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
Enter a value and pick the source and target units. The conversion engine uses Molarity (M) as the canonical hub: it converts the input to M, then from M to the target unit. For cross-family conversions (molar ↔ mass), the solute's molar mass is required — you can type it manually or pick from 15 molecule presets (glucose, BSA, IgG, dsDNA, etc.). For nucleic acids, the molecular weight is calculated automatically from the length in base pairs (650 Da/bp for dsDNA, 330 Da/nt for ssDNA). The 'Show all equivalents' panel displays the value in all 16 units simultaneously.