Precision tools

Engineering Calculators

Fast, static-data tools that explain their inputs, methodology, result and limitations. Unsupported cases do not receive guessed answers.

Tap drill calculator

Reviewed Unified and metric cut-tap recommendations with a forming-tap safety boundary.

Metric, decimal, fractional, number and letter comparisons.

Exact pitch-to-TPI conversion with explicit display rounding.

Transparent workshop allowances, deliberately not labeled as standards values.