An LED spotlight's beam angle helps you choose how much to concentrate or spread the light. To get it right, relate three things: the size of the area, the distance from the spotlight and the beam direction. The same angle produces a different footprint when you move the fitting closer, raise it or tilt it.
Before buying, decide whether you want to highlight an object, illuminate a table or provide general lighting. Then compare the stated angle alongside the light distribution. A figure in degrees is a starting point, but it does not fully describe the result in your room.
It is expressed in degrees. According to the ERCO technical definition, it is the angle between the directions where intensity falls to 50% of the value on the main axis. Its boundary therefore does not represent a sharp cut-off beyond which all light disappears.
With an approximately circular beam, a narrow angle concentrates the main area on a smaller surface; a wide angle spreads it over a larger one at the same distance. Some optics produce oval or asymmetric distributions. In those cases, consult the product diagram rather than imagining a circular cone.
Two fittings with the same lumens can distribute light differently. To compare the result on a surface, look for photometric information: intensity distribution and, where available, illuminance values at specified distances. Wattage and a photograph of a lit fitting are not enough to choose the beam.
The beam diameter depends on the angle and distance. Measure to the surface you want to illuminate. If the ceiling is at 2.70 m and the table at 0.75 m, the vertical distance between the two planes is 1.95 m, provided the spotlight is at ceiling level.
For a circular beam striking the surface perpendicularly, a geometric approximation is: diameter = 2 × distance × tangent of half the angle. Use the same unit for distance and diameter. This estimate helps compare sizes; it does not calculate lux or guarantee uniformity inside the circle.
| Beam angle | At 1 m | At 2 m | At 3 m |
|---|---|---|---|
| 24° | 0.43 m | 0.85 m | 1.28 m |
| 36° | 0.65 m | 1.30 m | 1.95 m |
| 60° | 1.15 m | 2.31 m | 3.46 m |
These are rounded, indicative calculations for comparing beam angles. They do not represent measurements of specific catalogue spotlights or the diameter of a completely uniform area.
The 20091 recessed spotlight specifies 12 W, 900 lm, 6000 K and a 36° beam angle, with a pull-out, adjustable head. Its LED is integrated and it is not dimmable. The head allows the light to be directed; an adjustable beam angle is not advertised.
For comparison, imagine a 1.20 m-long table with the spotlight aimed perpendicularly from 2 m above it. The geometric estimate for 36° gives a diameter of 1.30 m. This is an indicative calculation, not a measured footprint for this product. At that distance, 24° would give 0.85 m and 60° would give 2.31 m.
This comparison still does not establish that one spotlight will illuminate the entire table well. Its width, light levels and the shadows cast by people sitting there remain unknown. For working, it is worth checking distribution across the whole usable area. For a decorative accent, you may want to limit the main area.
Aiming it towards a wall or an object to one side changes the distance and footprint shape: the footprint may become elongated and extend beyond the target. For a picture, note its size and position, the installation point and the product's available adjustment range.
Also check where people usually sit or stand. The visual quality of a downlight depends on shielding and reflections as well as distribution. A narrow or wide beam alone does not guarantee freedom from glare.
The 20 W square downlights in the LedsCome catalogue, both recessed and surface-mounted, specify a 120° beam angle. This is a wide angle to consider for general lighting. This shared specification does not establish that both distribute light in exactly the same way or provide identical visual comfort.
Check each LED downlight product page and also decide on the mounting type with our comparison of recessed and surface-mounted models. Choosing the mounting arrangement and choosing the beam answer different questions.
A selection from the catalogue relevant to this decision. Check the product information and variant before buying; photographs do not replace a drawing or confirm compatibility.
An example with a stated 36° beam and an adjustable head for accent lighting. A pull-out head does not mean a replaceable LED. Check the cut-out, depth and direction; dimming is not supported.
View product details and options
An option for comparing a recessed solution: check the actual cut-out, depth and fixings before ordering. The image shows a pack presentation; choose and confirm the number of units in the variant.
View product details and optionsNo. The footprint grows with distance and changes when it strikes the surface at an angle.
Only if it includes that function. Turning the head changes direction; varying the beam angle requires optics designed for that purpose.
That is not enough. Height above the plane, photometry, shadows and the uniformity you want to achieve all matter.
It describes a wider distribution, not necessarily more lumens. Compare both figures and the illumination on the surface.
No. Optics, shielding, fitting position and possible reflections from surfaces also count.
Consider maintenance when choosing between integrated LEDs and replaceable bulbs and, if you are installing a panel, find out how to choose its surface-mount kit. Continue comparing solutions in the lighting guide index.
