Use this cinematography or projection calculation to plan image geometry, exposure, timing, storage, film footage, or presentation from explicitly stated camera and display parameters.

Width Millimeters (mm)

Required number input.

Height Millimeters (mm)

Required number input.

Unreduced width-to-height aspect ratio for an image or screen measured in matching units. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Width To Height Ratio

The resulting width to height ratio returned as a number.

• Aspect-ratio and anamorphic calculations depend on whether dimensions describe source pixels, pixel aspect ratio, active image, container, projection aperture, or final crop. Delivery specifications may require padding or protected composition.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Confirm critical values with the actual camera, lens, codec, projector, and delivery specification, then run a camera or projection test under representative conditions.

• Projector Throw Ratio

  Projector throw ratio as lens-to-screen distance divided by projected image width in matching units.

• Scope Crop Factor

  Fraction of source image height retained when cropping to a wider target aspect ratio at unchanged width.

• Aspect Ratio From Resolution

  Display width-to-height aspect ratio from integer pixel dimensions; does not simplify to a fraction.