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Molar to millimolar conversion is a simple unit conversion used in chemistry to express concentrations in different scales. One molar (M) equals 1000 millimolar (mM), making millimolar measurements more practical for many laboratory applications, especially when working with dilute solutions.
The calculator uses the conversion formula:
Where:
Explanation: The conversion is based on the metric system where "milli" represents one-thousandth (1/1000) of the base unit.
Details: Accurate concentration conversion is essential in chemical preparations, laboratory experiments, pharmaceutical formulations, and biological assays where precise measurements are critical for reproducible results.
Tips: Enter the molar concentration value in the input field. The calculator will automatically convert it to millimolar concentration. All values must be valid (non-negative numbers).
Q1: Why convert from molar to millimolar?
A: Millimolar units are often more practical for laboratory work with dilute solutions, making calculations and measurements more manageable.
Q2: Is this conversion specific to water?
A: While this calculator is designed for water solutions, the conversion factor (×1000) applies universally to all substances when converting between molar and millimolar concentrations.
Q3: How precise is this conversion?
A: The conversion is mathematically exact - 1 M always equals 1000 mM, regardless of the substance being measured.
Q4: Can I convert millimolar back to molar?
A: Yes, simply divide the millimolar value by 1000 to get the molar concentration.
Q5: When would I use molar instead of millimolar?
A: Molar concentrations are typically used for more concentrated solutions, while millimolar is preferred for dilute solutions commonly encountered in biological and biochemical applications.