Calculadora de Projetor (Throw Ratio)

The Projector Calculator (Throw Ratio) determines the ideal distance between the projector and the screen to achieve a desired image size. It uses the projector's throw ratio, a technical specification indicating the image width relative to distance. For example, a throw ratio of 1.5 means every 1 meter of distance yields a 1-meter-wide image. The formula is simple: distance = throw ratio × screen width. This tool is essential for setting up home theaters, classrooms, or offices, ensuring the projector is correctly positioned.

How to use the calculator: enter your projector's throw ratio (found in the manual or spec sheet) and the desired screen width. The calculator returns the minimum distance needed between the projector lens and the screen. Note that the throw ratio can be a fixed value (for standard lenses) or a range (for zoom lenses). If it's a range, use the minimum for the shortest distance and the maximum for the longest. This helps plan installation considering furniture, lighting, and available space.

When to use this calculator? Whenever installing a new projector or repositioning an existing one. For example, in home theaters to check if the projector fits the room without blocking walkways. In offices, to ensure the screen is visible to everyone. It's also useful when choosing a projector, comparing models based on throw ratio. Caution: the calculator assumes the screen is perpendicular to the projector; tilts or anamorphic lenses require additional adjustments. Always check manufacturer specs to avoid positioning errors.