找到你的戒圍：對照表與轉換工具

Ordering a ring online without knowing your size is a gamble. The ring size tool above gives you an instant answer. Use it if you already know your size in millimeters or another system. Starting from scratch? This guide covers every method we’ve picked up from 15 years of selling rings.

The most common reason for ring returns? Wrong size. Not wrong design, not wrong material — wrong size. And it’s almost always avoidable.

什麼時候量戒指尺寸最準？

您的手指粗細會隨著一天的時間變化。天氣冷時血管收縮，手指會變細。高溫、運動、吃太鹹、潮濕的環境則會導致浮腫。血管擴張，組織會滯留多餘的水分。季節變化可能讓您的戒指尺寸浮動約半號。每天的日常變化大約是四分之一號。

建議在傍晚測量。 That’s when your fingers have settled at their largest after a full day of activity. Morning measurements tend to run small. Your body temperature is lower and your fingers haven’t fully warmed up. Avoid measuring right after exercise, a hot shower, or a salty meal. All of these expand your fingers temporarily.

如何在家測量戒指尺寸

Two methods work without special tools. The paper strip method measures your finger’s circumference — wrap a strip around the base, mark where it overlaps, measure in millimeters, then enter the number in the converter above. The existing ring method measures the inner diameter of a ring that already fits — place it on a ruler and enter the diameter using “直徑 (mm).”

想看詳細的步驟圖解、實用技巧和常見錯誤，請參閱我們的戒指尺寸測量指南。

該量哪根手指？哪隻手？

請務必測量您打算佩戴戒指的那隻手上的那根手指。左手和右手的無名指尺寸是不一樣的。慣用手的手指通常會大約半號，因為日常使用讓肌肉和肌腱更為發達。

This matters more than people think. We get returns where someone measured the wrong finger. Left ring finger for a ring going on the right index — that’s a full size off. That’s potentially a full size off.

戒環寬度如何影響配戴感

這是多數人忽略的選尺寸關鍵。較寬的戒環覆蓋更多皮膚，同樣內徑的戒指會比窄版的感覺更緊。兩枚內周長相同的戒指，戴起來可能截然不同。一枚 4mm 寬和一枚 14mm 寬的體驗完全不同。

Here’s the general guideline based on band width:

戒環寬度	尺寸調整建議
5mm 以下	選您平常的尺寸
5–6mm	加大 ¼ 號
6–8mm	加大 ½ 號
8–12mm	加大 ½ 至 1 號
12mm+	加大 1 號

這適用於我們大多數較厚重的個性戒指。不同類型的戒指有不同的寬度，而寬度直接影響您需要的尺寸。

舒適弧面 vs. 標準平面

舒適弧面戒指的內壁呈弧形——內側表面從手指彎曲離開。標準平面戒指的內壁則是平的，像水管一樣。

Comfort fit rings slide over the knuckle easier because the domed interior contacts less skin. They also feel less tight overall. Switch from standard to comfort fit? You may need to go half a size down. The domed interior makes the ring sit larger on your finger. For wide bands (8mm+), don’t automatically size down. The width and comfort fit effects can cancel each other out.

國際戒指尺寸系統說明

There’s no universal ring size standard. Each country developed its own system independently. No single chart covers all of them. That’s why ring size conversion matters. A number used in the US means something different in Japan or the UK.

制式	使用地區	格式
美國 / 加拿大	美國、加拿大、墨西哥	數字 (0–17+)，含半號
英國 / 澳洲	英國、澳洲、紐西蘭、南非	字母 (A–Z，之後為 Z+1、Z+2...)
日本 / 中國	日本、中國、韓國	數字 (1–36)
歐洲	德國、法國、北歐、歐洲大部分地區	周長 mm (41–76+)

A US 7 and a UK N are close — but not identical. The chart and tool on this page handle the math. You don’t have to guess. If you’re buying from an overseas retailer, always convert before ordering.

How to Find Someone’s Ring Size (Without Them Knowing)

The most reliable method is borrowing a ring they already wear on the target finger — trace the inside on paper, measure the diameter, and enter it in the converter above. If that’s not possible, ask a friend or family member, or use average sizes as a starting point (men typically US 9–10, women US 6–7).

我們在戒指尺寸測量指南中詳細介紹了三種驚喜量尺寸的方法。

常見的戒指選尺寸錯誤

We’ve shipped thousands of rings. These are the sizing mistakes we see over and over:

戒指應該多緊才合適？

A properly fitting ring slides over your knuckle with slight resistance. Then it sits snugly at the base. It should not spin freely — if it rotates on its own, it’s too loose. But you should be able to remove it without soap, lotion, or force.

The “shake test” is quick: make a fist, then relax and shake your hand downward firmly. The ring should stay on. If it flies off, it’s too loose. If you can’t get it past the knuckle without pushing hard, it’s too tight.

戒指可以改尺寸嗎？

Simple bands in sterling silver or gold can usually be resized by about one size. Rings with engravings, set stones, or sculpted designs are harder. Stainless steel rings cannot be resized — the metal is too hard for standard jewelry tools. Getting the right size the first time matters. Our measurement guide covers which designs can and can’t be adjusted.