Enter the molarity and molecular weight into the calculator to determine the concentration in µg/mL, or enter the concentration and molecular weight to find the molarity.

Molar To μg/mL Calculator

Enter any 2 values to calculate the missing variable

Molar to µg/mL Formula

The following formula is used to convert molarity to concentration in µg/mL.

C = M * MW * 1000

Variables:

  • C is the concentration in µg/mL
  • M is the molarity in mol/L
  • MW is the molecular weight in g/mol

To calculate the concentration in µg/mL, multiply the molarity by the molecular weight and then multiply by 1000.

Molarity to μg/mL Conversion Table (μg/mL = μM × MW × 0.001)
Molarity (μM) Molecular Weight (g/mol) Concentration (μg/mL)
0.11000.010
0.51000.050
11000.100
21000.200
51000.500
0.1180.160.018
0.5180.160.090
1180.160.180
2180.160.360
5180.160.901
0.12500.025
0.52500.125
12500.250
22500.500
52501.250
0.15000.050
0.55000.250
15000.500
25001.000
55002.500
* Rounded to 3 decimals. Formula: μg/mL = μM × Molecular Weight (g/mol) × 0.001. Example MWs include glucose (180.16 g/mol).

What is Molarity?

Molarity (M) is a measure of the concentration of a solute in a solution, or of any chemical species, in terms of amount of substance in a given volume. It is expressed in units of moles per liter (mol/L). Molarity is a convenient way to express the concentration of a solute in a solution, especially for reactions in aqueous solutions.

How to Calculate Concentration in µg/mL?

The following steps outline how to calculate the concentration in µg/mL.


  1. First, determine the molarity of the solution (M).
  2. Next, determine the molecular weight of the solute (MW).
  3. Next, calculate the concentration using the formula C = M * MW * 1000.
  4. Finally, calculate the concentration in µg/mL.
  5. After inserting the values and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Molarity (M) = 0.01 mol/L

Molecular Weight (MW) = 180 g/mol