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.
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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.