Rolex Sizes: The Complete Guide, Measured In-House

Rolex sizes currently run from 28mm to 50mm in case diameter, with most Rolex collections falling between 36mm and 42mm. Diameter is only part of the story. After decades of putting watches on customers’ wrists at Bob’s Watches, I can tell you that thickness and lug-to-lug decide how a Rolex actually wears, so this guide measures all three.

Key Takeaways

The current Rolex catalog spans 28mm (Lady-Datejust) to 50mm (Deepsea Challenge), with the core of the lineup at 36mm to 42mm.

Lug-to-lug distance, not diameter, is the number that determines whether a watch fits your wrist.

Rolex publishes case diameter only; the thickness, lug-to-lug, and weight figures in this guide are measured in-house on watches in our inventory.

A 41mm Submariner and a 41mm Datejust wear very differently because of case shape and lug design.

Two years of our own sales data show 40mm is the most popular Rolex size, at one in three sales, while sizes 36mm and under account for over 40 percent of everything we sell.

Women are increasingly buying across the whole size range, from 28mm to 41mm, and I think that is the healthiest trend in watch collecting right now.

I am Carol Altieri, COO of Bob’s Watches. Between our showroom, our service department, and the thousands of watches that move through our vault every year, sizing questions are the ones I answer most. Here is everything I wish every buyer knew before choosing a size, starting with the numbers themselves.

Rolex Size Chart: Every Current Model, Measured In-House

Rolex case sizes range from 28mm to 50mm across the current collection. In the table below, I cover the highest-demand collections first. Dimensions were taken with digital calipers on watches in our inventory, as well as from other reputable sources; weights are on full factory bracelets, sized for an average wrist.

Rolex Current Reference Measurements Table

Model (current reference) | Diameter | Thickness / Lug-to-Lug / Weight
Submariner Date (126610) | 41mm | 12.5mm / 47.6mm / ~155g
Submariner No-Date (124060) | 41mm | 12.5mm / 47.6mm / ~150g
Daytona (126500LN) | 40mm | 11.9mm / 46.5mm / ~140g
GMT-Master II (126710GRNR) | 40mm | 12.0mm / 47.6mm / ~132g (Jubilee) – 142g (Oyster)
Datejust 41 (126300) | 41mm | 11.9mm / 46.5mm / ~134g (Jubilee) – 144g (Oyster)
Datejust 36 (126200) | 36mm | 11.5mm / 44.0mm / ~118g (Jubilee) – 124g (Oyster)
Day-Date 40 (228238) | 40mm | 12.0mm / 47.0mm / ~230g (yellow gold)
Oyster Perpetual 41 (124300) | 41mm | 11.6mm / 47.0mm / ~138g
Oyster Perpetual 36 (126000) | 36mm | 11.6mm / 44.0mm / ~114g
Explorer 40 (224270) | 40mm | 11.6mm / 46.5mm / ~140g
Explorer 36 (124270) | 36mm | 11.5mm / 44.0mm / ~116g
Explorer II (226570) | 42mm | 12.5mm / 50.5mm / ~160g
Sea-Dweller (126600) | 43mm | 15.0mm / 51.0mm / ~195g
Deepsea (136660) | 44mm | 17.7mm / 51.5mm / ~250g
Yacht-Master 40 (126622) | 40mm | 11.7mm / 47.0mm / ~145g
Air-King (126900) | 40mm | 11.6mm / 48.0mm / ~144g
Sky-Dweller (336934) | 42mm | 14.1mm / 50.0mm / ~165g (Oyster) – 174g (Jubilee)
Land-Dweller 40 (127334) | 40mm | 9.7mm / 46.5mm / ~140g
Land-Dweller 36 (127234) | 36mm | 9.7mm / 43.5mm / ~118g
Lady-Datejust (279160) | 28mm | 10.5mm / 34.5mm / ~70g
Perpetual 1908 (52508) | 39mm | 9.5mm / 47.0mm / ~75g (on leather strap)
Deepsea Challenge (126067) | 50mm | 23.0mm / 61.0mm / ~251g (RLX Titanium)

Weights taken on full factory bracelets. Current-model references verified against the Rolex catalog following Watches & Wonders 2026.

Major Discontinued References (Pre-Owned Market)

Discontinued Rolex references make up much of the pre-owned market, and by our sales data the 40mm size, largely built on these references, remains the most popular Rolex size of all. These are the discontinued cases we measure and handle most often.

Reference (model) | Diameter | Thickness / Lug-to-Lug / Weight
16610 / 114060 (Submariner) | 40mm | 12.8mm / ~46.8-48mm / ~135g-158g
116500LN / 116520 (Daytona) | 40mm | 12.2mm / ~46.5mm / ~140g – 144g
16710 / 116710 (GMT-Master II) | 40mm | 12.0mm / ~47.0mm-48.0mm / ~117g – 152g
126710BLRO “Pepsi” (GMT-Master II) | 40mm | 12.0mm / ~47.6mm / ~142g
214270 (Explorer 39) | 39mm | 11.5mm / ~47.0mm / ~133g – 136g
126660 (Deepsea) | 44mm | 17.7mm / ~51.5mm / ~228g
116400 / 116400GV (Milgauss) | 40mm | 13.5mm / ~48.5mm / ~157g
79240 and related (Lady-Datejust 26) | 26mm | 26mm / ~10.5mm-32.5mm / ~55g
Datejust II (116300 series) | 41mm | 12mm / ~49.5mm / ~150g

All references above are out of production and available pre-owned only. Bracelet width runs 20mm on most 36mm to 40mm references, 21mm on 41mm sports models, and 13mm on the 26mm Lady-Datejust.

How to Measure a Rolex Case Size

Measuring a Rolex case takes a watch caliper and about thirty seconds when you know where to place them. Case diameter is measured across the bezel from the 9 o’clock side to the 3 o’clock side, excluding the winding crown. Lug-to-lug is measured vertically, from the tip of the top lugs to the tip of the bottom lugs. Thickness is measured from the caseback to the highest point of the crystal.

Use digital calipers, not a ruler. A ruler cannot resolve the half-millimeter differences that separate Rolex sizes.

Measure across the bezel at 9 to 3, never corner to corner, and never including the crown.

No calipers? Measure the inside diameter of a caseback opening tool, or bring the watch to us. We measure watches every day.

“When we measure a case, the calipers go across the bezel at 3 and 9 with the crown excluded. Include the crown and you will overstate a Submariner by nearly two millimeters, and that is exactly how mismeasured watches end up misdescribed online.“
Joe Alessindrini, CFO at Bob’s Watches

One practical note from my side of the business: if you are measuring your watch because you are getting ready to part with it, the reference number engraved between the lugs at 12 o’clock tells us more than any measurement. I would recommend having it handy when you request a quote through our Sell My Rolex page to get a faster, and sharper offer.

Why Two Rolexes With the Same Case Size Wear Differently

Two Rolex watches with identical case diameters can wear like entirely different watches, and I see the surprise on customers’ faces every week when they experience it firsthand. Four factors beyond the three core measurements explain it.

Lug Shape and Thickness

Lug design changes perceived size more than a millimeter of diameter does. The current 41mm Submariner ref. 124060 and the previous 40mm ref. 114060 feel remarkably similar on the wrist because the older watch carries slightly thicker lugs. Go back further and the effect reverses: the ref. 116610 wears noticeably larger than the ref. 16610 despite both being 40mm, because its broad-shouldered case and heavier crown guards fill more of the wrist.

Bezel Proportions

Bezel width and slope alter wrist presence at identical case dimensions. The classic example is the vintage Daytona pair, refs. 6263 and 6265: identical case proportions, but the 6263’s wider, flat acrylic bezel gives it visibly more presence than the sloped steel bezel of the 6265. I love showing these two side by side; no spec sheet prepares you for the difference.

Crystal and Dial Opening

The larger the crystal relative to the case, the larger the watch feels. The Submariner and the Datejust 41 share a 41mm diameter, yet the Datejust wears bigger because its wide crystal and slim bezel devote more of the case to the dial. Dive watches hide size in their bezels; dress watches show it all.

Bracelet Width and Taper

Lug width, the gap between the lugs that sets your bracelet or strap width, runs about 20mm on most 36mm to 40mm Rolex models and 21mm on the current 41mm Submariner, and it shapes how the watch carries. A strongly tapered Jubilee wears smaller than a blocky Oyster of the same width, and a NATO strap makes any watch sit taller and larger. When a customer tells me a watch feels too big, the fix is sometimes the bracelet, not the case.

What Size Rolex Fits Your Wrist?

The right Rolex size for your wrist depends on your wrist circumference and, just as much, on the lug-to-lug of the specific model. My personal rule from the showroom floor: the lugs should never overhang the flat of your wrist. I feel like this rule should be followed by every watch collection. Here is how I guide customers.

Under 6.5 inches: 34mm to 39mm is the sweet spot. The Explorer 36, Datejust 36, OP 34, and Land-Dweller 36 all wear beautifully. I would steer you away from the Explorer II and Sea-Dweller; their lug-to-lug will overhang.

6.5 to 7.25 inches: almost the entire catalog is open to you. This is where the 36 versus 41 debate lives, and honestly, I like a 36mm on this wrist range more often than customers expect.

Over 7.25 inches: 40mm and up wears naturally, and the Sea-Dweller, Deepsea, and Sky-Dweller finally look proportional rather than imposing.

When looking at these watches online or in a display case, I have learned that the diameter alone will mislead you. The Submariner’s broad-shouldered case, what collectors call the Super Case on the previous generation, wears larger than its 41mm suggests, while the Land-Dweller’s thin 9.7mm profile makes a 40mm feel almost delicate. This is exactly why I publish the thickness and lug-to-lug in the chart above; Rolex does not, and those two numbers are the difference between a watch you wear daily and one that sits in the box.

“The single biggest mistake I see buyers make is shopping by diameter alone. A 40mm Daytona and a 41mm Submariner wear like two different watches because of lug-to-lug and case profile. Know all three numbers before you buy, or better yet, put it on your wrist.”
Joe Alessindrini, CFO at Bob’s Watches

What Sizes Rolex Buyers Actually Choose

The numbers I pulled from our own sales data settles the size debate better than any opinion. Across two years of Bob’s Watches sales, from August 2024 through August 2026, 40mm accounts for one in three of all Rolex watches sold, making it the most popular size by a wide margin. The 36mm case is second at roughly 21 percent of sales, and 41mm third at about 13 percent. Here is the number that surprises people: sizes 36mm and under make up over 40 percent of everything we sell. The market never actually abandoned classic sizing, whatever the marketing of the big-watch era suggested.

Speed tells its own story. The 41mm case is our fastest-moving size, selling in a median of 10 days from the moment it hits the site, with 26mm close behind at 12 days. The 40mm and 36mm sizes both median 15 days. When the two most in-demand sizes by velocity sit at opposite ends of the range, 41mm and 26mm, you have all the proof you need that there is no single “right” Rolex size.

Deciding between the two most common Datejust sizes? We wrote a dedicated comparison of the Rolex 36mm versus 41mm question that goes deeper than I can here.

Rolex Submariner Size

Our pre-owned Rolex Submariner selection measures 41mm in diameter in its current generation (refs. 126610 and 124060), up from the 40mm case it carried from the 1960s through 2020. The current case size is at 12.5mm thick and 47.6mm lug-to-lug, with the Date version at roughly 155 grams on its Oyster bracelet. When I wear this watch I feel that it looks larger than the numbers suggest because of its wide bezel and flat caseback. I consider the Submariner the reference point every other dive watch is measured against, literally and figuratively. It is also the best-selling model in both our 40mm and 41mm size categories, and 41mm watches are the fastest movers in our entire inventory, selling in a median of 10 days.

Rolex Daytona Size

The Rolex Daytona collection measures 40mm in diameter across the current 126500-series line. It is one of the thinnest sports models that I have worn in the catalog at 11.9mm, with a 46.5mm lug-to-lug that lets it sit comfortably on wrists for those who find the Submariner too broad. If you have ever wondered why the Daytona feels smaller than a Submariner despite only 1mm of difference on paper, the answer is in those two unpublished numbers. It is my favorite-wearing steel sports Rolex, and I say that having tried them all.

Rolex GMT-Master II Size

The full collection of Rolex GMT-Master II watches is offered in a 40mm in diameter, a size the model has held since 1959 in spirit if not exact execution. The current generation runs about 12mm thick with a 47.6mm lug-to-lug. Following the discontinuation of the blue-and-red “Rolex Pepsi” bezel at Watches & Wonders 2026, the current catalog centers on the “Batman,” “Bruce Wayne,” and “Sprite” bezels, all in the same 40mm case. Pre-owned is now the only route to a Rolex Pepsi, and demand for it in our showroom has been remarkable.

Rolex Datejust Sizes

If I am excluding ladies references, the Rolex Datejust models come in three current sizes: 31mm, 36mm, and 41mm, and the discontinued midsize sizes remain widely available pre-owned. The 36mm is the classic and, in my opinion, the most universally flattering watch Rolex makes; it is also, by our sales data, the single most popular sub-40mm watch we sell, by a factor of more than four over the next model. Because sizing is the defining question for this collection, we maintain a dedicated Rolex Datejust sizes guide with measurements for every generation; use it if the Datejust is your target.

Rolex Day-Date Sizes

The Rolex Day-Date watches are produced by the brand in both 36mm and 40mm, and only in precious metal, which changes the wearing experience entirely. A yellow gold Day-Date 40 on its Presidential bracelet weighs roughly 230 grams, well over twice a steel Datejust, and I can feel every gram (in a good way). At Watches & Wonders 2026 Rolex introduced the new proprietary Jubilee Gold alloy on the Day-Date 40, which tells you where the brand thinks its flagship is headed.

Rolex Oyster Perpetual Sizes

As we move through the natural progression of timepiece, I feel like it is a good time to transition to one of the popular models among new collectors, the Rolex Oyster Perpetual collection. The model is offered in five sizes: 28mm, 31mm, 34mm, 36mm, and 41mm, the widest size range of any single Rolex collection. That range is exactly why I send first-time buyers here. Whatever your wrist, there is an OP that fits it, and the 2026 centenary editions with their commemorative details have brought new energy to the line.

Rolex Explorer and Explorer II Sizes

The Rolex Explorer model currently comes in 36mm (ref. 124270) and 40mm (ref. 224270); the 39mm ref. 214270 ended production in 2021 and is now pre-owned only. The Explorer II is a single 42mm reference, the 226570, and its long 50.5mm lug-to-lug makes it the most size-demanding steel sports model in the catalog. The 36mm Explorer is the watch I recommend most often to buyers who want one Rolex for everything.

Rolex Sea-Dweller and Deepsea Sizes

If you’ve already read my guide on the Sea-Dweller, you know how much I like this model. As you browse Rolex Sea-Dweller watches on our site, you’ll quickly notice this large sized model measures 43mm and the Deepsea measures 44mm in the current ref. 136660, which replaced the 126660 in 2022. The Deepsea’s 17.7mm thickness is the real number to reckon with; it will not slide under most shirt cuffs, and I tell customers that honestly. The 50mm Deepsea Challenge sits at the extreme end of the catalog and is, frankly, an engineering statement more than a daily watch.

Rolex Yacht-Master Sizes

If I were to pick one of the larger sized Rolex watches for someone that wants a strong presence on their wrist, this would be a top contender. Our Rolex Yacht-Master watches for sale comes in 37mm, 40mm, and 42mm cases, and the 44mm Rolex Yacht-Master II returned to the catalog at Watches & Wonders 2026 after a two-year absence. This means that there are many good size options depending on what feels best, and how you want the watch to look on your wrist. The Yacht-Master 40 is the sports Rolex I most often put on customers who found the Submariner too tall; its slimmer 11.7mm case makes a real difference under a cuff.

Rolex Air-King, Sky-Dweller, and Land-Dweller Sizes

The Rolex Air-King watch measures 40mm, the Sky-Dweller 42mm, and the Land-Dweller, introduced in 2025, comes in 36mm and 40mm. The Land-Dweller deserves special mention: at roughly 9.7mm thick with an integrated bracelet, it is the thinnest sports model Rolex currently makes, and it wears unlike anything else in the catalog. I think it is the most important sizing development from Rolex in a decade.

Rolex Sizes for Men, Women, and Everyone In Between

Rolex does not officially designate most models by gender, and the market has moved decisively in the same direction. The traditional framing put men at 40mm and up, women at 31mm and under, and called 34mm to 36mm midsize. I watch what actually leaves our showroom, and that framing is obsolete.

Women’s Rolex Sizes

Women’s Rolex sizes officially center on the 28mm Lady-Datejust and 31mm Datejust and Oyster Perpetual, but the real story is broader, and our data proves it. The discontinued 26mm Lady-Datejust accounts for nearly one in ten of all Rolex watches we sell, and its share of our sales grew year-over-year, from about 9 percent to over 10 percent. A size Rolex stopped making years ago is one of the strongest performers in our showroom, selling in a median of just 12 days. Women’s Rolex sizing has its own history: vintage cocktail watches ran as small as 12mm, the Oyster Perpetual was offered at 24mm until 2020, and the Lady Yacht-Master came in at 29mm. At the same time, every month I meet more women buying 36mm Datejusts, 36mm Explorers, and 41mm Oyster Perpetuals for themselves. My own preference is a 36mm, and I wear it without a second thought. Buy the size you love, not the size a marketing category assigns you.

Men’s and Unisex Rolex Sizes

Men’s Rolex sizes traditionally start at 36mm, and a 36mm Rolex is absolutely a men’s watch; it was the men’s standard for half a century, on wrists from Paul Newman’s to every president who wore a Day-Date 36. Perspective helps here: the average men’s watch in the 1950s measured just 33mm to 35mm. The 39mm to 41mm band is today’s mainstream, and anything above 42mm is a deliberate statement. The pre-owned market is where the whole size spectrum stays alive, since discontinued sizes like the 39mm Explorer and 26mm Lady-Datejust never really leave circulation.

Finding Your Rolex Size: A Final Word

Rolex sizing comes down to three numbers, and only one of them is printed in the catalog. Diameter gets the headlines, but thickness and lug-to-lug decide whether a watch disappears onto your wrist or fights it all day. Measure your wrist, check the chart above, and when two sizes both seem right, try both on. The answer is always obvious in person and almost never obvious on paper.

At Bob’s Watches we keep nearly the entire modern Rolex catalog, and much of the vintage one, physically in inventory, which is why we can measure what Rolex does not publish and why you can try sizes side by side in our showroom. If this guide leaves you between two sizes, come see us, or call and ask for me. Sizing conversations are my favorite part of this business.

Frequently Asked Questions
A Rolex case is measured with calipers across the bezel from the 9 o’clock side to the 3 o’lock side, excluding the winding crown. Lug-to-lug is measured vertically across the tips of the lugs, and thickness from the caseback to the top of the crystal. Including the crown is the most common measuring mistake and adds about two millimeters. The biggest Rolex in the current catalog is the 50mm Deepsea Challenge, followed by the 44mm Deepsea and Yacht-Master II. The smallest current Rolex is the 28mm Lady-Datejust, while the discontinued 26mm Lady-Datejust remains available pre-owned. A wrist under 6.5 inches is best served by Rolex models between 34mm and 39mm, such as the Explorer 36, Datejust 36, Oyster Perpetual 34, and Land-Dweller 36. Lug-to-lug matters more than diameter; keep it under about 45mm and the watch will sit within the flat of the wrist. Women’s Rolex watches officially center on 28mm and 31mm sizes in the Lady-Datejust, Datejust, and Oyster Perpetual lines. In practice, women today buy across the full range from 28mm to 41mm, and the discontinued 26mm Lady-Datejust remains popular in the pre-owned market. The Rolex Submariner is 41mm in diameter in its current generation, with an in-house measured thickness of 12.5mm and a lug-to-lug of 47.6mm. Earlier generations, produced from the late 1950s through 2020, measure 40mm. The most popular Rolex size is 40mm, which accounts for one in three pre-owned Rolex sales at Bob’s Watches over the past two years, led by the Submariner, GMT-Master II, and Daytona. The 36mm case is second at roughly 21 percent of sales, and sizes 36mm and under together make up over 40 percent of the market. The Rolex Daytona is 40mm in diameter, and at 11.9mm thick with a 46.5mm lug-to-lug it is one of the slimmest sports models Rolex makes. The Daytona has never been produced in a larger modern case size.

Measurement methodology: digital calipers and calibrated scale, watches from Bob’s Watches inventory, weights on full factory bracelets. Sales-demand figures are computed from completed Bob’s Watches Rolex orders, August 2024 through August 2026, expressed as percentages and median days to sell. Measurements as of 8/17/2026. Current-model list verified 8/17/2026; next scheduled re-verification after Watches & Wonders 2027.