Find Your Perfect Fit
Our innovative sizing tool uses a US quarter as a reference to accurately measure your nails. Upload a photo of each finger next to a quarter, and we'll calculate your exact size.
Precise Measurement
Using a quarter for scale ensures accuracy within 0.5mm
100% Private
Your photos are processed securely and never shared
Save & Reuse
Store your profile for one-click ordering on future purchases
How It Works
Gather Your Materials
US Quarter
Standard 24.26mm diameter
Phone Camera
Any smartphone works
Good Lighting
Natural light is best
Position Your Finger & Quarter
Correct Position:
- Place finger flat on a surface, nail facing up
- Position quarter right next to your knuckle
- Keep quarter and nail in the same plane (flat)
- Make sure both are clearly visible
Upload Photos of Each Finger
Take a photo of each finger individually, with the quarter positioned next to it. Upload all 5 fingers for a complete sizing profile:
Pro Tip: Upload photos for both hands if you want different sizes for left and right hands. Most people have slight differences between their dominant and non-dominant hand.
Fine-Tune & Save Your Profile
AI Detection
Our AI automatically detects the quarter and nail edges in your photo
Manual Adjustment
Use the 12 adjustment handles to fine-tune the nail outline for perfect accuracy
Once all fingers are measured, save your profile to your account for easy reordering!
Start Measuring Your Nails
👍Photo of Your ThumbPosition your thumb flat with nail facing up. The thumb is usually the widest nail.
Position your thumb flat with nail facing up. The thumb is usually the widest nail.
Photo Tips:
- Place your thumb flat with nail facing the camera
- Place a US quarter next to your finger at the same distance
- Hold camera directly above - not at an angle
- Use bright, even lighting
No quarter? Print our reference card:
PNG, JPG, HEIC up to 20MB
or drag and drop
Common Questions
Why do I need a quarter?↓
A US quarter has a standardized diameter of 24.26mm, making it the perfect reference point for accurate measurements. By including it in your photo, we can calculate the exact size of your nails regardless of how far your camera was from your hand.
Do I need to upload all 5 fingers?↓
Yes! Each finger has a unique width and shape. By measuring all 5, we ensure every nail in your set fits perfectly. The thumb especially varies in size from person to person.
What if my nails don't fit perfectly?↓
We include a gentle file with every set so you can make minor adjustments. If a nail is significantly off, contact us within 14 days and we'll send replacement nails in the correct size at no charge.
Can I use a different coin?↓
Currently, our tool is calibrated for US quarters only. Other coins have different sizes and would result in inaccurate measurements. If you don't have a quarter, you can ask a friend or get one from any store.