Nail Sizing Tool (Manual Beta)

⚠️ IMPORTANT DISCLAIMER

This sizing tool is in active development and provides estimates only. Fit is not guaranteed. Nail shape/curvature, camera angle, lighting, and application method affect results. Always size up if between sizes. Supported browsers: Safari or Chrome only. Other browsers may not register taps correctly.

📸 Photo requirements

JPG or PNG only (HEIC not supported)
Bright, even lighting (avoid glare and shadows)
Hand flat on a surface, camera directly above (no angle)
Quarter must be on the same flat plane as the nails
Upload two photos:
- Photo A: index + middle + ring + pinky (four fingers)
- Photo B: thumb only
Tip: If your photo appears rotated after upload, rotate it in your Photos app first, then re-save as JPG.

🧭 How to use

Upload Photo A (four fingers) and Photo B (thumb)
Select which photo you’re working on (Four Fingers / Thumb)
Click Manual Quarter Calibration
Tap the left edge and right edge of the quarter
Select the finger you’re measuring
Tap the nail’s left sidewall and right sidewall to measure width
Repeat until finished

Upload Photo A (4 fingers)

Upload Photo B (thumb)

Status: Upload Photo A and/or Photo B to begin.

Measured widths (mm)

Recommended sizes

Tip: If you’re between sizes, size up.