Dimvo

Calculators

Engineering calculators.

Quick calculations with visible methods, units and assumptions. Choose a tool and get straight to the inputs.

Machining

Speeds & Feeds

Choose a cut, material and cutter for a conservative starting point, or enter exact supplier Vc and fz in expert mode.

Surface Finish

Enter a required Ra to calculate the maximum geometric stepover or feed, or inspect a cut you already programmed.

Tolerances

Fits & Tolerances

Choose a hole or shaft, then select its tolerance letter and grade separately. Get exact limits, the tolerance midpoint, a recommended counterpart and the resulting fit.

Tolerance Stack

Start from a common assembly template or build a signed dimension chain, then check worst-case and RSS against a target range.

Quoting

Machining Quote

Turn quantity, machining time, material cost and your own shop rate into a transparent rough quote.

Geometry

Bolt Pattern

Generate an equally spaced hole pattern from either PCD or adjacent centre spacing, with optional origin offsets.

Thermal Growth

Correct a measured part size to 20 °C or another target temperature, or check how temperature changes a hole-and-shaft fit.

Drill Depth

Choose a stock drill diameter and common point style to calculate the programmed depth for a full-diameter blind or through hole.

Inspection

Process Capability

Check Cpk and Ppk from specification limits and process statistics, with plain-language caveats.

Looking for background? Read the engineering guides, methods and standards reference.