THE NUMBERS, EXPLAINED
How to use this calculator.
Counts JavaScript UTF-16 code units in each supplied path, including separators. This is not a platform-path validator; supply a limit using the same counting convention.
Start with your inputs
Enter file paths, one per line, supplied maximum path length (utf-16 code units). Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| File paths, one per line | /a/file.txt /folder/long-name.txt |
| Supplied maximum path length (UTF-16 code units) | 15 |
A worked example
With the example inputs above, path lengths (utf-16 code units) is 11, 21. Change the inputs to explore your own scenario.
| Result | Example answer |
|---|---|
| Path lengths (UTF-16 code units) | 11, 21 |
| Path row numbers exceeding limit | 2 |
| Longest supplied path length | 21 |
How this is calculated
Path lengths (UTF-16 code units)
Count code units in each complete line, without trimming path spaces.
Path row numbers exceeding limit
Compare each measured path length with the supplied limit.
Longest supplied path length
Take the largest measured path length.
Symbols and units
- a
- File paths, one per line
- b
- Supplied maximum path length (UTF-16 code units)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions and limits
Counts JavaScript UTF-16 code units in each supplied path, including separators. This is not a platform-path validator; supply a limit using the same counting convention.
Calculations use the values you enter. Blank or invalid inputs show an error instead of silently substituting zero. Results are displayed to useful precision; calculations retain the underlying numeric precision.
Questions about this tool
What does the result tell me?
Path lengths (UTF-16 code units); Path row numbers exceeding limit; Longest supplied path length. The result applies to the method and inputs described above. Check the units and assumptions before using it in a decision.
Why might another calculator differ?
Differences in units, rounding, timing or model definitions can produce different answers. Compare the input definitions and the method, rather than only the final number. For this tool: Counts JavaScript UTF-16 code units in each supplied path, including separators. This is not a platform-path validator; supply a limit using the same counting convention.
Are my inputs stored or sent to AI?
Calculations on this page happen in your browser. The separate AI question finder sends its submitted conversation to OpenAI; these calculator fields are not sent. Favourites and recent tool names are stored locally. A shared link contains the inputs you choose to include.
Further reading
MDN String length — UTF-16 code units ↗
Background reading; this does not imply endorsement or independent review of SumFizz.
Review status
Software example and browser checks are recorded in our quality report. No external expert review is claimed. Created with coding assistance; calculations run as ordinary browser code.
Read the quality report →