CONVERSION · EN
Batch unit converter — convert measurement lists
Convert up to 5,000 measurements at once with unit detection, visible errors and CSV export.
Guide
Formula
Each row is parsed independently and converted with the same catalogue used by single-measurement mode.
Batch mode is designed for values copied from a spreadsheet or document. A unit written on a row always takes precedence; for bare numbers, you can choose a common unit. Invalid or ambiguous rows remain visible instead of being silently dropped.
Note : CSV export is invalidated as soon as the list or settings change so stale results are not downloaded.
Example : 19 mm
Related conversions
Measurement
Enter a value and its unit.
Calculation details and sources are available below the result.
Enter a measurement: its unit is detected automatically.
Useful conversions
Approximate fraction
This approximation certifies neither a part nor an instrument’s accuracy.
Fractions and precision
| Step | Fraction | Error in mm | Limit |
|---|
Error = approximate fraction − requested measurement. Exact comparison before display rounding.
A list
One measurement per line. The unit is detected independently on every line, including common typos.
Applies only to numbers without a unit. Written units always take precedence.
For bare numbers, choose their common unit. No unit is guessed.
No results.
Add your measurements, choose the targets, then convert.
| Line | Original | Detected | To | Result | Status |
|---|