# Lighting Calculator Examples

Here you find some nice
lighting calculator examples you can build with this *free calculator tool*. Some technical/template features are only in Pro-Package available.

## Usefull Calculation Examples

## LED calculator for Christmas lighting

Christmas: Calculate the number of lights needed and the cost of electricity for a Christmas tree light chain that may also be a gift.

**Topics:**Lighting, Holidays, Christmas, Light, LED |

**Status:**free to use

## Payback for humanT light solutions

Comparison of classic lighting system and Human Centric Lighting system incl. estimation of a payback calculation as a first approximation.

**Topics:**Building, Living, Lighting, Electrics, Light |

**Status:**free to use

## Converter luminosity lumens to watts power

Use this converter to convert the luminosity (lumens) to watts (power) of an energy-saving lamp compared to a conventional light bulb.

**Topics:**Building & Living & Household & Electrical & Energy Saving & Lighting |

**Status:**free to use

## Gemstone cut: adjust angle of crown according to Refracting Index (RI)

Calculate the angles or the modified "refracting index" when faceting gemstones.

**Topics:**Hobby & Leisure, Mathematics, Gemstones |

**Status:**free to use

## How much do lights cost after a certain period

Online calculator for extrapolating the costs of various illuminants ("bulb") over a calculation period of e.g. 10 years.

**Topics:**Building & Living, Energy, Lighting, Save Electricity |

**Status:**free to use

## Special Technical Solutions

**Perhaps you are more interested in one of the following topics:**