PVC Pipe Sizes Chart
Complete reference charts for Schedule 40 and Schedule 80 PVC pipe dimensions. Find OD, ID, and wall thickness for all standard sizes from 1/2" to 12" NPS.
Schedule 40 PVC Pipe Sizes
Schedule 40 PVC is the most common schedule for residential plumbing, irrigation, and low-pressure applications. All dimensions per ASTM D1785 standard.
| NPS | OD (in) | OD (mm) | ID (in) | ID (mm) | Wall (in) | Wall (mm) | Area (in²) |
|---|---|---|---|---|---|---|---|
| 1/2" | 0.840" | 21.30 | 0.622" | 15.80 | 0.109" | 2.77 | 0.304 |
| 3/4" | 1.050" | 26.70 | 0.824" | 20.90 | 0.113" | 2.87 | 0.533 |
| 1" | 1.315" | 33.40 | 1.049" | 26.60 | 0.133" | 3.38 | 0.864 |
| 1-1/4" | 1.660" | 42.20 | 1.380" | 35.10 | 0.140" | 3.56 | 1.496 |
| 1-1/2" | 1.900" | 48.30 | 1.610" | 40.90 | 0.145" | 3.68 | 2.036 |
| 2" | 2.375" | 60.30 | 2.067" | 52.50 | 0.154" | 3.91 | 3.356 |
| 3" | 3.500" | 88.90 | 3.068" | 77.90 | 0.216" | 5.49 | 7.393 |
| 4" | 4.500" | 114.30 | 4.026" | 102.30 | 0.237" | 6.02 | 12.730 |
| 6" | 6.625" | 168.30 | 6.065" | 154.10 | 0.280" | 7.11 | 28.890 |
| 8" | 8.625" | 219.10 | 7.961" | 202.20 | 0.332" | 8.43 | 49.777 |
| 10" | 10.750" | 273.10 | 10.020" | 254.50 | 0.365" | 9.27 | 78.854 |
| 12" | 12.750" | 323.90 | 11.938" | 303.20 | 0.406" | 10.31 | 111.932 |
Standard: ASTM D1785 - PVC Plastic Pipe, Schedules 40, 80, and 120 (IPS)
Schedule 80 PVC Pipe Sizes
Schedule 80 PVC has thicker walls for higher pressure ratings and increased durability. Commonly used in industrial applications and chemical processing.
| NPS | OD (in) | OD (mm) | ID (in) | ID (mm) | Wall (in) | Wall (mm) | Area (in²) |
|---|---|---|---|---|---|---|---|
| 1/2" | 0.840" | 21.30 | 0.546" | 13.90 | 0.147" | 3.73 | 0.234 |
| 3/4" | 1.050" | 26.70 | 0.742" | 18.80 | 0.154" | 3.91 | 0.432 |
| 1" | 1.315" | 33.40 | 0.957" | 24.30 | 0.179" | 4.55 | 0.719 |
| 1-1/4" | 1.660" | 42.20 | 1.278" | 32.50 | 0.191" | 4.85 | 1.283 |
| 1-1/2" | 1.900" | 48.30 | 1.500" | 38.10 | 0.200" | 5.08 | 1.767 |
| 2" | 2.375" | 60.30 | 1.939" | 49.30 | 0.218" | 5.54 | 2.953 |
| 3" | 3.500" | 88.90 | 2.900" | 73.70 | 0.300" | 7.62 | 6.605 |
| 4" | 4.500" | 114.30 | 3.826" | 97.20 | 0.337" | 8.56 | 11.497 |
| 6" | 6.625" | 168.30 | 5.761" | 146.30 | 0.432" | 10.97 | 26.067 |
| 8" | 8.625" | 219.10 | 7.565" | 192.20 | 0.530" | 13.46 | 44.948 |
| 10" | 10.750" | 273.10 | 9.562" | 242.90 | 0.594" | 15.09 | 71.810 |
| 12" | 12.750" | 323.90 | 11.230" | 285.20 | 0.760" | 19.30 | 99.049 |
Standard: ASTM D1785 - PVC Plastic Pipe, Schedules 40, 80, and 120 (IPS)
About PVC Pipe Schedules
PVC pipe schedule refers to the wall thickness of the pipe. All pipes of the same nominal size have the same outside diameter (OD), but different schedules have different wall thicknesses, which affects the inside diameter (ID) and pressure rating.
Schedule 40
- Wall: Standard thickness
- ID: Larger (more flow capacity)
- Pressure: Lower rating (~150-280 psi)
- Cost: Less expensive
- Uses: Residential plumbing, irrigation, drainage
- Common: Most widely used schedule
Schedule 80
- Wall: Extra heavy thickness
- ID: Smaller (reduced flow capacity)
- Pressure: Higher rating (~280-470 psi)
- Cost: More expensive
- Uses: Industrial, chemical processing, high-pressure
- Durability: Better impact resistance
Important Note:
Pressure ratings vary by pipe size and temperature. Always consult manufacturer specifications and local codes for exact pressure ratings. The values above are approximate for cold water service.
How to Read This Chart
Column Definitions
- NPS (Nominal Pipe Size):
- The standard designation for pipe size (e.g., 1/2", 1", 2"). This is NOT the actual OD or ID.
- OD (Outside Diameter):
- The actual outer diameter of the pipe. Same for all schedules of the same NPS.
- ID (Inside Diameter):
- The actual inner diameter. Decreases as schedule number increases (thicker walls).
- Wall Thickness:
- Pipe wall thickness. Increases with schedule number for higher pressure ratings.
- Area:
- Cross-sectional flow area based on ID. Used for flow capacity calculations.
How to Select Pipe Size
- Determine your required flow rate (GPM or L/min)
- Choose schedule based on pressure requirements (40 for standard, 80 for high-pressure)
- Find pipe size that provides adequate flow area while maintaining recommended velocity
- Verify pressure rating meets system requirements plus safety factor
- Use our Schedule 40/80 Comparison Calculator for detailed analysis
PVC Pipe Applications
Schedule 40 Applications
- Residential Plumbing: Cold water supply, drain lines
- Irrigation Systems: Sprinklers, drip systems
- Swimming Pools: Return lines, drainage
- Drainage: Gutters, downspouts, sewer lines
- Low-Pressure HVAC: Condensate drains
- Electrical Conduit: Underground cable protection
Schedule 80 Applications
- Industrial Process: Chemical transfer, high-pressure fluids
- Commercial Buildings: High-rise water supply
- Chemical Processing: Corrosive chemical handling
- Water Treatment: High-pressure filtration systems
- Underground: Burial applications requiring impact resistance
- Cold Water: High-pressure distribution systems
Note: PVC is not suitable for hot water applications (max temp ~140°F / 60°C). For hot water, use CPVC (Chlorinated PVC) which can handle temperatures up to 200°F (93°C).
Standards & Specifications
ASTM D1785 Standard
ASTM D1785 is the primary standard for PVC plastic pipe in Schedules 40, 80, and 120. It specifies dimensions, materials, and performance requirements for PVC pipe used in pressure applications.
All dimensions in this chart conform to ASTM D1785 specifications for IPS (Iron Pipe Size) PVC pipe, which uses the same nominal sizes and outside diameters as steel pipe.
IPS vs CTS
IPS (Iron Pipe Size)
Uses the same OD as steel pipe. Most common for plumbing and industrial applications. Schedule 40 and 80 designations. This chart shows IPS dimensions.
CTS (Copper Tube Size)
Uses copper tube outside diameters. Common for residential water supply. Uses SDR (Standard Dimension Ratio) instead of schedule numbers.
Material Properties
- Material: Polyvinyl Chloride (PVC) Type 1, Grade 1
- Density: Approximately 1.4 g/cm³ (87 lb/ft³)
- Temperature Range: 33°F to 140°F (1°C to 60°C)
- Chemical Resistance: Excellent for acids, bases, salts
- UV Resistance: Moderate (should be protected or UV-stabilized)
- Joining Methods: Solvent cement, threaded, flanged
Related Calculators
Schedule 40 vs 80 Comparison
Compare Schedule 40 and 80 dimensions side-by-side and see how wall thickness affects flow capacity. Interactive calculator with comparison insights.
Pipe Dimension Lookup
Comprehensive pipe calculator for all materials and schedules with detailed specifications. Includes steel, PVC, copper, and HDPE pipes.
Engineering Notes & Disclaimer
Standards Compliance: All dimensions in this chart are based on ASTM D1785 (PVC Plastic Pipe, Schedules 40, 80, and 120) for IPS (Iron Pipe Size) PVC pipe.
Pressure Ratings: Pressure ratings vary by pipe size, temperature, and service conditions. Always consult manufacturer specifications and applicable codes for exact pressure ratings. Values decrease with temperature and may be reduced for certain chemicals or applications.
Temperature Limitations: Standard PVC is rated for maximum continuous service at 140°F (60°C). Pressure ratings decrease significantly at elevated temperatures. For hot water applications, use CPVC (Chlorinated PVC) which is rated to 200°F (93°C).
Professional Verification: This chart is for reference and preliminary design only. All piping systems must be designed and verified by qualified engineers in accordance with applicable codes, standards, and local regulations. Always verify dimensions and specifications with manufacturer data sheets.
Liability: The user assumes all responsibility for proper application of this information. PipeSizing.net and its operators are not liable for any damages or losses resulting from the use of this chart.