Diamond Education · bracelet fit

How to Size a Tennis Bracelet

Tennis bracelet sizing is the process of matching bracelet length and width to wrist circumference. Measure the wrist in millimetres where the bracelet will sit, then apply the 7mm rule: a 7mm-wide bracelet suits wrists of roughly 185–190 mm, a 6mm suits 180–185 mm. A correct fit leaves about one finger of space — snug enough to stay in place, loose enough to drape.

Arta Talachian Published 9 May 2026 · Reviewed 6 September 2026 · 1 min read
Woman seated on a chair wearing a diamond tennis bracelet and a gold station necklace

Quick Answer

Tennis bracelet sizing is straightforward but has a few nuances. The 7mm rule is the most common guideline, but it depends on wrist size and diamond carat weight. A 6mm bracelet suits smaller wrists and a 7mm bracelet suits larger wrists. Carat weight does not affect size but affects how the bracelet looks and feels. If you fall between sizes, 7mm is generally the better choice for comfort and visual balance.

Part of our complete diamond tennis bracelet buying guide.

Tennis bracelet sizing is straightforward but has a few nuances. The 7mm rule is the most common guideline, but it depends on wrist size and diamond carat weight. A 6mm bracelet suits smaller wrists and a 7mm bracelet suits larger wrists. Carat weight does not affect size but affects how the bracelet looks and feels. If you fall between sizes, 7mm is generally the better choice for comfort and visual balance.

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Quick Answer Sizing Chart

Quick Answer: How to Size a Tennis Bracelet

  • Measure your wrist — use string or tape, measure in millimeters where you want the bracelet to sit
  • 7mm rule — wrist 185–190 mm (7.3–7.5 inches) for 7mm, 180–185 mm (7.1–7.3 inches) for 6mm
  • Carat weight does not affect size
  • 6mm is more comfortable for smaller wrists; 7mm is more common and better for larger wrists
  • Tennis bracelets are flexible and conform to wrist shape

Tennis Bracelet Sizing Chart

Wrist Size (mm) Wrist Size (inches) Bracelet Width (mm) Bracelet Width (inches) Best For
180–185 7.1–7.3 6 0.24–0.26 Smaller wrists
185–190 7.3–7.5 7 0.28–0.30 Most common
190–195 7.5–7.7 8 0.31–0.33 Larger wrists

How to Measure Your Wrist

Use string or tape

Wrap around your wrist where you want the bracelet to sit, mark the overlap, measure in millimeters.

Add ease

Add 0.5–1 inch to your wrist measurement for comfortable drape. Tennis bracelets should not sit tight against the skin.

All DEEVE tennis bracelets are set in solid 14K gold and come with a lifetime warranty and free worldwide shipping. Browse Lab Grown Diamond Tennis Bracelets or shop the 6ct Tennis Bracelet directly.

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What to remember

  • Measure your wrist with string or tape, in millimetres, where you want the bracelet to sit.
  • The 7mm rule: wrist 185–190 mm suits a 7mm bracelet; 180–185 mm suits a 6mm.
  • Carat weight does not affect size — only wrist circumference does.
  • Between sizes? Choose 7mm — better comfort and visual balance.
  • Tennis bracelets are flexible and conform to the shape of your wrist.

How to Get Tennis Bracelet Sizing Right

Six checks, in order

  1. Measure the wrist with a soft string or tape where the bracelet will actually sit, then measure the string in millimetres
  2. Add 1.5 to 2 centimetres of ease — a tennis bracelet should drape rather than sit against the skin
  3. Check the width against the wrist measurement: 6mm suits 180–185mm, 7mm suits 185–190mm, 8mm suits 190–195mm
  4. If the measurement falls between two sizes, take the larger — a slightly loose bracelet is comfortable, a tight one is not
  5. Confirm the finished length before ordering, because a tennis bracelet is made to a fixed length rather than adjusted afterwards
  6. Measure at the end of the day, when the wrist is at its largest

From the bench

One finger should pass between the bracelet and the wrist. That is the fit test the trade actually uses

Higher carat weights sit heavier and rotate more, so err toward the snugger end of your range above about 7 cttw

Wrists are rarely round. Measure at the widest point of the wrist bone rather than above or below it

Mentioned above 6 Carat Lab Grown Diamond Tennis Bracelet in 14K Gold $4,510.00 View the piece

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Fit is the only thing I cannot fix after the fact on a tennis bracelet. Carat weight, metal, clasp — all of that is a choice. Length is a measurement, and a bracelet made 15 millimetres too short is a bracelet that gets worn twice. I would rather a client measure their wrist three times than once.
— Arta Talachian, 5th-Generation Master Goldsmith & Certified Gemologist

Buying Guide

How to Choose a Lab-Grown Diamond Tennis Bracelet

Carat weight sets the overall presence of the bracelet: 2–3ct suits subtle, everyday wear; 4–5ct is the most popular range for noticeable brilliance; 6–7ct makes a bold statement; 8–10ct is reserved for maximum impact. Metal colour is a matter of preference rather than durability — yellow gold offers a warm, classic look, while white gold has a cooler finish that maximizes diamond brilliance. Both are solid 14K gold on every DEEVE tennis bracelet, never plated or vermeil.

Read the complete buying guide

FAQ

Questions, answered.

How do I measure my wrist for a tennis bracelet?
Use a soft string or flexible measuring tape. Wrap it around your wrist where you want the bracelet to sit, then measure the length in millimeters. For a standard 7mm tennis bracelet, the wrist should measure approximately 185–190 mm (7.3–7.5 inches). For a 6mm bracelet, measure approximately 180–185 mm (7.1–7.3 inches). If you fall between sizes, consider the 7mm version for a more comfortable fit.
What is the 7mm rule for tennis bracelets?
The 7mm rule states that a 7mm wide tennis bracelet should fit a wrist that measures approximately 185–190 mm (7.3–7.5 inches). If your wrist is smaller, consider a 6mm bracelet; if larger, consider an 8mm bracelet.
How does carat weight affect tennis bracelet sizing?
Carat weight does not affect bracelet sizing. The size is determined solely by wrist circumference. However, carat weight affects how the bracelet looks and feels.
Should I choose 6mm or 7mm for a tennis bracelet?
6mm suits smaller wrists (180–185 mm). 7mm is the most common choice for larger wrists (185–190 mm). If you fall between sizes, 7mm is generally the better choice.
Can I wear a tennis bracelet if my wrist is not perfectly round?
Yes. Tennis bracelets are flexible and will conform to the shape of your wrist.

The DEEVE Standard

Every DEEVE tennis bracelet is crafted in solid 14K gold — never plated or vermeil — and set with lab-grown diamonds that are physically and chemically identical to mined diamonds, with guaranteed F–G colour and VS2–SI1 clarity matched across every stone. Each bracelet ships free worldwide with full insurance and tracking, and is backed by a lifetime warranty against manufacturing defects.

Found Your Size? Shop Tennis Bracelets — 2ct to 10ct

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