Anti-streptolysin O unit converter

Anti-streptolysin O (post-streptococcal disease)

Converter

Enter a value in any unit and all other units fill in.

Conversion formulas

Good to know

Anti-streptolysin O is reported in IU/mL or kIU/L. The page converts between the units only.

• 1 kIU/L = 1 IU/mL; the two notations are interchangeable.
• No established reference range is listed here; compare your result only with the range printed on your own report.

Reference range

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Source: BIPM: SI prefixes · Last reviewed: 2026-10-19

Note from the source: No established reference range; the page converts units only. Both units describe the same quantity and differ only by a prefix.