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

Critical Angle Calculator

Calculate the critical angle beyond which light undergoes total internal reflection at the boundary between a denser and a rarer medium. Essential for fiber optics, prism design, and understanding optical phenomena.

Denser Medium Refractive Index

Rarer Medium Refractive Index

Fill in the required fields to see your result.

Optics

Depth of Field Calculator

Determine the depth of field, hyperfocal distance, and near/far focus limits for any lens and camera combination. Ideal for photographers choosing aperture and focus distance to keep subjects sharp.

Focal Length (mm)

F-Number (Aperture)

Focus Distance (mm)

Circle of Confusion

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Key differences

	Critical Angle Calculator	Depth of Field Calculator
Category	Optics	Optics
Inputs required	2	4
Result	Critical Angle (°)	Depth of Field (mm)
What it does	Calculate the critical angle beyond which light undergoes total internal reflection at the boundary between a denser and a rarer medium. Essential for fiber optics, prism design, and understanding optical phenomena.	Determine the depth of field, hyperfocal distance, and near/far focus limits for any lens and camera combination. Ideal for photographers choosing aperture and focus distance to keep subjects sharp.