# How do you calculate throwing distance?

## How do you calculate throwing distance?

D/W=T (distance divided by width equals throw) or TxW=D (throw multiplied by width equals distance).

## What is the formula used to calculate the projector is ideal throw distance?

For any given projector, the width of the image (W) relative to the throw distance (D) is know as the throw ratio D/W. So for example, the most common projector throw ratio is 2.0. This means that for each foot of image width, the projector needs to be 2 feet away or D/W = 2/1 = 2.0.

**What is the average throw distance of a projector?**

Among all existing projectors, a throw ratio around 1.13:1 is the most common design that has the lens in the front of the projector. These designs can require distances as short as 8.2ft to project a 100-inch screen, which is the most common throw distance setup in limited space or small apartments.

### How far should a projector be from a 72 inch screen?

Projection Distance

16:10 Aspect Ratio | ||
---|---|---|

Screen or image size | Projection distance (1) Wide to Tele | Offset from lens center (2) |

60 inches | 24 to 33 inches (61 to 84 cm) | 3.7 inches (9 cm) |

70 inches | 28 to 39 inches (72 to 99 cm) | 4.4 inches (11 cm) |

80 inches | 33 to 45 inches (83 to 113 cm) | 5 inches (13 cm) |

### How far does a projector have to be from a 120 screen?

Projection Distance

Screen or image size | Projection distance (1) Minimum to Maximum | Screw hole number (2) |
---|---|---|

80 inches (203 cm) | 110 to 121 inches (281 to 306 cm) | 4 |

100 inches (254 cm) | 138 to 151 inches (351 to 383 cm) | 3 |

120 inches (305 cm) | 166 to 181 inches (422 to 461 inches) | 2 |

150 inches (381 cm) | 208 to 227 inches (529 to 577 cm) | 1 |

**How far does a projector have to be from a 200 screen?**

Projection Distance

Screen or image size (1) | Projection distance (2) Wide to Tele |
---|---|

100 inches (254 cm) | 116 to 188 inches (295 to 478 cm) |

120 inches (304.8 cm) | 139 to 226 inches (354 to 575 cm) |

150 inches (381 cm) | 174 to 283 inches (443 to 719 cm) |

200 inches (508 cm) | 233 to 378 inches (591 to 959 cm) |

#### How far does projector have to be from 120 screen?

#### How far should you sit from a 120 inch screen?

12 foot

With one caveat..which we will get to in a bit. If your family likes being near the center of the theater, then choose a screen size which has about 10 inches of diagonal for each foot of viewing distance. That’s about 120-inch diagonal for a 12 foot viewing distance.

**How far back should you sit from a 100 inch screen?**

Projection Distance

Screen or image size (1) | Projection distance (2) Wide to Tele |
---|---|

60 inches (152.4 cm) | 69 to 113 inches (176 to 286 cm) |

80 inches (203.2 cm) | 93 to 150 inches (235 to 382 cm) |

100 inches (254 cm) | 116 to 188 inches (295 to 478 cm) |

120 inches (304.8 cm) | 139 to 226 inches (354 to 575 cm) |

## How far away should a projector be from a 100 inch screen?

around 10.5ft

How Far Should a Projector Be From a 100-Inch Screen? Ideally, you should use your projector’s manual or manufacturer’s website to calculate the best distance from the screen for your particular projector. A good rule of thumb for a 100-inch screen is to have your projector between 122 and 133 inches or around 10.5ft.