0.246

J *


6.50 0.256 10.5 * K
K-10.5 K-10.5
6.75 0.266





7.00 0.276 *

K *


8.00 0.315 11.0 * L
N *
L-11 L-11
9.00 0.354 13.0 * M
9mm *
N M-13 M-13
10.00 0.394 15.0 * N P * P N-15 N-15
11.50 0.453 16.0 * P

P-16 P-16
12.50 0.492 17.0 *




13.00 0.513

13mm *



15.75 0.620

Q * Q

16.00 0.630 19.0 * Q



19.00 0.768
S S *
S

25.00 0.984
U U *
U


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