Mila's Ring Sizer & Converter

About this app

From the developer of Mila's Tools (Apple Staff Pick, 1,200+ reviews at 4.8). Find your perfect ring size in seconds. Seven international sizing systems on one screen — no charts to memorize, no guesswork. Mila's Ring Sizer & Converter is the standalone version of the ring sizing tool from Mila's Tools, the 29-category unit converter on the App Store since 2011. Type any size and every other standard updates in real time: * Inner Diameter (mm) * Inner Circumference (mm) * US Ring Sizes * EU (Continental) Ring Sizes * UK Ring Sizes (A–Z, with half sizes) * Swiss Ring Sizes * Japanese Ring Sizes * Chinese (Mainland) Ring Sizes * Hong Kong Ring Sizes Don't know your size? Measure directly from your phone: * Match a Ring on Screen — lay a ring on the display and tap the circle that fits. US sizes 3 through 15 in half-size steps. * Measure with String — wrap a strip of paper around your finger, then read the length on a calibrated on-screen ruler accurate to 0.5 mm. A one-time screen calibration with a common coin ensures physical accuracy. 13 reference coins from major currencies are included — the app picks the right one for your region. Whether you're shopping for an engagement ring, ordering a wedding band online, sizing a surprise gift, or comparing international jewelry — type one value and every other standard appears instantly, or measure first and let the app do the rest. Sizes are displayed in each system's standard increments — half sizes for US, whole numbers for EU and Asian systems — so you always see the nearest real size, not a raw decimal. Features: * Measure your ring size directly on your phone * Real-time conversion as you type * Favorite units for quick access * Show or hide units you don't need * Clean, ad-light interface * Available in 13 languages * Works fully offline — your data never leaves your device From the developer of Mila's Tools — Apple Staff Pick, 4.8 from 1,200+ reviews on the App Store. Download Mila's Ring Sizer & Converter and find your size in seconds. - - - - - Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

* New Release Notes link in Settings → About, making it easy to see what's changed in each update * Smoother experience with the rating prompt now appearing at more thoughtful moments so it never interrupts what you're doing

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

1. First observed Aug 20, 2026 · 4:21 AM Free