Face Shape Guide - Glasses and Sunglasses
Knowing how to choose sunglasses for face shape takes the guesswork out of buying glasses and sunglasses, whether you shop in a store or online. Many face shape guides rely on virtual try-on tools rather than explaining why a frame works. This face shape guide for glasses and sunglasses teaches a simple, measurable balance rule, then applies it to each face shape, so you can understand how to choose sunglasses for face shape and judge any frame with confidence.
Key Takeaways
- Match total frame width roughly to your face width at the temples.
- Choose a lens depth that covers the area from eyebrow to upper cheek.
- Use contrast: angular frames soften round faces; rounder frames soften angular ones.
- Fit comes first; face shape guidance refines the style.
- Always choose UV400 lenses for sunglasses.
The Balance Rule
The most reliable way to choose frames is to balance them with your face. Three measurements matter more than any label.
1. Frame width matches face width
The total frame width should be close to your face width at the temples. Frames that are too narrow make your face look wider and pinch; frames that are too wide slide down and look oversized.
2. Lens depth covers the eyebrow-to-cheek zone
The top of the frame should sit near your brow line, and the bottom should stay clear of your cheeks when you smile. This gives good sun coverage and a balanced look.
3. Contrast with your face's lines
Frames that contrast with your face shape tend to balance it: angular frames add definition to soft, round faces, while curved frames soften strong, angular features.
How to Find Your Face Shape
- Pull your hair back and look straight into a mirror.
- Note the widest part of your face: forehead, cheekbones or jaw.
- Compare face length with width.
- Look at your jawline: rounded, square or pointed.
Many people are a mix of two shapes. Use the closest match and let the balance rule do the rest.
How to Choose Sunglasses for Face Shape
| Face shape | Features | Frames that suit | Frames to avoid |
|---|---|---|---|
| Oval | Balanced proportions, slightly wider cheekbones | Most styles; keep frames in proportion | Oversized frames that swamp the face |
| Round | Soft curves, similar width and length | Angular, square or rectangular frames | Small round frames |
| Square | Strong jaw, broad forehead | Round, oval or softly curved frames | Sharp square frames |
| Heart | Wider forehead, narrower chin | Bottom-heavy or rimless frames, light colours | Top-heavy, decorated brow bars |
| Oblong | Longer than wide | Deep frames with strong temples | Small, shallow frames |
| Diamond | Wide cheekbones, narrow forehead and jaw | Oval or rimless frames, brow-line styles | Narrow frames |
| Triangle | Wider jaw, narrower forehead | Frames wider at the top, such as cat-eye or brow-line | Narrow, rimless bottoms |
Sunglasses for an oval face
Oval faces are balanced, so most frames work. Keep frames in proportion with your face width and experiment with bold shapes such as square or geometric styles.
Round face
Angular frames add definition. Rectangular, square and geometric styles work well, and aviators with straighter tops can too. Frames slightly wider than your face can make it look longer.
Square face
Round and oval frames soften a strong jaw. Thinner frames and rimless styles also balance bold features.
Heart face
Choose frames that add width lower down, such as rimless, light-coloured or bottom-heavy styles, to balance a wider forehead.
Oblong face
Deeper frames with strong temples break up length. Oversized and wraparound styles can also suit, as long as the width matches.
Diamond face
Oval, rimless and brow-line frames balance wide cheekbones. Avoid frames narrower than your cheekbones.
Triangle face
Frames with more width or detail at the top, such as cat-eye or brow-line styles, balance a wider jaw.
Frame Width for Your Face: Reading the Numbers
Most frames have three numbers printed inside the arm, such as 52-18-140.
| Number | What it means | How it affects fit |
|---|---|---|
| Lens width | The width of one lens, often 48 to 60 mm | Bigger number, wider frame |
| Bridge | The gap between lenses, often 14 to 22 mm | Affects fit on the nose |
| Temple length | The arm length, often 135 to 150 mm | Affects grip behind the ears |
Measure your current glasses
If you own glasses or sunglasses that fit well, check the numbers inside the arm and use them as a reference when buying. You can also measure the total frame width across the front with a ruler. Write the numbers down before shopping, so you can compare frames quickly and avoid ordering a size that doesn't fit.
Popular Frame Styles Explained
Aviator
Teardrop-shaped lenses with a thin metal frame and double bridge. Aviators suit oval, heart and square faces; versions with straighter tops work well for round faces.
Rectangular and square
Strong, angular lines that add definition. Ideal for a round or oval face shape, less so for a square face.
Round
Circular lenses that soften angular features. Best for square, oblong and diamond faces.
Cat-eye
Upswept outer corners that draw attention upwards. Great for triangle, round and oval faces.
Geometric and polygonal
Hexagonal or multi-sided lenses that combine angles and curves, adding interest to oval, round and heart faces.
Wraparound and sports
Curved frames that follow the face, giving side protection for running, cycling and golf. Choose a width that matches your face to avoid pressure points.
Rimless and semi-rimless
Light, minimal frames that suit heart and diamond faces and anyone wanting a subtle look.
Oversized
Large lenses offering extra coverage. They suit oblong and oval faces but can overwhelm small, narrow faces.
Trying Sunglasses On: In Store and Online
In store, look straight into a mirror and check the balance rule: width, depth and where the frame sits on your nose. Smile to check the frames don't lift off your cheeks, and tilt your head down to check they stay in place. Online, compare the frame measurements with a pair you already own, and use the lens width, bridge and temple numbers rather than photos alone. Check the return policy in case the fit isn't right.
Mixed Face Shapes
Many people don't fit a single face shape. An oval face with a strong jaw, for example, can borrow guidance from both oval and square shapes. If you're unsure, focus on your most noticeable feature, such as wide cheekbones or a strong jawline, and choose frames that balance it. The balance rule still applies whatever your face shape.
Glasses vs Sunglasses
The same balance rule works for prescription glasses and sunglasses. Sunglasses can be slightly larger for more sun coverage, while everyday glasses often look best with the eyes centred in the lenses. For prescription lenses, an optician will also check the distance between your pupils.
Options for Prescription Wearers
If you wear prescription glasses, you have three main options: prescription sunglasses made by an optician, clip-on or magnetic sun lenses that attach to your glasses, or fit-over sunglasses designed to sit over your frames. The balance rule still applies, so choose a frame that suits your face shape, and ask your optician to check the fit and lens height.
Choosing Sunglasses for Children
Children's eyes are particularly sensitive to UV light, so choose sunglasses labelled UV400 or 100% UV protection. Flexible, impact-resistant frames and a snug fit help them stay on during play. Look for adjustable straps for toddlers. Face shape matters less than comfort for children, since their features change as they grow.
Beyond Face Shape
Skin tone and colour
Warm skin tones often suit tortoiseshell, gold and brown frames; cool tones often suit black, silver and grey. Treat this as a guide, not a rule.
Lifestyle
Sports and outdoor use call for wraparound or larger frames with secure grip. For driving, choose comfortable frames that don't block side vision.
Protection
Whatever the shape, choose sunglasses labelled UV400 or 100% UV protection. See our guide on what UV400 means.
Which Sunglasses Suit My Face? A Quick Test
- Width roughly matches your face at the temples.
- Top of the frame sits near your brow line.
- Frames don't rest on your cheeks when you smile.
- Your eyes sit roughly in the centre of the lenses.
- The frame shape contrasts with your face shape.
- They feel comfortable, without pinching or sliding.
Common Mistakes
- Choosing by face shape alone and ignoring width.
- Buying frames that rest on the cheeks.
- Picking tiny frames that offer little sun protection.
- Forgetting to check UV protection.
Use the balance rule and you'll know how to choose sunglasses for face shape with confidence, online or in store.
Sunglasses From Global Swanky
Browse more in our Sports and Outdoors collection.
1. UV400 Fashion Oval Frameless Sunglasses
The UV400 Fashion Oval Frameless Sunglasses for Eye Protection are $10.19, a soft oval shape that suits square and diamond faces.
2. Square Polarized Sunglasses
The Square Polarized Sunglasses for Outdoor and Daily Wear are $17.16, an angular style that adds definition to round faces.
3. UV Protection Large Frame Sports Sunglasses
The UV Protection Large Frame Sports Sunglasses for Active Use are $12.34, a larger frame suited to oblong faces and outdoor activity.
4. Gradient Lens Rimless Sunglasses
The Gradient Lens Rimless Sunglasses with Square Metal Frame Design are $198.54, a light rimless style that suits heart and diamond faces.
5. Sunglasses Case EVA Hard Shell
The Sunglasses Case EVA Hard Shell Protective Zipper Pouch is $21.05, to keep frames in shape.
Frequently Asked Questions
What are the best sunglasses for an oval face?
Oval faces suit most styles, so focus on proportion: choose frames about as wide as the widest part of your face, and avoid oversized frames that swamp your features.
How do women choose sunglasses for their face shape?
The same balance rule applies to everyone: match frame width to face width, cover the area from eyebrow to upper cheek, and choose frame lines that contrast with your face's shape. Style and colour are then personal choice.
Which sunglasses suit my face?
Start with fit rather than shape: frames about as wide as your face, with the top near your brow line and the bottom clear of your cheeks. Then use contrast, such as angular frames for round faces and rounder frames for square ones.
What frame width should I choose for my face?
Choose a total frame width close to your face width at the temples. A frame that's too narrow makes the face look wider; one that's too wide can slide and look oversized. The lens width and bridge numbers inside the arm help you compare.
Do aviators suit a round face?
Aviators can suit round faces, especially styles with straighter tops and slightly angular lenses, which add definition. Very rounded teardrop shapes can emphasise roundness, so try both.