How accurate are metric to imperial screw conversions?

This tool maps common metric screw sizes to their closest commonly used imperial thread equivalents for practical workshop use.

Does this converter support live updates?

Yes. Results update instantly when you change direction or select a different screw size.

Metric to Imperial Screw Converter

What does a metric-to-imperial screw converter do?

It maps common metric fastener callouts (for example M6) to the closest UNC/UNF sizes used in imperial hardware. Results are practical workshop equivalents, not mixed-thread substitutes.

Choose a direction and screw size to see the closest common equivalent instantly.

Converter

Why use this tool?

Fast lookup for common workshop conversions
Useful for mixed metric and imperial projects
Touch-friendly design for mobile and shop use

Bolt & screw size reference pages — detailed specs for M6, 1/4-20, and more. Spanish: perno M6.

Related guides

Metric vs Imperial Fasteners
Thread Types Explained