Molaridade
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
n / V
About this calculator
The molarity calculator helps determine the concentration of a solution in moles per liter (mol/L). To use it, input the amount of solute (n, in moles) and the solution volume (V, in liters). The formula used is M = n/V, where M is molarity. It's ideal for laboratory calculations, such as preparing solutions with specific concentrations or adjusting reactants in chemical experiments.
If your goal is to find the amount of solute or required volume, the calculator can also solve the equation by isolating the desired variables. For example, if you know the molarity and volume, you can calculate the moles of solute. Ensure all units are in the correct system (liters for volume and moles for quantity) for accurate results.
Common precautions include not confusing mass (grams) with moles and verifying that the volume is in liters. For diluted solutions or substances with impurities, calculations must be adjusted based on solute purity. Molarity is sensitive to temperature changes, so in some cases, you may need to correct the volume using the solution's density for precise measurements.
Frequently asked questions
What is molarity?
Molarity is a measure of solution concentration expressed as moles of solute per liter of solution (mol/L).
How to use the molarity calculator?
Enter two of the three values (molarity, moles, or volume), and the calculator will determine the third. Ensure units are compatible.
Do I need to convert units before using the calculator?
Yes, volume must be in liters and amount in moles. Perform conversions if necessary before inputting values.
Can I calculate volume with molarity and mass?
Yes, but first convert the mass to moles using the substance's molar mass before applying the formula.
Does the calculator account for solute purity?
No directly. Molarity assumes the solute is pure. Adjust calculations manually if impurities are present.