Measure, diagnose, plan, and remember your fit.
The tools do different jobs on purpose. Start with measurements when sizing is unclear, compare only against source-dated chart snapshots, verify the brand-specific rule when two sizes are close, use symptom diagnosis when a set is failing, and save a fit profile for repeatable second wears.
Nail Width Profile
Record all ten nail widths in millimeters and compare them with the seller’s own chart.
Open tool →Compare oneCross-Brand Width Comparator
Enter one nail width and rank the nearest recorded widths from verified product/shape or product-family snapshots—without converting brand size labels.
Open tool →Compare all 1010-Finger Width Profile Matcher
Enter all ten widths, respect source-captured per-size inventory, and shortlist stored molds without calling numeric coverage a fit guarantee.
Open tool →VerifyBrand Sizing Rule Checker
See the current official between-size rule for seven brand systems—and flag contradictions instead of inventing one universal answer.
Open tool →Inspect geometryFit Geometry Explorer
Start with one nail-bed width, then inspect published length and inner-curve fields only where the same official chart supplies all three.
Open tool →DiagnoseFit Troubleshooter
Choose the symptom—side lift, center lift, rocking, pinching, pop-off—and jump to the matching check.
Open tool →PlanWear Strategy Planner
Balance event length, removal priority, water-heavy plans, and reuse without promising universal wear days.
Open tool →RememberNail Fit Profile
Save widths, curve notes, finger-specific overrides, and reusable-set notes locally in your browser.
Open tool →Start with the symptom map.
It routes fit, lifting, adhesive, daily-life, and reuse problems without making you browse all 69 guides.