Introduction
If you’re shopping for miniature reflector bulbs for track lighting, landscape lighting, or accent lighting, you’ve likely come across MR11 and MR16 bulbs. At a glance, these two may seem similar, but choosing the wrong one can impact your lighting’s performance and fit. In this post, we’ll compare an MR11 to an MR16, breaking down their differences in size, beam angle, wattage, and ideal applications so you can make the right choice for your lighting needs.
What Are MR Bulbs?
“MR” stands for Multifaceted Reflector, which refers to the mirrored surface inside the bulb that controls how light is directed. These bulbs are popular for delivering focused, bright light in compact fixtures.
Size Comparison: MR11 vs. MR16
The primary difference when you compare an MR11 to an MR16 is size:
- MR11 bulbs are 11 eighths of an inch in diameter (about 1.375 inches).
- MR16 bulbs are 16 eighths of an inch in diameter (about 2 inches).
This seemingly small difference can affect what fixtures they’ll fit in. MR11s are better for small or tight spaces, while MR16s provide more light for broader coverage.
Beam Angles and Light Output
Another critical factor when you compare an MR11 to an MR16 is the beam angle:
- MR11 bulbs typically offer narrower beam angles, making them excellent for spotlighting artwork, statues, or specific areas in retail or museum displays.
- MR16 bulbs offer a broader range of beam angles, from narrow spots (10°–15°) to wide floods (40°–60°), making them more versatile for general lighting or accenting wider areas.
In general, MR16s provide higher light output, making them suitable for larger or more demanding lighting tasks.
Voltage and Base Options
Both MR11 and MR16 bulbs are commonly available in 12V, using GU4 (for MR11) or GU5.3 (for MR16) pin bases. Be sure to check your fixture’s compatibility before choosing.
While both are also available in LED and halogen versions, LED MR16s tend to offer better brightness options and color rendering when compared to MR11s.
Best Use Cases
Let’s compare an MR11 to an MR16 based on practical use:
| Feature | MR11 | MR16 |
| Size | Smaller (1.375″) | Larger (2″) |
| Beam Angle | Narrower (spotlight) | Wider range (spot to flood) |
| Light Output | Lower brightness | Higher brightness |
| Applications | Display cases, tight fixtures | Track lighting, landscape, retail |
| Fixture Fit | Compact spaces | Standard-size fixtures |
If you need precise, narrow lighting in a small fixture, go with the MR11. If you want more versatility and stronger illumination, the MR16 is the better choice.
Energy Efficiency and Longevity
Both MR11 and MR16 bulbs are available in energy-efficient LED models, offering long lifespans of 15,000–25,000 hours. However, MR16 LEDs generally outperform MR11s in terms of brightness and dimming capability.
Final Thoughts
When you compare an MR11 to an MR16, your choice ultimately depends on the fixture size, desired beam angle, and lighting needs. MR11s are compact and great for focused, small-space lighting. MR16s offer more power, wider beam options, and are better suited for general-purpose and accent lighting in larger areas.
Before purchasing, always check your fixture size, voltage requirements, and application needs to ensure a perfect fit and optimal performance.
