---
title: "Tube & Ring Weight Calculator"
description: "Tube or ring weight from outside or inner diameter, wall thickness, length and grade ✅ that grade's measured density ⭐ a ring is just a short tube."
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![Tube & Ring Weight Calculator](/images/uploads/5e6db151-1ae3-4c72-912f-cedbc02ac51b/tube-weight-calculator-tube-bundle-end-on-1920x1080.jpg)

Weight

# Tube & Ring Weight Calculator

Calculate tube or ring weight in either mode — outside diameter + wall thickness, or outside + inner diameter. A ring is just a short tube. A real GET form: computes correctly with JavaScript off.

   Tube / ring OD + wall thickness OD + inner diameter

 Quantity

 Outside diameter  mm

 Wall thickness  mm

 Used in OD + wall mode.

 Inner diameter  mm

 Used in OD + inner mode.

 Length  mm

 1 000 mm = 1 m

   Material Steel grade (optional — search by number or designation)  Leave blank to use a generic class estimate instead.

Sourced 7.85 **g/cm³**

1.0254 — Werkstoffnummer catalogue

Sources disagree for this grade

7.85 g/cm³ Werkstoffnummer catalogue 7.859 g/cm³ Splav 7.834 g/cm³ Splav 7.803 g/cm³ Splav 7.77 g/cm³ Splav 7.736 g/cm³ Splav 7.699 g/cm³ Splav 7.659 g/cm³ Splav 7.617 g/cm³ Splav 7.624 g/cm³ Splav 7.6 g/cm³ Splav

 Material class (fallback — used only when no grade above is chosen) Generic (no grade selected)Steel (generic) — 7.85 g/cm³Stainless steel, austenitic (generic) — 7.9 g/cm³Non-ferrous (trade conversion)Titanium (commercially pure) — 4.51 g/cm³Aluminium (generic) — 2.7 g/cm³Copper (generic) — 8.93 g/cm³Brass CuZn40 (60/40, generic) — 8.52 g/cm³ Generic values are class averages, never a substitute for a grade's own measured density.

  Calculate [Reset](/calculators/tube-weight.md "Reset the calculator to its default values") Recalculates on submit — the same value renders with JavaScript off.

### Result

 Valid range

Weight per piece**5.034 kg**

Weight per metre**5.034 kg**

Total weight (× qty)**5.034 kg**

**m** = (π/4) × (D² − d²) × L × ρ × 10⁻⁶

Exact annulus volume with exact π — never the (D − t) × t trade approximation.

**Download as PDF** Result sheet · A4 Run a calculation first — then the sheet is ready to download.

Calculated on SteelEquivalents.com — send us the figures for a quotation.

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## Tube & ring weight — frequently asked

  What happens if the wall thickness exceeds half the outside diameter?

The calculator refuses and names the real bound — wall thickness must be at most half the outside diameter, because more than that is geometrically impossible. It never clamps your input.

  How do I calculate a ring or a hollow disc?

Switch to OD + inner diameter mode and enter the ring's height as the length — a ring is geometrically a short tube.

  Can I enter an inner diameter equal to the outside diameter?

No — that would leave zero wall and zero weight. The calculator refuses with the bound: the inner diameter must be strictly smaller than the outside diameter.