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Diffraction Grating Calculator

Find the diffraction angle for any order of light passing through a grating using the grating equation. Ideal for optics lab work, spectroscopy setups, and physics coursework.

Wavelength (nm)

Grating Spacing (nm)

Diffraction Order

Fill in the required fields to see your result.

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

Fill in the required fields to see your result.

Key differences

	Diffraction Grating Calculator	Numerical Aperture Calculator
Category	Optics	Optics
Inputs required	3	2
Result	Diffraction Angle (°)	Numerical Aperture
What it does	Find the diffraction angle for any order of light passing through a grating using the grating equation. Ideal for optics lab work, spectroscopy setups, and physics coursework.	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.