1800 lux converted to lumens depends on the area over which the light is spread. Assuming a 1 square meter area, 1800 lux equals 1800 lumens.
Lux measures illuminance, or light per unit area, while lumens measure total light output. So to convert lux to lumens, multiply lux by the surface area in square meters.
Conversion Tool
Result in lumens:
Conversion Formula
To convert lux to lumens, the formula is:
Lumens = Lux × Area
Lux measures how much light hits a surface area, so when you multiply lux by the corresponding area (in square meters), you get the total luminous flux, which is lumens.
For example, if you have 1800 lux falling on 1 square meter:
- Lux = 1800
- Area = 1 m²
- Lumens = 1800 × 1 = 1800 lumens
If the area changes, the lumens will change proportionally.
Conversion Example
- Example 1: 1500 lux on 2 m²
- Multiply 1500 lux by 2 m²
- 1500 × 2 = 3000 lumens
- Result: 3000 lumens
- Example 2: 2000 lux on 0.5 m²
- 2000 × 0.5 = 1000 lumens
- The smaller the area, the fewer lumens for same lux
- Example 3: 1000 lux on 3 m²
- 1000 × 3 = 3000 lumens
- More area means more total light in lumens
- Example 4: 1750 lux on 1.2 m²
- 1750 × 1.2 = 2100 lumens
- Multiply lux by area to get lumens
Conversion Chart
| Lux | Area (m²) | Lumens |
|---|---|---|
| 1775.0 | 1 | 1775.0 |
| 1780.0 | 1 | 1780.0 |
| 1785.0 | 1 | 1785.0 |
| 1790.0 | 1 | 1790.0 |
| 1795.0 | 1 | 1795.0 |
| 1800.0 | 1 | 1800.0 |
| 1805.0 | 1 | 1805.0 |
| 1810.0 | 1 | 1810.0 |
| 1815.0 | 1 | 1815.0 |
| 1820.0 | 1 | 1820.0 |
| 1825.0 | 1 | 1825.0 |
This chart shows lux values ranging from 1775 to 1825, assuming a 1 square meter area. To find lumens, multiply the lux by the area. Use this chart to quickly estimate lumens for lux values near 1800.
Related Conversion Questions
- How many lumens are in 1800 lux over 2 square meters?
- What is the lumen output if 1800 lux covers a 0.75 m² surface?
- Does 1800 lux always equal 1800 lumens?
- How to convert 1800 lux to lumens for irregular surface areas?
- Can 1800 lux be converted to lumens without knowing the area?
- What is the difference between lux and lumens at 1800 lux level?
- How does changing area affect lumens when lux is 1800?
Conversion Definitions
Lux: Lux measures the amount of light that falls on a surface area. It quantify illumination intensity, defined as lumens per square meter. Lux considers how bright a surface looks based on light distribution, useful in lighting design and safety standards.
Lumens: Lumens measure total visible light output emitted by a source, regardless of direction. It quantifies the brightness perceived by human eyes, reflecting the amount of light energy emitted in all directions combined.
Conversion FAQs
Does the area always have to be 1 square meter to convert lux to lumens?
No, the area can be any size. Lux is luminous flux per square meter, so to get total lumens, multiply lux by the actual area. If area changes, lumens change proportionally. Assuming 1 square meter simplifies calculation but isn’t required.
Can I convert lumens back to lux?
Yes, but you need the surface area to do so. Lux = Lumens ÷ Area. Without the area value, converting lumens to lux is impossible because lux measures light per unit area.
Why does 1800 lux not always equal 1800 lumens?
Because lux depends on area illuminated. 1800 lux over 1 m² equals 1800 lumens, but over 2 m² equals 3600 lumens. Without area info, lux alone can’t determine lumens.
Is lux or lumens better for measuring room lighting?
They serve different purposes. Lux tells how bright a surface will be, which matters for visual comfort. Lumens tell how much light a bulb emits in total. Both needed for proper lighting design.
Can lux values be higher than lumens?
Lux and lumens measure different things, so they don’t compare directly. Lux is per unit area, lumens is total light. A small area with moderate lumens can have very high lux.