Converters

Units, measurements and file formats: which free online tools actually convert correctly, where rounding quietly ruins a result, and why metric and imperial disagree about a "ton" and a "pint".

Converters Text tools Passwords and privacy QR codes and sharing Dates and time

3 guides

A close-up of a laptop screen showing two overlapping file icons on a clean desk, with a notebook and pen beside it.

Converting Files Online: What Free Online Tools Lose

A no-nonsense guide to what free online file converters really discard, which formats are lossy, and when to keep your documents off the web.

Converters 8 min read

Two clear measuring jugs on a kitchen counter, one filled to the US pint mark and the other to the imperial pint mark, showing visibly different liquid levels.

Metric vs Imperial: A Practical Guide for Users of Free Online Tools

A practical guide to metric and imperial units that share a name but not a size, with a comparison table, conversion rules, and common traps.

Converters 8 min read

A close-up of a metal ruler and a tape measure lying on a wooden workbench, showing both metric and imperial markings side by side.

Unit Conversion: A Practical Guide to Free Online Tools

Learn how conversion factors work, when a free online converter is safe, and which jobs need a spreadsheet, native app or professional instead.

Converters 8 min read