# Acrylic tube sizes: OD × ID × wall (1/4 to 6 in OD, clear extruded PMMA), inch and mm

> What are the standard OD, ID and wall thickness of clear acrylic tube?

- Category: Hardware › Materials & stock
- Kind: Standard part
- Basis: eplastics (24 sizes, page 1 of 2) and U.S. Plastic (14 sizes) distributor listings; wall derived as (OD − ID) / 2
- Page: https://xemstudio.com/objects/acrylic-tube-od-wall-sizes/ · JSON: https://xemstudio.com/api/geometry?object=acrylic-tube-od-wall-sizes · Plain text: https://xemstudio.com/objects/acrylic-tube-od-wall-sizes/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

**Exact dimensions.** True size, with no tolerance added.

## Notes

- Clear extruded acrylic (PMMA) tube is sold by outside diameter and inside diameter; the wall is derived, (OD − ID) / 2, because neither distributor prints a wall column. Sizes are nominal inch sizes; mm columns are exact conversions of the inch values (× 25.4), not separate catalog data. Cast acrylic tube and heavy-wall tube exist (U.S. Plastic lists cast and 'heavy wall' items) but no table of them was read.
- eplastics lists 24 sizes on page 1 of 2 (1/4 in OD to 2-1/2 in OD); page 2 was not read, so larger sizes there are missing from this table. U.S. Plastic's page lists 14 sizes from 1-1/2 to 6 in OD, all 1/8 in wall. The five sizes both distributors list (1-1/2 × 1-1/4, 1-3/4 × 1-1/2, 2 × 1-3/4, 2-1/4 × 2, 2-1/2 × 2-1/4) agree.
- No STEP/STL: a tube is a plain hollow cylinder with no other published feature. Left out: tolerances (OD and wall tolerances were not read), length, square and rectangular acrylic tube, cast tube.

## Sizes

| OD, in | ID, in | wall (OD − ID) / 2, in | OD, mm | ID, mm | wall, mm | listed by |
|---|---|---|---|---|---|---|
| 1/4 | 1/8 | 1/16 | 6.35 | 3.17 | 1.59 | eplastics |
| 5/16 | 3/16 | 1/16 | 7.94 | 4.76 | 1.59 | eplastics |
| 3/8 | 1/8 | 1/8 | 9.52 | 3.17 | 3.17 | eplastics |
| 3/8 | 1/4 | 1/16 | 9.52 | 6.35 | 1.59 | eplastics |
| 1/2 | 3/16 | 5/32 | 12.70 | 4.76 | 3.97 | eplastics |
| 1/2 | 1/4 | 1/8 | 12.70 | 6.35 | 3.17 | eplastics |
| 1/2 | 3/8 | 1/16 | 12.70 | 9.52 | 1.59 | eplastics |
| 5/8 | 3/8 | 1/8 | 15.88 | 9.52 | 3.17 | eplastics |
| 5/8 | 1/2 | 1/16 | 15.88 | 12.70 | 1.59 | eplastics |
| 3/4 | 1/2 | 1/8 | 19.05 | 12.70 | 3.17 | eplastics |
| 3/4 | 5/8 | 1/16 | 19.05 | 15.88 | 1.59 | eplastics |
| 7/8 | 3/4 | 1/16 | 22.22 | 19.05 | 1.59 | eplastics |
| 1 | 3/4 | 1/8 | 25.40 | 19.05 | 3.17 | eplastics |
| 1 | 7/8 | 1/16 | 25.40 | 22.22 | 1.59 | eplastics |
| 1-1/4 | 1 | 1/8 | 31.75 | 25.40 | 3.17 | eplastics |
| 1-1/4 | 1-1/8 | 1/16 | 31.75 | 28.57 | 1.59 | eplastics |
| 1-1/2 | 1 | 1/4 | 38.10 | 25.40 | 6.35 | eplastics |
| 1-1/2 | 1-1/4 | 1/8 | 38.10 | 31.75 | 3.17 | eplastics + U.S. Plastic |
| 1-5/8 | 1-3/8 | 1/8 | 41.27 | 34.92 | 3.17 | eplastics |
| 1-3/4 | 1-1/2 | 1/8 | 44.45 | 38.10 | 3.17 | eplastics + U.S. Plastic |
| 2 | 1-1/2 | 1/4 | 50.80 | 38.10 | 6.35 | eplastics |
| 2 | 1-3/4 | 1/8 | 50.80 | 44.45 | 3.17 | eplastics + U.S. Plastic |
| 2-1/4 | 2 | 1/8 | 57.15 | 50.80 | 3.17 | eplastics + U.S. Plastic |
| 2-1/2 | 2-1/4 | 1/8 | 63.50 | 57.15 | 3.17 | eplastics + U.S. Plastic |
| 2-3/4 | 2-1/2 | 1/8 | 69.85 | 63.50 | 3.17 | U.S. Plastic |
| 3 | 2-3/4 | 1/8 | 76.20 | 69.85 | 3.17 | U.S. Plastic |
| 3-1/4 | 3 | 1/8 | 82.55 | 76.20 | 3.17 | U.S. Plastic |
| 3-1/2 | 3-1/4 | 1/8 | 88.90 | 82.55 | 3.17 | U.S. Plastic |
| 3-3/4 | 3-1/2 | 1/8 | 95.25 | 88.90 | 3.17 | U.S. Plastic |
| 4 | 3-3/4 | 1/8 | 101.60 | 95.25 | 3.17 | U.S. Plastic |
| 4-1/2 | 4-1/4 | 1/8 | 114.30 | 107.95 | 3.17 | U.S. Plastic |
| 5 | 4-3/4 | 1/8 | 127.00 | 120.65 | 3.17 | U.S. Plastic |
| 6 | 5-3/4 | 1/8 | 152.40 | 146.05 | 3.17 | U.S. Plastic |

## Where the files are

- eplastics: [Clear extruded acrylic tube: OD x ID (24 of the sizes on page 1 of 2)](https://www.eplastics.com/shapes/plexiglass/tube/clear-extruded) — web — Publisher's page; dimensions are facts
- U.S. Plastic Corp: [Clear extruded acrylic tubing 1-1/2 to 6 in OD, 1/8 in wall](https://www.usplastic.com/catalog/item.aspx?itemid=23401) — web — Publisher's page; dimensions are facts
- McMaster-Carr: [Acrylic pipe / tube (free STEP/IGES per part, for your own design use; no redistribution)](https://www.mcmaster.com/products/acrylic-pipe/) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution (verify at link)
- McMaster-Carr: [Acrylic hollow rods (free STEP/IGES per part, for your own design use; no redistribution)](https://www.mcmaster.com/acrylic-hollow-rods) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution (verify at link)

## Questions

**What is the ID of a 2 inch OD acrylic tube?**

1-3/4 in (1/8 in wall) at both distributors; eplastics also lists a 2 in OD × 1-1/2 in ID (1/4 in wall).

**What wall thickness do acrylic tubes have?**

Derived as (OD − ID) / 2: 1/16 to 1/4 in in the sizes read, 1/8 in for every U.S. Plastic size.

**What is the smallest acrylic tube?**

1/4 in OD × 1/8 in ID (1/16 in wall), eplastics ACREXT.250X.125.

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