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

Optical Resolution Calculator

Determines the minimum resolvable distance between two point sources through a microscope or lens using the Rayleigh criterion. Essential for microscopists, optical engineers, and anyone specifying imaging system performance.

Light Wavelength (nm)

Numerical Aperture

Immersion Medium

Objective Type

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Optics

Numerical Aperture Calculator

Calculate the numerical aperture (NA) of an optical fiber from the refractive indices of its core and cladding. NA determines light-gathering ability and the maximum acceptance angle of the fiber.

Core Refractive Index

Cladding Refractive Index

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Key differences

	Optical Resolution Calculator	Numerical Aperture Calculator
Category	Optics	Optics
Inputs required	4	2
Result	Lateral Resolution (μm)	Numerical Aperture
What it does	Determines the minimum resolvable distance between two point sources through a microscope or lens using the Rayleigh criterion. Essential for microscopists, optical engineers, and anyone specifying imaging system performance.	Calculate the numerical aperture (NA) of an optical fiber from the refractive indices of its core and cladding. NA determines light-gathering ability and the maximum acceptance angle of the fiber.