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

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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Optics

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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Key differences

	Numerical Aperture Calculator	Optical Resolution Calculator
Category	Optics	Optics
Inputs required	2	4
Result	Numerical Aperture	Lateral Resolution (μm)
What it does	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.	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.