Sizing

Find your
perfect fit.

Three methods. One certainty. VOWCRAFT bands are comfort-fit — if you're between sizes, size up half.

Not sure? Order our complimentary sizing kit — no commitment required.

Sizing Methods

Three ways to
measure.

Use whichever fits your situation. All three are equally accurate when done carefully.

01

On-Screen
Ring Sizer

Place an existing ring over the circles below to find your inner diameter. Works on any screen — calibrate first.

This bar should be exactly 1 inch (25.4mm). Adjust screen zoom until it matches a ruler.

Place an existing ring flat over the circle that matches its inner edge

Sizes shown are US. Diameters: size 5 = 15.7mm, size 6 = 16.5mm, size 7 = 17.3mm, size 8 = 18.2mm, size 9 = 19.0mm, size 10 = 19.8mm, size 11 = 20.6mm, size 12 = 21.4mm, size 13 = 22.2mm.

02

String &
Paper Method

No existing ring? Wrap a thin strip of paper or string around your finger, mark where it meets, measure the length.

  1. Cut a thin strip of paper or string — about 10cm long and 5mm wide.
  2. Wrap it snugly around the base of your finger (where the ring will sit).
  3. Mark the point where the strip overlaps with a pen. For string: pinch the crossing point.
  4. Lay the strip flat against a ruler. Measure the length in millimetres — this is your circumference.
  5. Find your circumference in the conversion table below to get your US ring size.

Tip: Measure in the evening — fingers expand slightly throughout the day. Repeat 3× and use the average.

03

Measure an
Existing Ring

Already own a ring that fits perfectly? Measure its inner diameter with a ruler or calipers.

  1. Place the ring on a flat surface, face up.
  2. Measure the inner diameter — inside edge to inside edge — in millimetres. A digital calliper is ideal; a ruler works too.
  3. Find your diameter (mm) in the size chart below to get your US size.

Comfort-fit bands like VOWCRAFT's sit slightly looser on the finger than a standard flat-fit ring of the same diameter. If your reference ring is flat-fit, order the same size. If it's also comfort-fit, measure accurately.


Size Chart

International
conversions.

VOWCRAFT uses US sizing. Find your local size and convert. Most common sizes are US 6–10 for men's wedding bands.

← Scroll to see all sizes →

Circumference US UK / AU / NZ EU / FR / DE Diameter (mm)
49.3 mm5J ½49.315.7
50.2 mm5 ½K ½50.216.0
52.5 mm6 ½M ½52.516.7
55.4 mm7 ½O ½55.417.6
58.3 mm8 ½Q ½58.318.6
60.7 mm9 ½S ½60.719.4
63.2 mm10 ½U ½63.220.1
64.6 mm11V64.620.6
65.7 mm11 ½W65.720.9
67.0 mm12X ½67.021.4
68.1 mm12 ½Y ½68.121.7
69.7 mm13Z ½69.722.2

All VOWCRAFT rings are comfort-fit. If you're between sizes, order the larger half-size. Highlighted rows are the most common sizes for men's wedding bands.


Per-Form Guidance

Sizing by
ring form.

Each VOWCRAFT form has a distinct profile. Width and cross-section affect how a ring feels on the finger — here's what to know before you order.

Convexus
6mm · Domed comfort-fit

The domed outer profile sits proud of the finger, which can feel wider than it measures. The inner comfort-fit curve removes friction — but the 6mm width means fingers feel the presence.

Order your standard size. The dome profile doesn't pinch. If your knuckle is wider than the base, size up half.
View Convexus
Planus
4mm · Flat precision-fit

The flat profile and narrower 4mm width make Planus our most forgiving fit. The straight inner wall feels different from a comfort-fit band — it's precise, not clingy.

Size as normal. Narrower bands are more tolerant of half-size variations. Knuckle fit is rarely an issue with Planus.
View Planus
Arcus
5mm · Rounded comfort-fit

Classic court profile, rounded inside and out. The most universally comfortable form — the interior curve rolls over the knuckle and settles naturally. Mid-width at 5mm suits most fingers.

Size up half if your knuckle is noticeably larger than your finger base. Otherwise, your standard size is correct.
View Arcus

Complimentary Service

Not sure?
Order our sizing kit.

We'll send you a physical sizing kit — no commitment, no charge. Includes a ring sizer tool and a return envelope. Ideal for gifts or if you've never worn a ring before.