Can I use this calculator for welded and seamless pipe?

Yes. The calculation is based on OD and wall thickness. For most quoting and planning scenarios, the theoretical result is accurate enough.

What if I only know nominal pipe size and schedule?

Look up the actual OD and wall thickness from a schedule table and enter OD and WT. The calculator uses real dimensions, not schedule labels.

Pipe Weight Calculator

Q: Are the results exact?

No. Results are theoretical. For final billing, customs, and contracts, follow the mill packing list and material test certificate.

Q: My alloy is not listed. What should I do?

Select Custom density and enter your material density (kg/m³). Confirm the value from your specification or supplier data for critical work.

Pipe Weight Calculator (Welded & Seamless)

Calculate theoretical weight per piece, line weight, and pieces per metric ton from OD, wall thickness, length, and density.

OD/WT: mm/in · Length: m/mm/ft · Output: kg/lb · kg/m & lb/ft

Inputs

Material (auto-fills density)

Density (kg/m³)

Pieces (optional)

Outer Diameter (OD)

Wall Thickness (WT)

Length per piece

Note: This calculator returns theoretical weight. Actual weight may vary due to ovality, tolerances, surface condition, and weld bead. For final billing/customs, follow mill packing list and MTC.

Results

Single piece weight

— —

Theoretical line weight

— —

Pieces per metric ton

— pcs per 1000 kg

Total weight (pieces)

— —

Formula & Notes

ID = OD − 2 × WT

A = (π / 4) × (OD² − ID²)

Weight per metre = ρ × A

Single piece = (weight per metre) × length

Buying or quoting pipe from China? LYH Steel supplies stainless steel pipes & tubes with processing support and inspection options. See: Stainless Steel Pipe Tube · Quality Inspection · Contact Us

Why Pipe Weight Matters in Procurement and Logistics

Pipe is typically bought and sold by weight. If the weight estimate is off, your quotation, freight budget, and packing plan can shift quickly. A reliable theoretical weight helps you compare offers, plan container loading, and prepare consistent documents for customers and forwarders.

What This Pipe Weight Calculator Covers

Weight per piece from OD, wall thickness, length, and density
Theoretical kg/m and lb/ft line weight for fast engineering checks
Estimated pieces per metric ton (pcs / 1000 kg) to support purchasing and shipment planning

Related LYH resources: Products · Stainless Steel Sheet & Plate · Laser Cutting · Steel Resource Hub (News)

Quick Reference: Inputs, Units, and Outputs

Mobile tip: swipe left/right to view the full table.

Item	What to Enter	Units Supported	Why It Matters
Outer Diameter (OD)	Measured OD from spec or drawing	mm / inch	Defines the outside size of the pipe
Wall Thickness (WT)	Nominal or actual wall thickness	mm / inch	Small changes have a large impact on weight
Length per piece	Cut length per pipe	m / mm / ft	Used to convert kg/m into piece weight
Density (ρ)	Material density for the alloy	kg/m³	Different alloys vary—set the correct density for accurate estimates
Outputs	Piece weight, line weight, pieces per ton	kg / lb · kg/m / lb/ft	Supports quotations, logistics planning, and packing lists

Practical Examples

Example 1: 304 Stainless Steel Pipe

OD = 114.3 mm, WT = 6.0 mm, Length = 6.0 m, Density ≈ 7930 kg/m³
Line weight ≈ 16.19 kg/m; single piece ≈ 97.13 kg

Example 2: Duplex 2205 Pipe

OD = 60.3 mm, WT = 3.9 mm, Length = 6.0 m, Density ≈ 7800 kg/m³
Line weight ≈ 5.39 kg/m; single piece ≈ 32.34 kg

FAQ

Can I use this for welded and seamless pipe?

Yes. The calculation is based on OD and wall thickness. The weld bead can slightly affect real weight, but the formula is suitable for quotes and planning.

What if I only know NPS and schedule?

Look up the actual OD and wall thickness from a schedule table, then enter OD and WT. This calculator uses real dimensions rather than schedule labels.

Are the results exact?

No—results are theoretical. For contracts, customs clearance, and final billing, use the mill packing list and material test certificate (MTC).

My alloy is not listed—what should I do?

Select “Custom density” and enter your material’s density value (kg/m³). For critical work, confirm density from your specification or supplier data.

Keyword Synonyms (for SEO & internal search)

pipe weight calculator, tube weight calculator, OD wall thickness weight, theoretical pipe weight, kg per meter pipe, lb per foot pipe weight, pieces per ton pipe, seamless pipe weight, welded pipe weight, stainless steel tube weight