A complete DRC ring size guide for 2026 — measure your finger or an existing ring, estimate the nearest French/EU circumference size, compare US and UK conversions, and learn the French jewellery terms commonly useful when buying a ring in Kinshasa, Lubumbashi, Goma or elsewhere in the Democratic Republic of the Congo.
Print at 100% or “actual size”. First measure the 50 mm calibration line with a physical ruler. Only use the circles when the line prints at exactly 50 mm. Place a comfortable ring over a circle and align the ring's inside edge, not the outside metal edge.
A 52 mm inside circumference is normally described as French/EU size 52.
Example: 5.2 cm × 10 = 52 mm, so the nearest EU size is 52.
A 16.55 mm inner diameter gives about 52.0 mm circumference.
A 54 mm circumference gives an inner diameter of about 17.19 mm.
US sizes use a different scale. Confirm the seller's chart for expensive or non-resizable rings.
EU 52 is often shown as Italian size 12, but brand charts can vary.
This calculator selects the nearest whole French/EU circumference size. DRC jewellers and online sellers may use different imported sizing systems or stock only selected sizes, so confirm the actual millimetre measurement before payment or custom production.
| 🇫🇷 French / EU Size | ⭕ Circumference (mm) | 📏 Inner Diameter (mm) | ⭕ Circumference (cm) | 🇺🇸 US Approx. | 🇬🇧 UK Approx. | 🇮🇹 Italian Approx. | Range |
|---|
The examples below show how the same physical ring can be described with several labels. The first two measurements — circumference and inner diameter — are the most useful because they describe the object itself rather than relying only on a country conversion. When contacting a jeweller in the DRC, copy the relevant sentence and replace the numbers with your own result.
| Finger / Ring Measurement | French / EU Reference | Approx. US | Approx. UK | Clear Order Wording |
|---|---|---|---|---|
| 50 mm circumference 15.92 mm diameter | 50 | 5¼ | K | Taille 50; tour intérieur 50 mm; diamètre intérieur environ 15.9 mm. |
| 52 mm circumference 16.55 mm diameter | 52 | 6 | M | Taille 52; tour intérieur 52 mm; diamètre intérieur environ 16.6 mm. |
| 54 mm circumference 17.19 mm diameter | 54 | 6¾ | N½ | Taille 54; tour intérieur 54 mm; diamètre intérieur environ 17.2 mm. |
| 58 mm circumference 18.46 mm diameter | 58 | 8½ | R | Taille 58; tour intérieur 58 mm; diamètre intérieur environ 18.5 mm. |
| 62 mm circumference 19.74 mm diameter | 62 | 10 | U | Taille 62; tour intérieur 62 mm; diamètre intérieur environ 19.7 mm. |
Choose the finger on which the ring will actually be worn. The same finger on the left and right hand can differ, and a ring that fits the middle finger may not fit the ring finger. Remove other rings and let your hands return to a normal room temperature before measuring.
Cut a paper strip approximately 5 mm wide. Wrap it around the base of the finger without compressing the skin. The loop should be secure but still capable of passing over the knuckle. Avoid elastic string, thick cord and fabric tape that can stretch or twist.
Mark the precise point where the strip overlaps. Lay it flat and measure from the starting edge to the mark. Record the result as the finger's circumference. For example, a reading of 5.4 cm equals 54 mm and points to French/EU size 54, a useful reference to share with a DRC seller.
Repeat the measurement and compare the results. If the values change, check that the strip is sitting in the same position and with the same tension. Use the most consistent reading rather than a single unusually tight or loose measurement.
A broad wedding band usually feels tighter than a narrow engagement ring. Full-eternity rings, complex stone settings and engraved bands may be difficult to resize, so confirm the size with the jeweller who will supply or make the ring before placing a high-value order.
Use a round, comfortable ring worn on the exact finger you are sizing. A ring borrowed from another finger or hand can produce a misleading result.
Place the ring flat and measure straight across the widest internal point through the centre. Do not include the metal wall. A digital calliper is more precise than a thick ruler, but a clear millimetre ruler can give a useful estimate.
Turn the ring about 90 degrees and measure again. Matching readings suggest a round ring. Different readings can indicate an oval or damaged band, in which case professional sizing is safer.
Select “Existing Ring Inner Diameter in MM”, enter the result and compare it with the French/EU chart. For example, an inner diameter near 17.2 mm converts to about 54 mm circumference, or EU size 54.
Jewellery in the DRC can come from local workshops, neighbouring African markets, Europe, the Middle East, Asia or North America. For that reason, shoppers may encounter more than one label for the same physical ring. A French-speaking seller may use a circumference number such as 52 or 58, while another shop may list an inner diameter such as 16.5 mm, a US number such as 6, or a simple small/medium/large range.
The most dependable way to avoid confusion is to communicate the actual measurement. A request such as taille de bague 54 is clearer when accompanied by tour de doigt 54 mm or diamètre intérieur environ 17.2 mm. This is especially important when ordering through social media, messaging apps, a marketplace listing or an independent workshop where the displayed size convention may not be explained.
French/EU circumference sizes are used in this page as a practical conversion framework, not as a claim that every Congolese jeweller follows one mandatory retail scale. Before buying, ask the seller which system is used, whether the listed number is circumference or diameter, and whether the finished ring can be exchanged or resized.
French is the official language of the Democratic Republic of the Congo, while Kikongo, Lingala, Swahili and Tshiluba are national languages. In formal product descriptions, invoices and many urban jewellery transactions, French measurement words are therefore particularly useful. The phrases below can help when checking a size with a seller.
Ask: “Quelle taille de bague utilisez-vous?”
Give the measurement in millimetres for clarity.
Measure across the empty inside opening of a ring.
Wide alliances may require extra fitting allowance.
Check whether the stone setting permits resizing.
Confirm price, limits and turnaround before ordering.
Broad rings often need more fitting allowance than slim bands.
The ring must pass the knuckle but remain secure at the base.
Heat and cold temporarily affect finger fullness and comfort.
The same named finger can differ between left and right hands.
Eternity bands and complex settings need more precise sizing.
Rounded interiors can feel different from flat-edged interiors.
Do not assume that a number such as 17, 52 or 7 has the same meaning everywhere. Ask whether the listing uses inner diameter in millimetres, French/EU circumference, US sizing, UK letters or the seller's own small/medium/large scale. A screenshot of the seller's chart can prevent a misunderstanding.
Write the exact circumference and diameter in the message or order notes. For example: “Finger circumference 56 mm; comfortable ring inner diameter about 17.83 mm; requested French/EU size 56.” Written figures are easier to verify than a voice note alone and create a useful reference if the delivered ring does not match.
Ask for the approximate band width in millimetres and whether the inside is flat or rounded. A broad, flat interior generally feels more restrictive than a narrow or comfort-fit ring at the same nominal size. When the design is substantially wider than the ring used for measurement, request a fitting recommendation from the maker.
Find out whether the ring can be resized, the maximum adjustment possible, who pays for the work and whether stones or engraving affect eligibility. Full-eternity bands, tension settings, some plated rings and rings made from very hard or brittle materials can be difficult or impossible to alter.
Ring size, metal fineness, gemstone identity, stone treatment, weight and origin are different questions. Request an invoice that describes the item and keep copies of any certificate or test report. For a high-value purchase, consider independent verification instead of relying only on photographs, a stamp or an informal description.
Try it at a normal hand temperature and check that it passes the knuckle without pain, sits securely at the base and does not leave deep marks. Verify the inside opening with a calliper when possible. Contact the seller within the stated return period if the size or specification differs from the written order.
Use sample rings or a jeweller's sizing set and confirm the finished design's width.
Send measurements, receive the size-system confirmation and save the conversation.
Provide both the seller's requested size and the circumference or diameter in millimetres.
Confirm whether the quoted size describes the finished inside circumference after polishing.
Use a ring worn on the intended finger and choose a design with flexible exchange terms.
Use a jeweller's sizing set and obtain written material and gemstone documentation.
These external sources support the measurement method, French/EU sizing reference, language context and DRC standards or mineral-certification background used in this guide: