Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Beer-Lambert Law Calculator

Determine the concentration of a solution from its measured absorbance, extinction coefficient, and path length using Beer-Lambert law. Essential for spectrophotometry and quantitative analytical chemistry.

Absorbance (A) (AU)

Molar Extinction Coefficient (ε) (M⁻¹cm⁻¹)

Path Length (l) (cm)

Dilution Factor

Fill in the required fields to see your result.

Chemistry

Ideal Gas Law Calculator

Solve the ideal gas equation PV = nRT for whichever variable you need — pressure, volume, temperature, or moles — given the other three. The foundational equation for any gas-phase chemistry or thermodynamics problem at moderate temperatures and pressures.

Pressure (P) (atm)

Volume (V) (L)

Temperature (T) (K)

Gas Constant (R)

Solve For

Fill in the required fields to see your result.

Key differences

	Beer-Lambert Law Calculator	Ideal Gas Law Calculator
Category	Chemistry	Chemistry
Inputs required	4	5
Result	Concentration (M)	Calculated Value (varies)
What it does	Determine the concentration of a solution from its measured absorbance, extinction coefficient, and path length using Beer-Lambert law. Essential for spectrophotometry and quantitative analytical chemistry.	Solve the ideal gas equation PV = nRT for whichever variable you need — pressure, volume, temperature, or moles — given the other three. The foundational equation for any gas-phase chemistry or thermodynamics problem at moderate temperatures and pressures.