48 lux corresponds to 48 lumens when the illuminated area is exactly 1 square meter. This is because lux measures illuminance (lumens per square meter), so multiplying lux by the area in square meters gives lumens.
Lux measures the amount of light spread over an area, while lumens measure the total light output. To convert lux to lumens, you multiply the lux value by the surface area illuminated. Without knowing the area, lux alone can’t be converted precisely to lumens.
Conversion Tool
Result in lumens:
Conversion Formula
The formula to convert lux to lumens depends on the area illuminated. Since lux measures lumens per square meter, the formula is:
Lumens = Lux × Area (in square meters)
This works because lux is the luminous flux (lumens) spread evenly over the surface area. If you know the surface area, multiply the lux value by that area to get lumens.
For example, if an area of 2 square meters is illuminated at 48 lux, the lumens would be:
- Lux = 48
- Area = 2 m²
- Lumens = 48 × 2 = 96 lumens
Conversion Example
- Convert 30 lux over 3 m²:
- Given: Lux = 30, Area = 3 m²
- Step 1: Multiply lux by area → 30 × 3
- Step 2: Calculate → 90 lumens
- Result: 30 lux correspond to 90 lumens on 3 m².
- Convert 60 lux over 1.5 m²:
- Lux = 60
- Area = 1.5 m²
- Lumens = 60 × 1.5 = 90 lumens
- Convert 50 lux over 0.8 m²:
- Lux = 50
- Area = 0.8 m²
- Lumens = 50 × 0.8 = 40 lumens
- Convert 75 lux over 4 m²:
- Lux = 75
- Area = 4 m²
- Lumens = 75 × 4 = 300 lumens
Conversion Chart
This chart shows lux values from 23.0 to 73.0 converted into lumens assuming an area of 1 square meter. Read horizontally to find the lumens result by multiplying the lux value by the area.
| Lux | Lumens (Area = 1 m²) |
|---|---|
| 23.0 | 23.0 |
| 33.0 | 33.0 |
| 43.0 | 43.0 |
| 48.0 | 48.0 |
| 53.0 | 53.0 |
| 58.0 | 58.0 |
| 63.0 | 63.0 |
| 68.0 | 68.0 |
| 73.0 | 73.0 |
Related Conversion Questions
- How many lumens does 48 lux produce on a 2 square meter surface?
- If a room measures 10 m² with 48 lux lighting, what is the total lumens output?
- Can 48 lux be converted directly to lumens without knowing the area?
- What area corresponds to 48 lumens at 48 lux?
- How does changing the area affect lumens when lux is fixed at 48?
- Is 48 lux bright enough to equal 48 lumens in a 1 square meter room?
- How to calculate lumens from 48 lux for an irregular surface?
Conversion Definitions
Lux: Lux is a unit measuring illuminance, which means the amount of visible light that hits a surface per square meter. It quantifies brightness as perceived by the human eye, based on lumens spread over an area. One lux equals one lumen per square meter.
Lumens: Lumens measure the total quantity of visible light emitted by a source. Unlike lux, lumens don’t consider area, only the total light output. A higher lumen value means a brighter light source, regardless of how the light is distributed.
Conversion FAQs
Can you convert lux to lumens without knowing the area?
No, you cannot accurately convert lux to lumens without the surface area. Lux is lumens per square meter, so without the area, the total lumens can’t be determined because the measurement depends on how widely light is spread.
What happens to lumens if the area increases but lux stays the same?
If the area increases while lux remains constant, the total lumens increase proportionally. Since lumens = lux × area, larger areas illuminated at the same lux level means more total light output in lumens.
Is 48 lux considered bright for indoor lighting?
48 lux is relatively low for indoor lighting. Typical indoor environments such as offices require 300-500 lux or more. 48 lux might be enough for ambient or low-light settings but insufficient for tasks needing clear visibility.
How does the shape of the illuminated area affect the lux to lumens conversion?
The shape does not affect the mathematical conversion, only the total area matters. The formula multiplies lux by total surface area regardless of shape, but irregular shapes might make measuring the exact area harder, affecting accuracy.
Why does the conversion tool multiply lux by 1?
The tool assumes the surface area is 1 square meter by default, so multiplying by 1 keeps lux equal to lumens numerically. For other areas, the formula needs adjustment to multiply by the actual area in square meters.