# TV Size & Viewing Distance Calculator > Estimate a practical viewing-distance range from TV size and resolution. Page: https://askcalculators.com/calculator/tv-size-calculator/ Definition: https://askcalculators.com/calculator/tv-size-calculator/definition.json JSON Schema: https://askcalculators.com/calculator/tv-size-calculator/schema.json Version: 1.0.0 Maintained by: AskCalculators (software project; not a credentialed reviewer) Qualified review: pending. Automated checks do not establish professional approval. Page status: Live Review status: Pending ## Use Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation. Example: https://askcalculators.com/calculator/tv-size-calculator/?screenSize=55&resolution=4k ## Inputs - screenSize: Screen size; type=number; required; default=55; min=10; max=200 - resolution: Resolution; type=select; required; default=4k; values=4k|1080p ## Outputs - recommendedRange: Suggested viewing range; format=text; primary - minimumFeet: Closer distance; format=number - maximumFeet: Farther distance; format=number - minimumMeters: Closer distance; format=number - maximumMeters: Farther distance; format=number ## Formula Viewing distance = screen diagonal × resolution range - 4K / UHD: 1.0× to 1.5× the diagonal - 1080p / Full HD: 1.5× to 2.5× the diagonal This is a general planning range. Room layout, eyesight, content, and preferred field of view can change the best distance. ## Rules - Empty optional inputs are undefined, not zero. - Hidden conditional inputs are ignored. - Do not invent missing required inputs. Notice: Viewing-distance guidance varies by source and viewing preference. Use this result as a planning estimate.