# Double-braid rope diameters (polyester, nylon): 1/4 to 2-5/8 in with weight per 100 ft and minimum break strength

> What diameters does double-braid polyester or nylon rope come in, and what does it weigh and break at?

- Category: Hardware › Materials & stock
- Kind: Standard part
- Basis: Yale Cordage Portland Braid data sheet, CWC composite double braid cut sheet and Oceanside nylon / polyester double braid tables; numbers only
- Page: https://xemstudio.com/objects/double-braid-rope-polyester-nylon-diameters/ · JSON: https://xemstudio.com/api/geometry?object=double-braid-rope-polyester-nylon-diameters · Plain text: https://xemstudio.com/objects/double-braid-rope-polyester-nylon-diameters/sheet.txt
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**Exact dimensions.** True size, with no tolerance added.

## Notes

- Double-braid rope has a braided core inside a braided cover; it is sold by nominal diameter in inches (1/4 to 2-5/8 in in Yale's data sheet). Three polyester double-braid sources and one nylon double-braid source are shown side by side; diameters are nominal (the actual diameter of a braided rope varies with load and make, and none of the sheets gives a diameter tolerance).
- Weights per 100 ft agree where two sources share a size: 9/16 (10.0), 5/8 (13.0) and 1-1/4 (54.0) are identical in Yale and CWC; 3/8 (5.0 vs 4.5), 1/2 (7.9 vs 8.1), 3/4 (16.4 vs 18.0), 1 (36.6 vs 32.0) and 1-1/2 (69.2 vs 75.0) differ, so rope of the same nominal size is not the same rope. Minimum break strengths differ much more (1/2 in polyester: Yale 9,000 lbf spliced, CWC 9,500, Oceanside 10,400; 3/4 in: 17,010 / 26,000 / 18,000). Yale's figure is a minimum spliced break; the other sheets print a minimum break without saying spliced or not. These are makers' numbers for specific products, not working loads, and no working-load limit is tabulated.
- Oceanside prints weight per coil (coil lengths differ per size), circumference is printed by none of the three, so weights per coil and circumference are left out. Oceanside's three-strand nylon table (1/4 to 1-1/2 in, 1,540 to 59,620 lbf) is not braided and is not tabulated.
- Circumference ('rope size' in inches around) is the older way to size rope: circumference = π × diameter. Not on any sheet read here, so not tabulated.
- Cord, paracord and bungee: paracord-types-mil-c-5040, bungee-shock-cord-diameters-and-hooks. Steel wire rope: wire-rope-sizes-6x19-7x19-1x19-weights.
- No STEP/STL: a rope is a plain cylinder of no fixed length. McMaster-Carr sells nylon and polyester rope; its category is linked.

## Sizes

| diameter (in) | decimal (in) | mm | Yale Portland Braid polyester: lb/100 ft | Yale: min spliced break (lbf) | CWC polyester: lb/100 ft | CWC: min break (lbf) | Oceanside polyester DB: min break (lbf) | Oceanside nylon DB: min break (lbf) |
|---|---|---|---|---|---|---|---|---|
| 1/4 in | 0.2500 | 6.35 | 2.2 | 2,196 | — | — | — | — |
| 5/16 in | 0.3125 | 7.94 | 3.5 | 3,366 | — | — | — | — |
| 3/8 in | 0.3750 | 9.52 | 5 | 4,491 | 4.5 | 5,000 | 4,900 | 5,000 |
| 7/16 in | 0.4375 | 11.11 | 6.3 | 6,543 | 6.1 | 7,500 | — | — |
| 1/2 in | 0.5000 | 12.70 | 7.9 | 9,000 | 8.1 | 9,500 | 10,400 | 8,000 |
| 9/16 in | 0.5625 | 14.29 | 10 | 11,205 | 10 | 16,150 | — | — |
| 5/8 in | 0.6250 | 15.88 | 13 | 13,662 | 13 | 18,000 | 16,100 | 14,800 |
| 3/4 in | 0.7500 | 19.05 | 16.4 | 17,010 | 18 | 26,000 | 18,000 | 19,000 |
| 7/8 in | 0.8750 | 22.22 | 27.1 | 27,945 | 25 | 32,000 | — | — |
| 1 in | 1.0000 | 25.40 | 36.6 | 36,288 | 32 | 42,000 | 32,000 | 33,500 |
| 1-1/8 in | 1.1250 | 28.57 | 43.5 | 47,124 | 46 | 47,900 | — | — |
| 1-1/4 in | 1.2500 | 31.75 | 54 | 49,140 | 54 | 56,200 | 49,000 | 52,000 |
| 1-1/2 in | 1.5000 | 38.10 | 69.2 | 60,903 | 75 | 73,380 | — | 74,000 |
| 1-3/4 in | 1.7500 | 44.45 | 103 | 86,400 | — | — | — | — |
| 2 in | 2.0000 | 50.80 | 132 | 112,716 | — | — | — | 131,000 |
| 2-1/4 in | 2.2500 | 57.15 | 155 | 135,000 | — | — | — | — |
| 2-1/2 in | 2.5000 | 63.50 | 172.6 | 151,380 | — | — | — | — |
| 2-5/8 in | 2.6250 | 66.67 | 220 | 189,000 | — | — | — | — |

## Where the files are

- Yale Cordage: [Portland Braid (double-braided polyester): diameter, weight per 100 ft, minimum spliced break strength, 1/4 to 2-5/8 in](https://yalecordage.com/wp-content/uploads/2021/03/Yale-Cordage-Data-Sheet-Portland-Braid.pdf) — web — Publisher's page; dimensions are facts
- Utility Pipe Supply (polyester double braid pulling rope cut sheet): [Composite double braid pulling rope: diameter 3/8 to 1-1/2 in, minimum break strength, weight per 100 ft](https://utilitypipesupply.com/cdn/shop/files/Composite-Double-Braid-Pulling-Rope-Cut-Sheet_8.5x11_4_7_23.pdf) — web — Publisher's page; dimensions are facts
- Oceanside (catalogue 2024, section 10): [Nylon double braid 2-1 and polyester double braided 2-1, Ocean Steel Line: diameter, weight per coil, minimum break; nylon 3-strand](https://cdn.shopify.com/s/files/1/0445/7185/2960/files/Pages_from_Oceanside-Product-Catalogue-2024-SECTION-10.pdf) — web — Publisher's page; dimensions are facts
- McMaster-Carr: [Nylon rope (free STEP/IGES per part, for your own design use; no redistribution)](https://www.mcmaster.com/products/nylon-rope) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution (verify at link)

## Questions

**How strong is 1/2 inch double-braid polyester rope?**

Yale: 9,000 lbf minimum spliced break strength; CWC: 9,500; Oceanside: 10,400. Weight 7.9 (Yale) to 8.1 (CWC) lb per 100 ft.

**What diameters does double-braid rope come in?**

1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 3/4, 7/8, 1, 1-1/8, 1-1/4, 1-1/2, 1-3/4, 2, 2-1/4, 2-1/2 and 2-5/8 in (Yale Portland Braid).

**How much does 1 inch polyester double-braid rope weigh?**

36.6 lb per 100 ft (Yale) or 32 lb per 100 ft (CWC).

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