Rubber Band Size Calculator

Rubber Band Size Numbers

A rubber band is assigned an industry-standard number based on its dimensions. Most people are not familiar with this numbering system. 

Generally, rubber bands are numbered from smallest to largest, with width first. Thus, rubber bands numbered 8–19 are all 1⁄16 inch wide, with lengths going from 7⁄8 inch to 3-1⁄2 inches. Rubber band numbers 30–35 are for widths of 1⁄8 inch, going again from shorter to longer. For even longer bands, the numbering starts over for numbers above 100, again starting at width 1⁄16 inch.

To view the Rubber Band Standard Size Chart you can view our handy PDF here. Otherwise, use the Rubber Band Size Calculators below.

Standard Rubber Band Sizes are used industry-wide and can be found at most retailers. However, custom sizes will require the help of a rubber band manufacturer. While using the calculators below, if you see an asterisk (*) at the end of your results, this indicates a custom rubber band size. For more information about rubber bands manufactured in the USA, please contact us.

Search By Size Number




Results:

Flat Length
Size Number
Cut Width
1N/A
2N/A
3N/A
4N/A
5N/A
6N/A
73/41/16*
87/81/16
911/16*
101-1/41/16
111-1/21/16*
121-3/41/16
13N/A
1421/16
15N/A
162-1/21/16
172-3/41/16
1831/16
193-1/21/16
2041/16*
214-1/21/16*
2251/16*
235-1/21/16*
2461/16*
267/81/8*
271-1/41/8
281-1/21/8*
291-3/41/8*
3021/8
312-1/21/8
3231/8
333-1/21/8
3441/8*
354-1/21/8*
3651/8*
375-1/21/8*
3861/8*
396-1/21/8*
4023/16*
412-1/23/16*
4233/16*
433-1/23/16*
4443/16*
454-1/23/16*
4653/16*
477/83/16*
4863/16*
491-1/43/16*
50N/A
516-1/21/16*
538-1/21/16*
54Asst.Asst.
567/81/4*
571-3/41/4
582-3/41/4*
591-1/41/4*
601-1/21/4*
6121/4*
622-1/21/4
6331/4
643-1/21/4
6541/4*
664-1/21/4*
6751/4*
685-1/21/4*
6961/4*
701-1/23/8*
7123/8*
722-1/23/8*
7333/8
743-1/23/8
7543/8*
764-1/23/8*
7753/8*
785-1/23/8*
7963/8*
801-1/21/2*
8121/2*
822-1/21/2
8331/2*
843-1/21/2
8541/2*
864-1/21/2*
8751/2*
885-1/21/2*
8961/2*
901-3/43/4*
9123/4*
922-1/23/4*
9333/4*
943-1/23/4
9543/4*
964-1/23/4*
9753/4*
985-1/23/4*
9963/4*
100N/A
10171*
1028-1/21*
10335/8*
10445/8*
10555/8
10665/8*
10775/8
10921*
1101-1/21*
1111-3/41*
1122-1/21*
11331*
1143-1/21*
11541*
1164-1/21*
1185-1/21*
11961*
1201-1/45/64*
1211-3/45/64*
12225/64*
1232-1/25/64*
12435/64*
1253-1/25/64*
12645/64*
12775/64*
1281-1/43/32*
1291-3/43/32*
13023/32*
1312-1/23/32*
13233/32*
1333-1/23/32*
13443/32*
13553/32*
1365-1/23/32*
13763/32*
13873/32*
1398-1/23/32*
1428-1/21/8*
1437/83/64*
1441-1/43/64*
1451-3/43/64*
14623/64*
1472-1/23/64*
15073/16*
1511-1/45/8*
1528-1/23/16*
1531-1/25/8*
1541-3/45/8*
15525/8*
1563-1/25/8*
1574-1/25/8*
1585-1/25/8*
1598-1/25/8*
1601-1/25/16*
16125/16*
1622-1/25/16*
16335/16*
1643-1/25/16*
16545/16*
16655/16*
16775/16*
16813/8*
1691-1/43/8*
17071/4*
1711-3/43/8*
1728-1/21/4*
1732-3/43/8*
1764-1/25/64*
1777/81/2*
17813/8*
1791-1/41/2*
18073/8*
1811-3/41/2*
1828-1/23/8*
1832-3/43/4*
18471/2*
1858-1/21/2*
1867/83/4*
1871-1/43/4*
18873/4*
1898-1/23/4*
19017/8*
1911-1/47/8*
1921-1/27/8*
19337/8*
1943-1/27/8*
19547/8*
19657/8*
19767/8*
19877/8*
117A71/16
117B71/8

*Not considered a standard size 

Please Note:

Only certain numbers are assigned to rubber band sizes. For example, rubber band size number 1 does not exist as far as industry standards are concerned. When searching for size numbers that do not exist, you will see “N/A” in the results section. 

Search By Dimensions

Use the dropdown selectors below to find the rubber band size number.

Search By Dimensions

(inches)

(inches)

Results:

Flat Length
Size Number
Cut Width
Size Flat Length Cut Width
1N/A
2N/A
3N/A
4N/A
5N/A
6N/A
73/41/16*
87/81/16
911/16*
101-1/41/16
111-1/21/16*
121-3/41/16
13N/A
1421/16
15N/A
162-1/21/16
172-3/41/16
1831/16
193-1/21/16
2041/16*
214-1/21/16*
2251/16*
235-1/21/16*
2461/16*
267/81/8*
271-1/41/8
281-1/21/8*
291-3/41/8*
3021/8
312-1/21/8
3231/8
333-1/21/8
3441/8*
354-1/21/8*
3651/8*
375-1/21/8*
3861/8*
396-1/21/8*
4023/16*
412-1/23/16*
4233/16*
433-1/23/16*
4443/16*
454-1/23/16*
4653/16*
477/83/16*
4863/16*
491-1/43/16*
50N/A
516-1/21/16*
538-1/21/16*
54Asst.Asst.
567/81/4*
571-3/41/4
582-3/41/4*
591-1/41/4*
601-1/21/4*
6121/4*
622-1/21/4
6331/4
643-1/21/4
6541/4*
664-1/21/4*
6751/4*
685-1/21/4*
6961/4*
701-1/23/8*
7123/8*
722-1/23/8*
7333/8
743-1/23/8
7543/8*
764-1/23/8*
7753/8*
785-1/23/8*
7963/8*
801-1/21/2*
8121/2*
822-1/21/2
8331/2*
843-1/21/2
8541/2*
864-1/21/2*
8751/2*
885-1/21/2*
8961/2*
901-3/43/4*
9123/4*
922-1/23/4*
9333/4*
943-1/23/4
9543/4*
964-1/23/4*
9753/4*
985-1/23/4*
9963/4*
100N/A
10171*
1028-1/21*
10335/8*
10445/8*
10555/8
10665/8*
10775/8
10921*
1101-1/21*
1111-3/41*
1122-1/21*
11331*
1143-1/21*
11541*
1164-1/21*
1185-1/21*
11961*
1201-1/45/64*
1211-3/45/64*
12225/64*
1232-1/25/64*
12435/64*
1253-1/25/64*
12645/64*
12775/64*
1281-1/43/32*
1291-3/43/32*
13023/32*
1312-1/23/32*
13233/32*
1333-1/23/32*
13443/32*
13553/32*
1365-1/23/32*
13763/32*
13873/32*
1398-1/23/32*
1428-1/21/8*
1437/83/64*
1441-1/43/64*
1451-3/43/64*
14623/64*
1472-1/23/64*
15073/16*
1511-1/45/8*
1528-1/23/16*
1531-1/25/8*
1541-3/45/8*
15525/8*
1563-1/25/8*
1574-1/25/8*
1585-1/25/8*
1598-1/25/8*
1601-1/25/16*
16125/16*
1622-1/25/16*
16335/16*
1643-1/25/16*
16545/16*
16655/16*
16775/16*
16813/8*
1691-1/43/8*
17071/4*
1711-3/43/8*
1728-1/21/4*
1732-3/43/8*
1764-1/25/64*
1777/81/2*
17813/8*
1791-1/41/2*
18073/8*
1811-3/41/2*
1828-1/23/8*
1832-3/43/4*
18471/2*
1858-1/21/2*
1867/83/4*
1871-1/43/4*
18873/4*
1898-1/23/4*
19017/8*
1911-1/47/8*
1921-1/27/8*
19337/8*
1943-1/27/8*
19547/8*
19657/8*
19767/8*
19877/8*
117A71/16
117B71/8

*Not considered a standard size

Please Note:

Not every size combination will result in a size number. For example, 1″ flat length by 1″ cut width does not exist as far as industry standards are concerned. However, a rubber band with odd dimensions could still be available, so don’t hesitate to contact us for more information about custom rubber bands.

Industrial Products

Questions?

Contact us!

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Alliance Rubber Company is a family-owned business with humble beginnings that has grown into a thriving American success story. Since 1923, Alliance Rubber has proudly produced rubber bands for use in the home and workplace. Continuing to manufacture its products in the USA, enables Alliance to provide high-quality products, fast service, and fresh stock that is built to last. Alliance Rubber, a women-owned company, manufactures bands that ‘Hold Your World Together.’

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