Nylon Weight Calculator
Calculate weight for all nylon grades and shapes with instant, accurate results
Nylon Weight Calculator
Calculation Results
Grade Reference
Nylon Grades & Density Values
Nylon (polyamide) is one of the most widely used engineering plastics, prized for its toughness, low friction, and excellent wear resistance. Density varies meaningfully across grades — using the wrong value leads to significant weight estimation errors.
| Grade | Abbreviation | Density (g/cm³) | Typical Use |
|---|---|---|---|
| Nylon 6 | PA6 | 1.14 | Gears, bearings, bushings, film |
| Nylon 6/6 | PA66 | 1.15 | Automotive parts, electrical connectors |
| Glass-Filled Nylon 30% | PA66-GF30 | 1.37 | Structural parts, housings, brackets |
| Cast Nylon | MC Nylon | 1.16 | Large blocks, rods, sheaves, wear pads |
How Nylon Weight Is Calculated
Weight Formula
Nylon 6 vs Nylon 6/6 — What's the Difference?
Nylon 6 (PA6)
- • Density: 1.14 g/cm³
- • Better impact resistance
- • Easier to process
- • Higher moisture absorption
- • Lower melting point (~220°C)
Nylon 6/6 (PA66)
- • Density: 1.15 g/cm³
- • Higher stiffness and strength
- • Better heat resistance
- • Lower moisture absorption
- • Higher melting point (~265°C)
Note on Glass-Filled Nylon
Glass fiber reinforcement increases density from ~1.14 to ~1.37 g/cm³ at 30% fill — a 20% increase. This significantly affects weight estimates. Always verify the glass fiber percentage with your supplier's datasheet for critical applications.
Frequently Asked Questions
What is the density of nylon?
Nylon density varies by grade: Nylon 6 is 1.13 g/cm³, Nylon 6/6 is 1.14 g/cm³, Cast Nylon 6 (MC Nylon) is 1.16 g/cm³, and 30% glass-filled nylon is 1.35 g/cm³. Nylon is heavier than HDPE (0.955 g/cm³) and polypropylene (0.905 g/cm³) but lighter than PVC (1.38 g/cm³). Glass-filled grades weigh approximately 20% more than unfilled nylon for the same volume.
How do I calculate nylon rod weight?
Nylon rod weight = π × (diameter ÷ 2)² × length (mm) ÷ 1000 × density (g/cm³). For a 50 mm diameter × 1000 mm long Nylon 6/6 rod (1.14 g/cm³): π × 25² × 1000 ÷ 1000 × 1.14 = 1,963.5 × 1.14 = 2,238 g (2.238 kg). For cast nylon rod (1.16 g/cm³), the same dimensions give 2,278 g. Select Rod shape in the calculator above and enter your diameter and length.
How do I calculate cast nylon weight?
Cast nylon 6 has a density of 1.16 g/cm³ — slightly higher than injection-grade Nylon 6 (1.13 g/cm³) due to higher molecular weight and crystallinity from the casting process. Select "Cast Nylon 6 (MC Nylon)" from the grade dropdown. Weight = volume (cm³) × 1.16. For large-diameter cast rod: volume = π × (D/2)² × L ÷ 1000. Cast nylon is commonly available in large-diameter billets and slab stock not available in extruded form.
What is the nylon weight calculation formula?
Sheet: Weight (g) = L × W × T (mm) ÷ 1000 × Density (g/cm³). Rod: Weight (g) = π × (D ÷ 2)² × L (mm) ÷ 1000 × Density. Tube: Weight (g) = π × ((OD ÷ 2)² − (ID ÷ 2)²) × L (mm) ÷ 1000 × Density. For imperial dimensions in inches, multiply each dimension by 25.4 before applying the formula, or use the imperial unit toggle in the calculator above.
How do I calculate nylon sheet weight?
Nylon sheet weight = Length (mm) × Width (mm) × Thickness (mm) ÷ 1000 × Density (g/cm³). For a 500 mm × 500 mm × 25 mm Nylon 6 sheet (1.13 g/cm³): (500 × 500 × 25) ÷ 1000 × 1.13 = 6,250 × 1.13 = 7,063 g (7.063 kg). For Nylon 6/6 (1.14 g/cm³), the same dimensions give 7,125 g. Use the Sheet shape in the calculator above and switch to imperial if your dimensions are in inches.