Unit Converter Online
Choose a category and type in either value field to convert instantly. Pin a pair or convert a CSV list.
Convert units
Quick pairs
Show factor and formula
Batch conversionPaste a list or CSV
Enter one number per line, or import a CSV with values in the first column (an optional “value” header). Up to 2,000 rows; use a dot for decimals.
| Row | Input | Result |
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How to convert units
Choose a measurement
Choose length, mass, area, volume, speed, data or temperature.
Select units and type a value
Search by name or symbol and use the swap button to reverse the pair.
Read the formula or copy
The result updates as you type; pin the pair or paste a list for multiple values.
What is the difference between MB and MiB?
The tool uses decimal units for KB, MB, GB and TB, and binary units for KiB, MiB, GiB and TiB. For example, 1 MB = 1,000,000 bytes, while 1 MiB = 1,048,576 bytes. You can convert between the systems, but their unit names stay distinct.
Formulas and precision
Ordinary units use factors relative to a base unit. Temperature uses formulas with offsets, so a simple multiplier does not apply; values below 0 K are rejected. Displayed results use up to 12 significant digits and may be rounded.
Data processing and pinned pairs
Calculations and CSV content are processed in your browser without a conversion API. Only pinned pairs are kept in this device’s local storage.
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