Concentration Converter
Convert between molarity and mass concentration
rate：1 mM = 1 ppm
Results in all units
25 mM| Unit | Symbol | Value |
|---|---|---|
| Common | ||
| mol/L | M | 0.025 |
| mmol/L | mM | 25 |
| g/L | g/L | 0.025 |
| mg/L | mg/L | 25 |
| Parts per million | ppm | 25 |
About Concentration Conversion
25 mmol/L equals 25 Parts per million. The conversion rate is 1 mM = 1 ppm. You can switch to any other unit of this category above and see the result instantly.
This converter supports 5 units in total, including mol/L, mmol/L, g/L, mg/L, and covers metric, imperial and Chinese traditional systems.
Used in lab solution preparation, water quality testing (e.g., mg/L), and agricultural pesticide dilution.
All values follow internationally accepted definitions and are rounded to the decimals you choose. The calculation runs entirely in your browser, so nothing is uploaded or stored on a server.
History & Background
The precise concept of concentration evolved with analytical chemistry, from early Baume degrees to the modern molarity system.
Conversion Details
Concentration measures solute content. Common units include mol/L (M), g/L, and ppm.
Conversion between mass and molarity requires molar mass; this tool assumes a density of 1kg/L.