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Blade steel metallurgy in a working knife shop

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Steel Weight Calculator

Enter length, width and thickness to get a steel bar's weight in pounds and ounces at 0.284 lb per cubic inch. Useful for blanks, bar orders and sword math.

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Your numbers, live

Steel weighs 0.284 pounds per cubic inch, and that one number answers a surprising amount of shop math: what a blade blank weighs, what the bar order will cost to ship, whether the anime sword is possible. Enter dimensions, read pounds.

Your numbers

Bar stock as ordered, before any grinding takes weight back off.

Steel weight

0.64lb · 10.2 oz

Uses 0.284 lb/in³ as a general steel estimate. Aluminum is estimated at about 35% of that density.

Polished aluminum drive wheel with keyed bore, three-quarter view of the dished face, on black with a purple glow
The answer is only as good as the measurement — use the setup you actually have on the machine.

The arithmetic

Behind the number

The numbers behind it

Carbon and alloy blade steels all sit within about 1% of 0.284 lb/in³ — close enough that one number serves 1084, 5160, AEB-L and MagnaCut alike. Aluminum (6061) runs about 0.098 lb/in³ — roughly 35% of steel — which is the entire Nova-versus-Nebula conversation in one density comparison. Titanium sits near 0.163, brass near 0.307.

Shop uses

Estimate finished blade weight (blank weight minus roughly what your grind removes — a full flat grind takes off around a third of a blank’s weight); sanity-check sword builds before the steel order; compare shipping weights on bar stock; and settle every forum argument about giant fictional weapons with arithmetic instead of adjectives.

Browse more tools in the Calculators section.

More shop math

The rest of the calculators

Eight tools, all free, all running in the page.

  • Polished aluminum drive wheel with keyed bore, three-quarter view of the dished face, on black with a purple glow
    Reference chart

    Belt Speed by Task Chart (SFPM)

    Set your VFD by the job: working SFPM ranges for hogging, bevel grinding, hardened steel, handles and leather, with percentages for a direct-drive 2x72 setup.

    Read the chart
  • Abrasives and belt grinding in a working knife shop
    Live tool

    2×72 Belt Speed Calculator

    Find your 2x72's surface speed in SFPM from drive wheel diameter and motor RPM, with optional VFD frequency, and see how hard a belt cuts and how hot it runs.

    Open the tool
  • Knife blade design in a working knife shop
    Live tool

    Grind Height Calculator

    Turn stock thickness, edge thickness and bevel angle into the scribe height for a flat grind, with notes on reading the answer and using it at the machine.

    Open the tool

Same bench

The machine behind the math

Speed, angle and pressure only mean something on a grinder that holds its setting. I machine the parts, hand-assemble, track and test Torus grinders in Sterling, Illinois.

See the whole shop
  • Classic aluminum 2x72 grinder, side view with flat-platen tool arm and yellow Safety Rules label, on black with a purple glow

    Torus 2×72 Classic Aluminum Belt Grinder

    Prior-design aluminum chassis, 90-degree tilt and 1.5-inch tooling arms.

    Starts at$995View

One-man shop

Number not matching your machine?

Send me your wheel size, motor and VFD details so I can compare them with the belt-speed calculation.

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