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Osmotic Pressure Calculator

Calculate the osmotic pressure of a solution using the van't Hoff equation. Used in biology, medicine, and chemical engineering to understand solute movement across membranes.

Molar concentration (M)

Temperature (K)

van't Hoff factor

Fill in the required fields to see your result.

Chemistry

Molecular Weight Calculator

Compute the molecular weight (molar mass, g/mol) of a CHON-containing molecule from the number of carbon, hydrogen, oxygen, and nitrogen atoms in its formula, with an optional isotope-correction factor. Useful for routine stoichiometry on organic and biological molecules where C, H, O, and N dominate the elemental composition.

Carbon Atoms (C) (atoms)

Hydrogen Atoms (H) (atoms)

Oxygen Atoms (O) (atoms)

Nitrogen Atoms (N) (atoms)

Isotope Correction

Fill in the required fields to see your result.

Key differences

	Osmotic Pressure Calculator	Molecular Weight Calculator
Category	Chemistry	Chemistry
Inputs required	3	5
Result	Osmotic Pressure (atm)	Molecular Weight (g/mol)
What it does	Calculate the osmotic pressure of a solution using the van't Hoff equation. Used in biology, medicine, and chemical engineering to understand solute movement across membranes.	Compute the molecular weight (molar mass, g/mol) of a CHON-containing molecule from the number of carbon, hydrogen, oxygen, and nitrogen atoms in its formula, with an optional isotope-correction factor. Useful for routine stoichiometry on organic and biological molecules where C, H, O, and N dominate the elemental composition.