We've already discussed how to choose the right sunglasses for your face in a previous blog post. In this article, we'll show you exactly how to determine your face shape so you can confidently rock the perfect pair of glasses or sunglasses.
When it comes to buying eyewear - whether it's sunglasses or prescription frames - it's not just about chasing trends or buying whatever everyone else is wearing. The right frames should work with your natural features, balance your proportions, and feel like they were made for your face.
A great pair of sunglasses can sharpen your style, highlight your eyes and cheekbones, and completely change the way you feel when you put them on. In this guide, we'll break down the five most common face shapes - oval, round, square, heart-shaped, and diamond-shaped - along with simple ways to figure out which category you fall into.
Why Face Shape Matters for Eyewear
Your face shape plays a big role in how different glasses and sunglasses look and fit. Some frames naturally soften stronger facial features, while others add structure and definition to rounder faces. The goal isn't to hide your features - it's to complement them.
Choosing frames that suit your face shape can help:
Balance your features: Angular frames can add structure to softer faces, while rounded frames can soften sharper jawlines and strong cheekbones.
Improve overall fit: The right frame width and lens size tend to sit more comfortably and look more natural on your face.
Elevate your style: A well-fitting pair of sunglasses doesn't just complete an outfit - it becomes part of your look.
That said, these aren't hard rules. Personal style always matters more. Some people love oversized frames. Others prefer minimalist wire frames, sporty wraparound sunglasses, or bold vintage-inspired styles. Knowing your face shape simply gives you a better starting point when you're trying to narrow things down.
How to Find Your Face Shape
Figuring out your face shape is easier than most people think. The main things you'll want to compare are your forehead width, cheekbones, jawline, and overall face length.
Here are two easy ways to determine your face shape at home.
Method 1: Use a Tape Measure
Forehead width: Measure across the widest part of your forehead, usually halfway between your eyebrows and hairline.
Cheekbone width: Measure from the outer corner of one eye across the highest point of your cheekbones to the outer corner of the opposite eye.
Jawline width: Measure from the tip of your chin to below your ear where the jaw angles upward, then multiply that number by two.
Face length: Measure from the center of your hairline straight down to the bottom of your chin.
Once you have your measurements, compare them to each other.
If your face is longer than it is wide, you likely have an oval face shape. If your cheekbones are the widest part of your face with a narrower forehead and jawline, you may have a diamond-shaped face. Strong jawlines with similar forehead and cheekbone widths often fall into the square category, while softer curves usually point toward a round face shape.
Method 2: The Mirror Test
If measuring sounds like too much work, there's an easier option.
Pull your hair back so your full face is visible.
Stand in front of a mirror in a well-lit room.
Use a dry-erase marker, lipstick, or washable pencil to trace the outline of your face directly onto the mirror.
Step back and look at the shape. Does it appear more rounded, angular, long, or tapered?
This quick trick gives you a surprisingly accurate visual of your overall face shape and makes it much easier to spot the differences between oval, round, square, heart-shaped, and diamond-shaped faces.
Choosing the Best Sunglasses for Your Face Shape
Once you've identified your face shape, shopping for sunglasses becomes a lot less overwhelming. Instead of endlessly scrolling through styles, you can focus on frames that naturally work with your proportions and personal style. And honestly, this is where trying different looks becomes part of the fun.
Some people end up loving a frame style they never expected to wear. Others realize they like having different sunglasses for different moods, outfits, or situations - something classic for everyday wear, something louder for weekends or travel, and another pair somewhere in between.
Round faces: Angular and rectangular frames tend to add definition and structure.
Square faces: Rounded frames and softer curves help balance sharper jawlines and facial angles.
Oval faces: Most frame styles work well, making oval face shapes one of the most versatile for eyewear.
Heart-shaped faces: Frames with softer edges and balanced proportions tend to work especially well.
Diamond-shaped faces: Oval frames, rimless styles, and curved silhouettes often complement prominent cheekbones best.
Frame size matters too. Oversized sunglasses can look incredible when the proportions are right, but frames that are too large or too narrow can throw off your overall look and feel uncomfortable during everyday wear.
If you're looking for a more universally flattering style, aviator sunglasses have stayed popular for decades for a reason. They work across a wide range of face shapes and strike a balance between classic and modern without trying too hard.
And honestly, confidence matters more than any guide. Some of the best sunglasses choices happen when somebody throws the "rules" out completely and wears a pair simply because they love how they look in them.
What You Should Leave With
Understanding how to determine your face shape is one of the easiest ways to narrow down sunglasses and glasses that genuinely suit you. With a few quick measurements - or even just the mirror test - you can get a much better idea of which frame shapes, widths, and styles tend to complement your features best.
More importantly, you'll spend less time buying frames that almost work and more time wearing pairs you actually feel confident in.
Whether your style leans classic, modern, sporty, oversized, or somewhere in between, the right eyewear should feel like an extension of your personality. And because sunglasses are one of the easiest ways to change up your look, a lot of people end up wanting more than one pair once they figure out what works for them.
That's part of why Neven's Buy 1 Get 2 Free deal resonates with so many people. It gives you the freedom to experiment with different frame shapes, lens colors, and styles without feeling locked into just one look.
