Besides, Projector1 throw distance calculator innovatively provides the viewing distance for your reference. Fill in any numbers you have(whatever it is throw distance, screen size, the width or height of the screen), and then you will know the placement of your projector for your ideal screen size. Projector1 size dimensions calculator tool is the best projector calculation tool with a simple and easy-to-understand interface. Viewing Distance refers to the distance between your position to the screen. The preferred Aspect Ratio of projector is 16:9. In other words, Aspect Ratio= Screen Width/Screen Height. What is Aspect Ratio?Īspect Ratio is the ratio of Screen Width to Screen Height. Screen Height is the vertical length of your screen. Screen Width is the horizontal length of your screen. The size of projection image of your projector. Throw distance is the distance from projector lens to the screen. The greater the Throw Ratio, the farther the distance required for the same screen size.įor Example, your desired screen is 100'' if the throw ratio is 0.39:1, the throw distance is just 86.64cm, but if the throw ratio is 1.2:1, a throw distance of 266.58cm is required.Ĭurrently, the mainstream Throw Ratio for home projectors is 1.2:1. Throw Ratio =Throw Distance / Screen Width. Throw ratio is the ratio of Throw Distance to the Screen Width. Projector1 projector size dimensions calculator is a tool for helping you calculate the throw distance and projection image size, so that to suggest the best placement of your projector and viewing distance. The throw distance td is equal to the throw ratio tr times the screen width w.Calculate What can Projector1 projector calculator do? Given the projector throw ratio and the screen’s width, the following formula will calculate the throw distance. The minimum and maximum throw ratio should be documented for every projector and is needed to calculate the throw distance. The distance varies by the lens used in the projector and the screen’s size. How to Calculate Projector Throw DistanceĪ projector needs to be installed a specified distance from the screen to allow the image to fill the screen correctly. Use the following chart as a guide for choosing the right screen brightness for your room.Ĭhart showing the optimal screen brightness for various types of rooms 0-15 ft-L You might be wondering how many foot-lamberts you need for a good experience? SMPTE recommends at least 16 foot-lamberts for a dark cinema. The brightness in foot-lamberts is equal to the projector lumens times the screen gain, divided by the area of the screen in square feet. Use the following formula to calculate the brightness of your screen.įt-L = lumens × gain / screen square feet Some screens also incorporate gain to increase the amount of light reflected to the viewers, increasing the brightness. The projector’s luminosity and the size of the screen both contribute to the overall brightness. The screen’s brightness is typically measured in foot-lamberts or candela per square meter. You can also use an aspect ratio calculator to solve the ratio.Ī projector screen’s brightness is one of the most important factors in a good cinematic experience. Then, divide each dimension by the greatest common factor to get each part of the aspect ratio. Find the greatest common factor between the screen’s width in pixels or inches and the height in pixels or inches. It’s possible to calculate a screen’s aspect ratio given either the image’s resolution or the width and height. Don’t forget to account for the ideal screen height for the optimal viewing experience. We go into much more detail about calculating screen size on our screen size calculator. Screen height = AR h × diagonal / √(AR w 2 + AR h 2) Use our projector calculator to calculate the suggested viewing distance, screen size, aspect ratio, screen brightness, and throw distance. The screen width is equal to the aspect ratio width AR w times the screen diagonal divided by the square root of the aspect ratio width AR w squared plus the aspect ratio height AR h squared. Screen width = AR w × diagonal / √(AR w 2 + AR h 2) Use the formulas below to calculate a screen’s width and height. You can calculate the size of a projector screen given the diagonal measurement using the aspect ratio and the Pythagorean theorem. Try our TV size and distance calculator to calculate the optimal viewing distance for a television. The viewing distance d is equal to the screen width w divided by 2, times the tangent of 180 minus the viewing angle θ divided by 2. Use the following formula to calculate the viewing distance for a given viewing angle. The Society of Motion Picture and Television Engineers (SMPTE) recommends a viewing angle of 30°. THX recommends a viewing angle of 26° to 40°, with a preferred angle of 36° to 40° if possible. Various standards define the proper viewing angle for viewing content on a projection screen. The optimal viewing distance from a screen depends on the screen’s width.
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