Lighting Calculator

The Lighting Calculator helps users determine the optimal number and type of light bulbs needed for a room, along with recommended mounting heights, based on room dimensions and lighting preferences.

Use Our Lighting Calculator

Lighting Calculator Usage Guide

Welcome to the Lighting Calculator! This tool will help you determine the optimal number of bulbs and total wattage required to adequately light up your space. Follow these steps to use the calculator effectively:

Step 1: Enter Room Dimensions

  1. Room Length: Enter the length of the room in meters. Ensure this value is between 0.1 and 100 meters and is required for the calculation.
  2. Room Width: Enter the width of the room in meters. Ensure this value is between 0.1 and 100 meters and is also required for the calculation.
  3. Room Height: Enter the height of the ceiling in meters. This value must be between 1.5 and 20 meters, and is essential for determining the recommended mounting height.

Step 2: Select Room Type

Select the type of room from the available options. The room type helps determine the required lumens per square meter and is mandatory. The options include:

  • Living Room (100 lumens/m²)
  • Kitchen (150 lumens/m²)
  • Bedroom (75 lumens/m²)
  • Home Office (200 lumens/m²)
  • Workshop (300 lumens/m²)

Step 3: Choose Light Bulb Type

Select the type of light bulb you intend to use. The light bulb type affects the efficiency and number of bulbs needed, and is also required. The options are:

  • LED (15 lumens/watt)
  • CFL (20 lumens/watt)
  • Incandescent (60 lumens/watt)

Step 4: Calculate Results

Once all the inputs are correctly filled, the calculator will automatically compute the following results:

  1. Room Area: Calculated as the product of room length and width. Displayed in square meters (m²) with two decimal places.
  2. Required Lumens: Calculated by multiplying the room area by the selected room type’s lumen requirement. Displayed as a whole number with ‘lumens’ as the suffix.
  3. Number of Bulbs Needed: Calculated by dividing the total lumens by the product of light bulb efficiency and a constant (50), rounded up to the nearest whole number.
  4. Total Wattage: Calculated by multiplying the number of bulbs needed by the light bulb efficiency. Displayed as a whole number with ‘watts’ as the suffix.
  5. Recommended Mounting Height: computed as 80% of the room height and displayed in meters with two decimal places.

This guide should enable users to accurately determine the lighting requirements for their room using the provided calculator. Be sure to review each input for accuracy.