Lumen or Watt? Understanding Modern Lighting Measurements

The Shift from Watts to Lumens

In the world of modern LED lighting, watts are no longer the go-to measurement for determining a lamp's brightness. Instead, the focus has shifted to lumens – a unit of measurement that provides a much clearer indication of a lamp's brightness.

Why Lumens Matter

Lumens offer a more precise measurement of a lamp's brightness compared to wattage. Modern LED lamps typically display significantly lower wattage values than traditional incandescent bulbs, often ranging between 5 and 10 watts. However, these wattage values don't accurately reflect the brightness you can expect.

Understanding Lumen Values

To better understand the brightness of a lamp, consider the lumen value. Lumen (lm) is the unit of measure for luminous flux and is the decisive value for a lamp's brightness. A simple rule of thumb is that conventional wattage multiplied by 10 equals the lumen value.

Recommended Lumen Values for Basic Lighting

When choosing lighting for your space, think about the purpose of the area, the ambiance you want to create, and the amount of light needed. Here are some recommended lumen values based on years of field experience and independent tests:

Living Area/Hallway: 100 lm/m²
Kitchen/Bathroom: 300 lm/m²

Considering Light Colour

In addition to lumens, consider the light colour of any new luminaire you buy. Light colour, measured in Kelvin (K), describes the type of light emitted – from yellowish (warm) to bluish (cool). Cooler light colours may appear brighter but might not be as cosy as warmer tones.

The Future of Lighting

As lighting technology continues to evolve, understanding the importance of lumens over watts will help you make more informed decisions. Embracing LED technology not only enhances energy efficiency but also offers greater control over the lighting ambiance in your space.