International Sizing Charts

To measure your wrist size accurately, wrap a flexible measuring tape directly below your wrist bone (ulnar styloid process, towards your hand) where a watch or bracelet sits naturally. Ensure the tape is flush against your skin without pinching or pulling tight, and read the number where the zero mark overlaps. If you don't have a tailor's tape, wrap a strip of paper around your wrist, mark the overlap with a pen, and measure it against a flat ruler.

To measure wrist size for a watch, wrap a flexible measuring tape around your wrist exactly where you prefer to wear your timepiece—typically about half an inch above or directly behind the wrist bone. Keep your arm relaxed on a table to capture natural wrist expansion. Compare your wrist circumference to the watch case diameter and lug-to-lug distance to ensure the watch case covers 60% to 75% of your flat wrist surface without the lugs overhanging.

Wrist joint size is primarily determined by bone structure (radius and ulna bones) and connective tendons, which cannot be enlarged through exercise alone because the wrist joint contains virtually no muscle tissue. However, you can significantly increase the muscular fullness of your lower forearms immediately above the wrist by performing forearm hypertrophy exercises such as heavy barbell wrist curls, reverse wrist curls, farmer's walks, and grip trainers.

Measure your raw skin-tight wrist circumference with a flexible tape, then add a fit allowance based on your desired bracelet drape: add 0.5 cm (0.25 in) for a snug fit (ideal for delicate chains and tennis bracelets), 1.5 cm to 2.0 cm (0.75 in) for a standard comfort fit (ideal for link and Cuban chains), or 2.5 cm to 3.0 cm (1.0 to 1.25 in) for a loose fit (necessary for heavy charm bracelets like Pandora).

The average wrist circumference for an adult woman is 6.0 to 6.5 inches (15.2 to 16.5 cm). Sizing categories for women generally rank as: Small / Petite (under 6.0 inches / 15 cm), Medium / Standard (6.0 to 6.5 inches / 15.2 to 16.5 cm), and Large / Plus (7.0 inches / 17.8 cm and above).

The average wrist circumference for an adult man is 7.0 to 7.25 inches (17.8 to 18.4 cm). Men's wrist sizes typically fall into: Small (under 6.5 inches / 16.5 cm), Medium / Average (6.5 to 7.25 inches / 16.5 to 18.4 cm), and Large (7.5 to 8.0 inches / 19.0 to 20.3 cm and above).

Yes, wrist size is predominantly genetic. Because the wrist joint contains minimal adipose (fat) tissue and no muscle bellies, wrist circumference directly reflects your skeletal frame thickness and bone density (somatotype: ectomorph, mesomorph, or endomorph), which is inherited from your biological parents.

To measure your wrist without a tape measure, use everyday household items: (1) Wrap a strip of paper, ribbon, or dental floss around your wrist, mark where it overlaps with a pen, and measure the distance against a standard desk ruler. (2) Use a standard credit card (exactly 85.60 mm or 3.37 inches long) or a US banknote (6.14 inches / 156 mm) as a known measurement reference. (3) Hold a string around your wrist and match it directly against our on-screen calibrated digital ruler.

Wrap a piece of paper, charging cable, or shoelace around your wrist where your watch rests. Mark the exact spot where the end meets the loop with a fine-tip pen, lay the paper flat, and measure the marked length against a ruler or standard credit card (3.37 in / 85.6 mm). Use that circumference to calculate your ideal watch case diameter and strap length.

You can estimate bone frame size with the classic thumb-and-finger wrist wrap test: Wrap the thumb and middle finger of your dominant hand around the narrowest part of your opposite wrist. If your thumb and finger overlap easily, you have a small/slender bone frame (<6.25 in / <16 cm). If they just barely touch tip-to-tip, you have a medium/average frame (6.25–7.25 in / 16–18.5 cm). If there is a gap and they cannot touch, you have a large/heavy bone frame (>7.25 in / >18.5 cm).

Measure around your wrist with a flexible tape where your Apple Watch sits. For Apple Solo Loops (sizes 1–12): sizes 1–3 fit 130–145 mm wrists, sizes 4–6 fit 150–165 mm wrists, sizes 7–9 fit 170–185 mm wrists, and sizes 10–12 fit 190–205 mm wrists. For two-piece Apple Watch Sport Bands: S/M fits 130–180 mm (5.1–7.1 in) wrists and M/L fits 150–200 mm (5.9–7.9 in) wrists.

You can measure your wrist with an iPhone in two easy ways: (1) Use Safari to open our online screen calibrator, calibrate the scale using any standard credit card (85.6 mm), and hold a piece of string from your wrist directly against the live on-screen millimeter ruler. (2) Open Apple's built-in iOS "Measure" app, place your wrist flat on a high-contrast desk, and tap two points across your wrist width to gauge your wrist dimensions.

Measure your wrist directly below the ulnar styloid bone (the rounded wrist bone on your pinky finger side), between the bone and your hand. This is the natural resting position for watches, cuffs, and chain bracelets, ensuring your jewelry won't bind or pinch during daily wrist flexion.

To measure bracelet size, find your bare wrist circumference using a flexible measuring tape just below your wrist bone, then add your preferred fit ease: add 0.5 cm (0.25 in) for a snug fit, 1.5 to 2.0 cm (0.75 in) for a standard comfort fit, or 2.5 to 3.0 cm (1.0 to 1.25 in) for a loose or charm bracelet fit. The resulting total is your ideal bracelet size.

Wrap a metric measuring tape snugly around your wrist and record the value in centimeters (e.g. 16.5 cm). For a standard chain bracelet, add 1.5 cm of comfort ease to get your bracelet size (e.g. 16.5 cm + 1.5 cm = 18.0 cm bracelet size).

At home, wrap a non-stretchy strip of paper or string around your wrist. Mark the overlap point with a pen, lay the paper flat, and measure the distance from zero to your mark with a household ruler. Add 0.5 to 0.75 inches (1.5 to 2 cm) to determine your finished bracelet length.

Wrap a paper strip, ribbon, or string around your wrist and mark the overlap. Then compare the length against standard household items: an ISO credit card is 8.56 cm (3.37 in) long, a US dollar bill is 15.6 cm (6.14 in) long, or place the string directly against our calibrated on-screen digital ruler.

Measure your raw wrist circumference in millimeters (e.g. 170 mm). Add 5 mm for a snug fit (175 mm), 15–20 mm for a classic link bracelet comfort fit (185–190 mm), or 25–30 mm for a chunky charm bracelet fit (195–200 mm).

Wrap a flexible inch tape around your wrist bone (e.g. 6.5 inches). Add 1/4 inch for a snug fit (6.75 in), 1/2 to 3/4 inch for a standard comfort fit (7.0 to 7.25 in), or 1 inch for a loose or charm fit (7.5 in).

Measure the man's wrist circumference (standard men's wrists range between 7.0 and 7.5 inches / 18 to 19 cm). Add 0.5 to 0.75 inches (1.5 to 2 cm) for link, curb, or beaded bracelets. Most men wear an 8.0-inch (20.5 cm) bracelet for medium wrists or 8.5-inch (21.5 cm) for larger wrists.

Wrap a paper strip around your wrist, mark the overlap with a pen, and lay the strip straight along a rigid desk ruler to read your bare wrist circumference. Add 1.5 cm (0.6 in) for bracelet ease. If measuring an existing well-fitting bracelet, lay it flat and measure from the clasp tip to the catch hook.

To size a metal watch bracelet, subtract the watch's vertical Lug-to-Lug distance from your total wrist circumference. For example, on a 175 mm wrist with a 45 mm lug-to-lug watch case, the two metal bracelet sections combined must equal 130 mm (including clasp). Links can be added or removed with a link pin pusher tool.

Tennis bracelets look best with a snug to gentle comfort fit so diamond links remain upright and do not flip or snag. Measure your bare wrist circumference and add only 0.5 inches (1.25 cm). You should be able to slide exactly one finger comfortably between the tennis bracelet and your skin.

The standard, most common women's bracelet size is 7 inches (18 cm), fitting a standard 6.0 to 6.5 inch wrist. Petite/small bracelets measure 6.5 inches (16.5 cm), while medium/large bracelets measure 7.5 to 8.0 inches (19 to 20.3 cm).

To size a bracelet correctly, calculate your bare wrist circumference and apply the recommended style allowance: (1) Snug Fit (+0.5 cm / 0.25 in) for delicate chains and cuffs; (2) Comfort Fit (+1.5 to 2.0 cm / 0.75 in) for Figaro, Cuban, and rope chains; (3) Loose / Charm Fit (+2.5 to 3.0 cm / 1.0–1.25 in) for beaded and Pandora charm bracelets.

To make a DIY bracelet sizer, cut a 1-inch (2.5 cm) wide strip of heavy cardstock approximately 10 inches (25 cm) long. Draw millimeter and inch tick marks starting from zero using a ruler. Cut a vertical slit at the zero mark, insert the pointed ruler tail through the slit, slide it over your wrist, and read your exact circumference and bracelet size.

Because rigid closed bangles do not open with a clasp, you must measure your hand circumference rather than your wrist. Bring your thumb and little finger together across your palm (as if sliding on a bangle), wrap a measuring tape snugly around the widest part of your hand knuckles, and divide that hand circumference by Pi (3.14159) to find the required inner diameter.

Indian bangle sizing represents inner diameter expressed in inches and sixteenths of an inch (Format: Inches-Sixteenths). For example, size 2-4 means 2 and 4/16 inches (2.25 in / 57.2 mm inner diameter), size 2-6 means 2 and 6/16 inches (2.375 in / 60.3 mm), and size 2-8 means 2 and 8/16 inches (2.5 in / 63.5 mm).

Measure the inside diameter across the widest circular opening of a well-fitting bangle using an inch ruler (e.g. 2.25" for size 2-4, 2.375" for size 2-6, 2.5" for size 2-8). If measuring your hand, measure knuckle circumference in inches and divide by 3.14 to find your inner diameter in inches.

At home, pinch your thumb and pinky finger together tightly. Wrap a piece of string or ribbon around the widest point across your knuckle base and thumb joint. Mark the string where it overlaps, measure its length in millimeters with a ruler, and use our online bangle chart to find your matching Indian size.

Measure across the center inside opening of an existing bangle in centimeters (e.g. 5.7 cm = size 2-4, 6.0 cm = size 2-6, 6.4 cm = size 2-8). If measuring your hand, wrap a tape around your folded knuckles in cm (e.g. 19.0 cm) and divide by 3.14 to get a ~6.05 cm inner diameter.

Place an existing well-fitting bangle flat on a sheet of paper. Lay a ruler across the center of the circle and measure the straight-line distance from inner edge to inner edge in millimeters (do not include the metal thickness of the bangle wall).

Use our calibrated on-screen bangle sizer tool: calibrate your phone or computer screen with any standard credit card (85.6 mm), place your physical bangle flat against the glowing circle on your screen, and adjust the slider until the virtual circle matches the inside rim of your bangle.

Tuck the child's thumb into their palm and measure the circumference around their folded hand knuckles. Toddlers (1–3 years) typically wear Indian size 1-14 to 2-0 (47–50 mm inner diameter), while children (4–8 years) wear size 2-0 to 2-2 (50–54 mm). For toddlers, open cuffs or adjustable hinged bangles are recommended.

Bangle sizes in millimeters refer to inside diameter: Size 2-2 = 54.0 mm; Size 2-4 = 57.2 mm; Size 2-6 = 60.3 mm; Size 2-8 = 63.5 mm; Size 2-10 = 66.7 mm; Size 2-12 = 69.9 mm.

To measure without an existing bangle, pinch your thumb and pinky finger together as if sliding a bangle on. Wrap a paper strip or string around the widest part of your folded knuckles, mark the overlap, measure the length in mm, and divide by 3.14 to get your required inner diameter.

Wrist circumference cannot be used for closed solid bangles because the bangle must be large enough to slide over the wider hand knuckles. However, for open cuff bangles or hinged bangles with clasps, you should measure wrist circumference and add 1.5 cm (0.6 in) for comfortable movement.

Wrap a paper strip around your compressed hand knuckles, mark the overlap with a pen, and compare the marked paper against a standard credit card (85.6 mm / 3.37 in), a banknote (156 mm / 6.14 in), or our calibrated on-screen ruler.

Bring your thumb and little finger together tightly in a tapered cone shape. Wrap a flexible measuring tape around the widest circumference across the base of your four knuckles and thumb base joint. Common measurements: 17–18 cm knuckle circumference = size 2-2 / 2-4; 19 cm = size 2-6; 20–21 cm = size 2-8; 22 cm = size 2-10.

Determine whether the bangle is rigid closed (slip-on) or hinged (with clasp). For closed slip-on bangles, measure your folded hand knuckle circumference. For hinged or cuff bangles that open up, measure your bare wrist circumference and add 1.5 cm (0.6 in).

The most popular and universal bangle size for women worldwide is Indian size 2-6 (2.375 inches / 60.3 mm inner diameter, fitting a 19 cm hand circumference). If you have slender hands or small bone structure, choose size 2-2 or 2-4. For larger hands, choose size 2-8 or 2-10.

Bangle size 2.6 (or 2-6) means 2 inches and 6/16 of an inch inner diameter. In decimal form, this equals 2.375 inches or 60.32 millimeters (6.03 cm) inside diameter, corresponding to an inner circumference of 18.95 cm (7.46 in). It is the standard women's medium bangle size.

To measure a watch completely, you need four key dimensions: (1) Case Diameter (outer width across 9 to 3 o'clock, excluding the crown), (2) Lug-to-Lug Distance (vertical span from top lug tip to bottom lug tip), (3) Lug Width (gap where the strap connects to the case), and (4) Case Thickness (height from caseback to top crystal).

Use digital calipers or a millimeter ruler. Measure the circular watch case horizontally from 9 o'clock to 3 o'clock without including the winding crown or pushers. Standard men's watches range from 38 mm to 44 mm, while standard women's watches range from 28 mm to 36 mm.

Measure your bare wrist circumference and flat top wrist width. Follow the horological 60–75% golden ratio rule: the watch case diameter should equal 60% to 75% of your flat wrist surface width, and the total Lug-to-Lug length must never exceed your flat wrist surface to prevent overhang.

Place a rigid metric ruler flat across the face of the watch. Align the zero line with the outer metal bezel edge at 9 o'clock and read the millimeter mark at the outer bezel edge at 3 o'clock, deliberately excluding the crown.

Wrap a flexible measuring tape around your wrist where your watch sits. If your wrist is under 6.0 in (150 mm), choose 34–36mm cases. For 6.0–7.0 in (150–178 mm), choose 38–41mm cases. For 7.0–8.0 in (178–203 mm), choose 42–46mm cases.

Watch band size consists of two measurements: (1) Lug Width (width in millimeters of the gap between the case lugs, typically 18mm, 20mm, or 22mm) and (2) Band Length (the combined length of the buckle piece and hole piece, e.g. 120/80mm for standard 7-inch wrists).

Measure the inside distance between the two case lugs (the lug gap) in millimeters using the fine tick marks on a ruler. To measure the strap length, remove the strap and lay both pieces flat to measure from end to end in millimeters.

Measure the outer circular diameter of the case from the 9 o'clock edge straight across to the 3 o'clock edge in millimeters. Never include the crown, crown guards, or chronograph pushers in this measurement.

Hold a clear plastic metric ruler flat over the watch crystal. Measure horizontally across the widest point of the round case from left outer metal rim to right outer metal rim, skipping the protruding winding stem.

Measure three essential axes: (1) Case Diameter (horizontal 9-to-3 o'clock width), (2) Lug-to-Lug Distance (vertical tip-to-tip span), and (3) Case Thickness (vertical depth from caseback to crystal dome).

Wrap a paper strip, string, or charging cable around your wrist where the watch rests. Mark the overlap with a pen, lay the paper flat, and measure the marked length against a standard ruler, credit card (85.6 mm / 3.37 in), or our calibrated on-screen ruler.

Wrap a flexible tailor's tape around your wrist approximately 0.5 inches behind your wrist bone where a watch sits. Keep your arm relaxed and note the measurement in millimeters and inches.

Measure the inside gap between the watch lugs where the spring bar sits (commonly 18mm, 20mm, or 22mm). Also measure the strap width at the buckle end if you intend to reuse your existing clasp.

In horology, "watch size" almost universally refers to the outer case diameter (e.g. 40mm). The actual visible glass dial (watch face) is typically 4 to 8 mm smaller than the full case diameter due to bezel thickness.

For Apple Solo Loops, use Apple's 1–12 sizing scale: sizes 1–3 fit 130–145 mm wrists, sizes 4–6 fit 150–165 mm wrists, sizes 7–9 fit 170–185 mm wrists, and sizes 10–12 fit 190–205 mm wrists. For two-piece Sport Bands, S/M fits 130–180 mm wrists and M/L fits 150–200 mm wrists.

Unlike traditional watches measured horizontally, Apple Watch case size is measured vertically from top edge to bottom edge in millimeters. You can find your exact size engraved on the ceramic ring on the back of the watch (e.g. 40mm, 41mm, 44mm, 45mm, 46mm, 49mm).

Position precision calipers or a millimeter ruler across the 9 o'clock and 3 o'clock bezel boundaries (excluding the crown). For rectangular or tonneau cases (like the Cartier Tank), measure width × height excluding lugs.

The largest Apple Watch is the Apple Watch Ultra and Ultra 2 at 49mm case height. Among standard Apple Watch models, the largest is the Apple Watch Series 10 at 46mm (and Series 7/8/9 at 45mm, Series 4/5/6/SE at 44mm).

For wrists under 6.25 in (160 mm), choose 34–38mm cases. For wrists 6.5–7.0 in (165–178 mm), choose 38–41mm cases (the universal sweet spot). For wrists 7.25–7.75 in (184–197 mm), choose 41–44mm cases. For wrists 8.0 in+ (203 mm+), choose 44–48mm cases.

The Apple Watch SE comes in 40mm and 44mm case sizes. The 40mm SE uses 38mm/40mm/41mm/42mm (S10) compatible bands. The 44mm SE uses 42mm (old)/44mm/45mm/46mm/49mm compatible bands.

Open the caseback using a watch case wrench or pry blade. The battery model number is stamped directly on top of the button cell (e.g. 377/SR626SW, 364/SR621SW, CR2032). You can also look up the watch movement caliber number online.

Turn your Apple Watch over and look at the circular text engraved on the back casing around the heart rate sensor. The case size is clearly stamped in millimeters (e.g. 40mm, 41mm, 44mm, 45mm, 46mm, or 49mm). You can also check in the iPhone Watch app under General > About.

Apple Watch sizes divide into two band connector categories: (1) Small Case Connector: 38mm, 40mm, 41mm, and Series 10 42mm all share interchangeable bands. (2) Large Case Connector: 42mm (Series 1–3), 44mm, 45mm, 46mm, and 49mm Ultra all share interchangeable bands.

For metal link bracelets, remove links evenly from both sides of the clasp using a pin pusher or screwdriver, and fine-tune with the clasp micro-adjust holes. For leather and rubber straps, select the hole that allows one pinky finger between your wrist and the strap.

If your wrist is under 6.5 inches (165 mm), the smaller size (40mm / 41mm / 42mm S10) fits most comfortably without bulk. If your wrist is 6.5 inches or larger, the bigger size (44mm / 45mm / 46mm / 49mm Ultra) gives greater screen area and battery capacity.

Choose S/M for wrist circumferences between 130 mm and 180 mm (5.1 to 7.1 inches). Choose M/L for wrist circumferences between 150 mm and 200 mm (5.9 to 7.9 inches).

As a rule of thumb, multiply your wrist circumference in millimeters by 0.22 to find your ideal case diameter (e.g. 175 mm × 0.22 = 38.5 mm case). Ensure the lug-to-lug distance is at least 3 mm shorter than your flat wrist width to prevent overhang.

Cross-reference your wrist circumference in inches or cm on our watch size chart. Match your wrist bracket with recommended case diameters (36–44mm), maximum lug-to-lug limits (42–50mm), and two-piece strap lengths (e.g. 115/75mm or 120/80mm).