Check the size chart for your bike
Once you know the bike type or model you are considering, use the manufacturer's chart to confirm the frame range. Each brand uses its own geometry and labels, so start with matching your height to a starting frame size, then refine it with the brand charts below.
46 brands
5 bike categories
Published sizing ranges
Showing 46 of 46 brand charts
ChinaEst. 20118 popular modelsAVASTAMountainHybridKidsAVASTA is a value-tier Amazon-direct brand that prices entry-level mountain, hybrid, and kids' bikes between $160 and $280. Sizing is wheel-diameter and rider-height driven - adult MTBs come in 26" and 27.5" wheels, women's hybrids in 26" step-through and 700C step-over, and kids' bikes in 18", 20", and 24". Frames are sold in a single height per wheel size with adjustable saddle and handlebars rather than per-size geometry, so pick by wheel size and Amazon's published rider-height range.ItalyEst. 18855 popular modelsBianchiRoadGravelBianchi still uses numeric road sizes, but the fit changes by model. Start with the published height and inseam row, then compare stack and reach on the exact Oltre, Specialissima, Infinito, Impulso Pro, or Arcadex you plan to ride.SwitzerlandEst. 19945 popular modelsBMCRoadMountainGravelBMC applies their Tuned Compliance Concept (TCC) across every frame size, engineering specific carbon layup schedules so that ride quality and stiffness remain consistent whether you ride a 47 or a 61. Their Swiss-engineered approach uses numeric sizing for road and gravel platforms and letter-based sizing for mountain bikes, with each size receiving independent structural analysis to optimize the balance between lateral rigidity and vertical compliance.United StatesEst. 197117 popular modelsCannondaleRoadMountainHybridGravelE-BikeCannondale does not use one size system across every bike. Current road bikes such as the SuperSix EVO and Synapse use numeric labels, Topstone gravel bikes and most mountain or hybrid models use letters, and a few compact or low-step e-bikes have their own size runs. Start with the exact model's height range, then check inseam against standover and compare stack and reach.GermanyEst. 198516 popular modelsCanyonRoadMountainHybridGravelE-BikeCanyon uses their Perfect Positioning System (PPS) to match riders to frames based on detailed body measurements. As a direct-to-consumer brand, they provide extensive online fit tools and sizing guidance, with geometry optimized for each size to maintain consistent handling characteristics.CanadaEst. 19955 popular modelsCervéloRoadGravelCervélo uses numeric sizing across road and gravel, but the fit still changes by frame family. Start with the published height and inseam range, then compare stack, reach, and cockpit adjustment on the exact R5, S5, Caledonia-5, Áspero-5, or P5 you want.GermanyEst. 199314 popular modelsCubeRoadMountainHybridGravelE-BikeKidsCube employs their Size Split System, offering precise frame sizing across an extensive range from XS to XXL to accommodate a wide spectrum of riders. Their geometry is engineered for balanced handling at every size, with stack and reach values carefully tuned so that each frame delivers the same intended ride character regardless of rider height.ChinaEst. 20189 popular modelsCUBSALAKidsMountainCUBSALA is an Amazon-direct BMX specialist. The lineup tiers riders by skill - Beginner (Echo, Freestyle), Intermediate (Yaphet), Expert (Syzygy), Race (Trident) - and by age (12"/14"/16"/18"/20"/24" wheels). All sizing is done by rider height and age range; no published frame stack/reach, so size by wheel diameter and the age window in each listing.United StatesEst. 197715 popular modelsDiamondbackMountainRoadGravelHybridKidsDiamondback focuses on making quality cycling accessible with bikes that deliver reliable performance across every price point. Their sizing uses straightforward height-based recommendations that make it easy for new riders to find the right fit, while their higher-end models feature geometry comparable to boutique brands at a fraction of the cost.United StatesEst. 19858 popular modelsDynacraftKidsMountainDynacraft is a California-based mass-market bike maker that owns the Magna in-house line and builds licensed kids' and BMX bikes under Tony Hawk, Hot Wheels, Disney, and Marvel branding. Their entire catalog is wheel-size-keyed (16, 20, 24, 26 in) rather than frame-cm-sized so parents can pick by the child's height, no fit appointment needed. The bikes ship 90 percent assembled with a steel frame, a coaster or single rim brake on smaller wheels, and a Shimano twist-shift drivetrain on the 24 in and 26 in adult-sized models. Expect a budget, recreational ride - heavier than premium kids' bikes from Woom or Specialized, but a fraction of the price.United StatesEst. 20184 popular modelsElite BMXKidsMountainElite BMX builds entry-level and mid-range freestyle BMX bikes sized by wheel diameter rather than seat-tube length. Every model uses a single rigid steel frame per wheel size with adjustable stem and seatpost - riders pick the wheel that matches their height, then dial in fit through the seatpost height (typically inseam × 0.85 for street BMX).United StatesEst. 20016 popular modelsFeltRoadGravelFelt's sizing draws on their deep roots in triathlon and time trial engineering, where millimeters of fit adjustment directly impact performance and aerodynamics. Their frames use numeric sizing increments to provide granular options, and each size receives dedicated aerodynamic profiling rather than uniform tube shapes. Felt's Bayonet fork system and integrated cockpit designs mean correct frame sizing is critical, as stem and spacer adjustability is intentionally limited to preserve aerodynamic integrity.United StatesEst. 20078 popular modelsFirmstrongHybridKidsFirmstrong sizes its beach cruisers by wheel diameter rather than seat-tube length. Each adult model uses one 26" frame size with 3-4 inches of seatpost adjustment to fit riders 5'2" to 6'2"; tall riders or those wanting a more stretched-out chopper feel size up to the Urban Deluxe or Chief forward-pedal frames. Kids' Bruiser and Urban models step down to 16" and 20" wheels and are picked by the child's height, not their age.JapanEst. 18995 popular modelsFujiRoadMountainHybridGravelWith over 125 years of bicycle manufacturing heritage, Fuji designs their sizing to be accessible across a broad spectrum of riders, from first-time cyclists to seasoned racers. Their approach balances Japanese precision engineering with approachable geometry, offering numeric frame sizes on road and gravel models for fine-tuned fit and letter sizes on mountain and hybrid bikes for simplified selection. Fuji's commitment to value means each size receives the same attention to ride quality, ensuring consistent performance whether on an entry-level alloy or a top-tier carbon frame.TaiwanEst. 197215 popular modelsGiantRoadMountainHybridGravelE-BikeGiant pioneered compact road geometry and uses overlapping letter sizes, including an M/L between Medium and Large. Height and inseam get you close. For the final choice, compare stack and reach on road bikes; on mountain bikes, check reach, wheelbase and whether the dropper can sit low enough. Liv has its own geometry, so a Giant size does not translate directly.United StatesEst. 19725 popular modelsGTMountainGravelHybridGT's iconic Triple Triangle frame design isn't just visual-it provides additional rear-end stiffness and compliance that influences how each size rides, giving their bikes a distinct feel under power. With roots in BMX and decades of gravity racing heritage, GT sizes their bikes to encourage an active, centered riding position that rewards riders who like to push their limits on varied terrain. Note: GT paused new product releases in late 2024 and has been selling through existing inventory since, so the models below are the last released generation rather than a refreshed annual line-up. Warranty and service are handled by Cycling Sports Group.GermanyEst. 19955 popular modelsHaibikeMountainHybridHaibike designs their frames around the integration of powerful Bosch and Yamaha e-bike drive systems, ensuring that motor weight and battery placement are factored into every size's center of gravity. Their sizing prioritizes stability and confident handling across all four frame sizes, with geometry tuned so that the added mass of the motor and battery feels natural whether climbing steep trails or descending technical terrain.ChinaEst. 200014 popular modelsHILANDMountainRoadHybridKidsHILAND is an Amazon-native value bike brand offering complete mountain, road, hybrid, kids, and BMX bikes at entry-level prices. Their sizing follows wheel-size and rider-height ranges rather than published stack/reach geometry. Most adult mountain and hybrid bikes are sold as 26", 27.5", or 700c with 16.5"-18" steel or aluminum frames. Pick by rider height: 26" for 5'-5'8", 27.5" for 5'4"-6'3", 29" for 5'9"+. Kids' bikes use wheel size matched to age and inseam, the same as other budget brands.United StatesEst. 18929 popular modelsHuffyMountainKidsHybridHuffy is America's most recognized bicycle brand, focused on affordable, family-friendly bikes that get people riding without breaking the bank. They use wheel-size-based sizing for kids and BMX models, and rider-height ranges for adult mountain bikes - making it easy for first-time buyers to select the right bike. Their sizing is straightforward: choose by wheel size or height range, and you'll have a comfortable fit right out of the box.ChinaEst. 201512 popular modelsJoystarKidsJoystar is a kids-and-toddler bike specialist focused on accessible, decorated, and confidence-building first bikes. Their lineup is sized by wheel diameter (10"-20") tied to age and rider height, with removable training wheels, doll seats, baskets, streamers, and DIY decals built into many models. Almost every Joystar bike is marketed for a specific age band and arrives 85% pre-assembled with a limited lifetime warranty on the steel frame.United StatesEst. 19994 popular modelsJulianaMountainJuliana is Santa Cruz's women's mountain bike brand, building bikes with the same carbon layup technology and VPP suspension platform but optimized for women riders. Each frame size features proportional geometry, lighter suspension tunes, and component choices designed for typical women's body proportions-shorter reach, narrower bars, and lighter-action brakes ensure that every size delivers confident, predictable handling.CanadaEst. 19885 popular modelsKonaMountainGravelHybridKona designs bikes for real-world adventure, drawing on decades of experience in the Pacific Northwest's rugged terrain and a deep commitment to steel-frame craftsmanship. Their sizing approach favors a balanced riding position that works for all-day comfort on long gravel tours, technical singletrack, and daily commutes alike, with generous tire clearance and rack mounts built into the geometry from the start.TaiwanEst. 20087 popular modelsLivRoadMountainHybridGravelLiv designs its frames and contact points around women-focused fit data. They are not smaller copies of Giant bikes. Height and inseam give you a starting size, but the range changes by model and year, so compare stack and reach when moving between Langma, Avail, Devote and Intrigue.United StatesEst. 19864 popular modelsMarinMountainGravelHybridRoadKidsBorn in the birthplace of mountain biking, Marin designs bikes with a focus on versatile trail performance and rider confidence. Their MultiTrac suspension and progressive geometry ensure consistent handling across all frame sizes, with reach and stack numbers that scale proportionally to deliver the same ride feel from XS to XL.ChinaEst. 20203 popular modelsMarKnigRoadMountainMarKnig is an Amazon-direct budget brand that sells a tiny, focused lineup: two 700C road bikes and one 26" hardtail mountain bike, all built around a single-frame, adjustable-fit philosophy. Every model uses one frame size for riders 5'2"-6'0" with quick-release seatpost and adjustable handlebars - so sizing is by rider height, not by labelled S/M/L. Maximum rider weight is 330 lb across the lineup.TaiwanEst. 197212 popular modelsMeridaRoadMountainHybridGravelE-BikeKidsMerida uses familiar letter and numeric labels on many road, gravel and utility bikes. Modern mountain platforms such as ONE-SIXTY and ONE-FORTY use AGILOMETER sizing instead. Their low seat tubes let riders choose a shorter reach for agility or a longer one for stability. Older inch-based Merida charts do not map directly to these current frames.United StatesEst. 19749 popular modelsMongooseMountainKidsMongoose is best known for BMX and affordable mountain bikes, using wheel-size-based sizing for most models rather than traditional frame measurements. Their bikes are designed to be accessible to beginners and value-conscious riders, with straightforward sizing that's easy to follow. Simply match your height to the recommended wheel size, and you're ready to ride.CanadaEst. 19644 popular modelsNorcoMountainGravelRoadE-BikeKidsNorco designs bikes with their Ride Aligned geometry philosophy, ensuring that each frame size delivers proportional handling and fit. Their gravity-tuned mountain bikes feature progressive reach and stack numbers that scale consistently, so riders across the size range experience identical handling characteristics regardless of frame size.SpainEst. 184015 popular modelsOrbeaRoadMountainGravelE-BikeOrbea combines nearly two centuries of European framebuilding heritage with their MyO customization platform, allowing riders to personalize geometry contact points after selecting frame size. As a worker-owned cooperative based in the Basque Country, Orbea emphasizes rider-centric design with size-specific carbon layups and proportional geometry that scales handling characteristics consistently across their full size range.United StatesEst. 20074 popular modelsPivotMountainGravelE-BikePivot Cycles builds premium mountain bikes with their patented DW-Link suspension platform, delivering anti-squat pedaling efficiency without sacrificing small-bump sensitivity. Their sizing emphasizes proportional geometry where each frame size maintains identical handling characteristics through carefully scaled head angle, chainstay length, and bottom bracket height. Pivot recommends riders focus on reach measurements when selecting a frame size.ChinaEst. 20242 popular modelsQARSWAMountainQARSWA is an Amazon-direct mountain bike brand offering aluminum and high-carbon-steel hardtails and dual-suspension models at entry-level prices. They size by wheel diameter and rider height rather than published frame geometry. The 24" full-suspension model serves a wide 4'2"-6'0" range, while the 26"/27.5" aluminum hardtail covers riders 5'-6'3". Pick by wheel size: 24" for shorter teens and adults, 26" for average-height adults, 27.5" for taller riders.United KingdomEst. 18853 popular modelsRaleighHybridRoadKidsE-BikeAs one of the world's oldest and most recognized bicycle brands, Raleigh designs bikes that prioritize comfort and accessibility for everyday riders. Their sizing is straightforward and rider-friendly, using traditional frame measurements that make it easy for commuters, recreational cyclists, and touring riders to find the right fit without complex fitting tools.BelgiumEst. 19979 popular modelsRidleyRoadGravelRidley builds bikes around traditional race geometry refined in the cobbled Classics of Flanders and on the WorldTour with Lotto Dstny. Sizing is stack-and-reach driven with a deliberate lean toward longer, lower race positions on road frames and slightly more upright, longer-wheelbase numbers on the gravel and adventure platforms. Ridley publishes effective top tube (ETT) and traditional seat tube measurements alongside stack/reach, so riders comfortable with classic European race fit translate directly across the range; riders coming from endurance brands often size down one frame to match Ridley's reach.ChinaEst. 20078 popular modelsRoyalBabyKidsMountainRoyalBaby focuses exclusively on kids and youth bicycles, sized strictly by wheel diameter (12", 14", 16", 18", 20", 24", 26") with matching height ranges per model. The lineup spans first-pedal bikes (Freestyle, Stargirl, Dual Handbrake), 2-in-1 balance-to-pedal convertibles (EZ, Terra), magnesium-alloy lightweight frames, and an aluminum mountain bike for older kids. Frames typically include adjustable seats and bars to extend the usable height range as the child grows.United StatesEst. 19824 popular modelsSalsaGravelMountainSalsa designs bikes for adventure, from gravel races to multi-day bikepacking expeditions across remote terrain. Their geometry prioritizes stability under load and comfort over long distances, with frame sizes that accommodate frame bags, wide tires, and the kind of gear that turns a bike into a self-supported touring machine. Each size balances responsive handling with the predictability riders need when covering hundreds of miles on unfamiliar roads.United StatesEst. 19935 popular modelsSanta CruzMountainGravelE-BikeSanta Cruz designs bikes born from the steep, technical terrain of the Santa Cruz Mountains, prioritizing descending capability and rider confidence at speed. Their VPP (Virtual Pivot Point) suspension platform is tuned per frame size, and their modern geometry philosophy emphasizes longer reach and slacker head angles to keep riders centered on the bike in demanding conditions.ChinaEst. 20136 popular modelsSAVADECKRoadGravelMountainSAVADECK (also known as SAVA) specializes in affordable carbon fiber bicycles using Toray T800 carbon. They follow standard numeric frame sizing (44-56cm for road) and recommend sizing based on rider height with a race-oriented fit across most models.United StatesEst. 189511 popular modelsSchwinnKidsMountainHybridSchwinn uses traditional frame sizing with straightforward height-based recommendations designed for recreational and fitness riders. The current Amazon lineup focuses on kids bikes (Elm, Roadster, retro Sting-Ray Krate), the High Timber mountain family, Huron and Meridian cruisers, and the Network hybrid - all sized by rider height with simple S/M/L or one-size frames. Their sizing tends to run standard and is beginner-friendly, making it easy for first-time buyers to find the right fit without overthinking geometry numbers.SwitzerlandEst. 195815 popular modelsScottRoadMountainGravelE-BikeScott employs a rider-centric sizing system that pairs numeric frame sizes for road bikes with letter-based sizing for mountain bikes, ensuring each platform matches its intended riding style. Their proprietary Syncros cockpit integration means stack and reach are fine-tuned per size, delivering consistent handling and power transfer across the entire range.United StatesEst. 20056 popular modelssixthreezeroHybridE-Bikesixthreezero takes a comfort-first, universal-fit approach to sizing. Most adult models use a single frame size per wheel diameter (24" or 26") with adjustable seat posts and handlebars to accommodate a wide range of riders. Their proprietary BodyFit sizing tool matches riders to the ideal bike based on height, weight, and riding style, while their forward-pedaling design lets shorter riders achieve full leg extension without raising the seat uncomfortably high.United StatesEst. 197418 popular modelsSpecializedRoadMountainHybridGravelE-BikeKidsSpecialized uses several sizing systems. Road and gravel bikes usually have numeric labels, though the number is no longer a literal seat-tube length. Hybrids and some mountain bikes use XS-XXL. Trail and e-MTB models such as Stumpjumper, Enduro and Turbo Levo use reach-led S-Sizing. Start with height and inseam, then check the exact model's stack and reach.United StatesEst. 19984 popular modelsSurlyGravelHybridMountainCargoSurly builds steel bikes designed for real-world riding-loaded touring, daily commuting, gravel adventures, and everything in between. Their sizing prioritizes versatility and comfort over race performance, with generous tire clearance and mounting options on every frame. Surly uses numeric frame sizing (measured center-to-top of seat tube) and designs each size to accommodate a wide range of rider proportions when paired with the right stem and seatpost configuration.United StatesEst. 197618 popular modelsTrekRoadMountainHybridGravelE-BikeTrek uses a combination of traditional frame sizing with their Alpha Fit system, focusing on stack and reach measurements to help riders find the optimal position. They offer a wide range of frame sizes and geometries to accommodate different body types and riding styles.ChinaEst. 20188 popular modelsWEIZEKidsMountainWEIZE is an Amazon-direct kids and budget mountain bike specialist. Their lineup is wheel-size-driven (14", 16", 20" for kids; 24" for older kids; 26"/27.5" for adults) with most models offering adjustable seats and handlebars to extend the fit window. Sizing is by rider height and age, not frame stack/reach. Most kids' bikes ship with training wheels; the BMX and mountain models are more capable single-purpose builds.AustriaEst. 201312 popular modelsWoomKidsWoom uses a proprietary numbered sizing system (Woom 1 through Woom 6) based on precise height ranges rather than traditional frame sizes. The lineup is now sold under the GO label (formerly Original), with the off-road EXPLORE series for advanced young riders. Every component - from crank length to brake lever reach - is scaled specifically for each size, ensuring proper fit and proportional ergonomics at every stage of growth.GermanyEst. 20084 popular modelsYT IndustriesMountainYT Industries designs gravity-focused mountain bikes with a direct-to-consumer model that delivers pro-level performance at accessible prices. Their sizing emphasizes reach-based fitting with modern long-low-slack geometry, and each frame size is optimized for specific rider weights to ensure consistent suspension performance. YT's progressive approach to geometry means riders transitioning from older bikes should pay close attention to reach numbers rather than traditional standover height.
Why Use Brand-Specific Size Charts?
Brand-Specific Geometry
Each manufacturer uses unique frame geometries and sizing standards. A "Medium" from one brand may fit differently than another.
Published Sizing Ranges
Our charts organize published brand sizing ranges where available, with geometry notes to help you compare real-world fit between models.
Category-Specific Sizing
Road, mountain, hybrid, and gravel bikes have different fit requirements. Find the right size for your specific bike type.
Looking for Kids Bike Sizes?
Kids bikes are sized by wheel diameter, not frame size. Our age-specific guides help you find the right wheel size and bike for your child:
Not Sure Which Size?
Try our bike size calculators for personalized recommendations based on your measurements.