Concentration Converter: Molarity, mg/mL, ppm and more
Cross-conversion tool for 16 chemical and biological concentration units. Includes common molecule presets, automatic molar mass calculation for nucleic acids, and a multi-equivalent display panel.
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When to use this tool
Preparing lab solutions, converting molar and mass units for proteins and nucleic acids, calculating copies/µL for qPCR, converting to Normality for titrations, and computing enzyme activity.
How it works
Type a value and pick the source and target units: the result updates instantly, and the 'Show all equivalents' panel shows the same value across all 16 units at once. Converting between molar and mass units (M ↔ g/L) needs the solute's molar mass: type it in, or pick one of the 15 molecule presets (glucose, BSA, IgG, dsDNA, etc.). For nucleic acids, molecular weight is estimated from the length in base pairs (650 Da/bp for dsDNA, 330 Da/nt for ssDNA). Conversions that need an extra value —molar mass, equivalents or specific activity— ask for it explicitly when required.