---
title: "Hexagon Bar Weight Calculator"
description: "Calculate hexagon bar weight from width across flats, length and grade ✅ that grade's measured density ⭐ exact √3, not a rounded 0.866 factor."
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![Hexagon Bar Weight Calculator](/images/uploads/53485b1c-46f5-41a9-8a0b-62f4d43d0bfd/hexagon-bar-weight-calculator-hex-bar-ends-1920x1080.jpg)

Weight

# Hexagon Bar Weight Calculator

Calculate hexagon bar weight from the width across flats (wrench size), length and grade — using that grade's own measured density. A real GET form: computes correctly with JavaScript off.

   Bar Quantity

 Width across flats  mm

 The wrench size — not corner to corner.

 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. Grade "11SMn30" not found — using the material class below instead.

Generic estimate 7.85 **g/cm³**

Steel (generic) — EN 10025-1 mass convention

 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/hexagon-bar-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**2.454 kg**

Weight per metre**2.454 kg**

Total weight (× qty)**2.454 kg**

**m** = (√3/2) × w² × L × ρ × 10⁻⁶

Exact regular-hexagon area with exact √3 — never a rounded 0.866 trade factor.

**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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## Hexagon bar weight — frequently asked

  Which dimension do I measure — across flats or across corners?

Across flats — the wrench size, the distance between two parallel faces. The corner-to-corner diameter is about 15% larger and would overstate the weight by a third.

  What formula does this calculator use?

The exact regular-hexagon area: (√3 ⁄ 2) × w², with w the width across flats — multiplied by length and the density shown above. No rounded trade factor.

  Why does the grade matter for a hexagon bar?

Hexagon bar is typically free-cutting or stainless stock, and those grades' densities differ from the generic 7.85 g/cm³ — the calculator uses the grade's own measured density when you name one.