Engineering Toolkit

Conversions, calculators and reference charts for the workshop and the drawing board.

Drag a card by its handle to move it. Set its width with 1, 2 or 3.

Length converter

Width
mm · cm · m · km · in · ft · yd · mi
in
mm

    Calculation steps

    
          
    Inches to millimeters table
    Inches (in)Millimeters (mm)

    All factors are exact: 1 in = 25.4 mm, 1 ft = 304.8 mm, 1 yd = 914.4 mm, 1 mi = 1609.344 m.

    O-ring groove calculator

    Width
    ISO 3601 O-rings · H8 / f7 / H9 fits · mm
    RefInputSizeTol.LowerUpperMinMaxTolerance reset

    Material finder

    Width
    Atlas Steels manual (Jul 2020) · Midway Metals catalogue (13th ed.)

    Data taken from the suppliers' catalogues and may be out of date. Confirm availability, grades and lengths with the supplier before ordering. Weights are approximate; carbon pipe and CHS weights are calculated with the formula in the Atlas manual. Catalogues: Atlas Steels · Midway Metals.

    United Fasteners catalogue

    Width
    Brisbane Product Catalogue · Issue 4 · 264 pages

    Search loads the catalogue data the first time you type.