Concentration Unit Converter

• Free online concentration unit converter — instantly convert between 15+ units including percentage, permille, ppm, ppb, ppt, ppq, g/L, mg/L, μg/L, ng/L, g/mL, kg/m³ and mg/dL; grouped into common, parts-per, mass/volume and medical categories, with handy real-world reference values (seawater, blood alcohol, blood glucose and more)

1. Open the tool page — no download or installation needed
2. Type a value into any single concentration unit field (or click a unit badge to focus its input)
3. All other unit fields update instantly with the equivalent values; click "Reset All" to clear and start over

• This tool is completely free and requires no sign-up
• Everything runs locally in your browser — your data never leaves your device

Free online concentration unit conversion tool supporting real-time conversion between percentage, permille, ppm, ppb, ppt, ppq, g/L, mg/L, μg/L, ng/L, g/mL, kg/m³, mg/dL and more.

Open the tool page — no download or installation needed Type a value into any single concentration unit field (or click a unit badge to focus its input) All other unit fields update instantly with the equivalent values; click "Reset All" to clear and start over

This tool is completely free and requires no sign-up Everything runs locally in your browser — your data never leaves your device

Yes, Concentration Unit Converter is completely free. No download or installation required — it runs right in your browser.