Bike Size Charts by Brand

HILAND 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.

Diamondback 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.

Joystar 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.

Woom 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.

CUBSALA 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.

Mongoose 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.

Schwinn 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.

AVASTA 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.

Firmstrong 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.

Huffy 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.

Orbea 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.

RoyalBaby 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.

Scott 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.

Trek 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.

WEIZE 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.

Canyon 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.

Giant pioneered compact geometry in road bikes and uses their Total Fit system to match riders to frames. As the world's largest bicycle manufacturer, they offer extensive size ranges and develop women's-specific geometry through their Liv brand.

Specialized uses their Body Geometry Fit system, emphasizing rider contact points and individual biomechanics. Their Rider-First Engineered approach ensures each frame size performs identically regardless of size, with optimized tube diameters and layups for each size.

Cannondale emphasizes proportional response sizing, where each frame size is engineered for specific rider weights and power outputs. Their SmartForm aluminum and BallisTec carbon technologies are optimized per size, ensuring consistent ride quality across the range.

SAVADECK (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.

sixthreezero 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.

As the world's oldest bicycle manufacturer, Bianchi uses traditional Italian numeric sizing measured in centimeters along the seat tube. Their Countervail vibration-dampening technology is integrated into the carbon layup across all sizes, and each frame is designed to preserve the classic Italian racing geometry that has defined professional road cycling for over a century.

BMC 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.

Cervélo takes an engineering-first approach to sizing, using computational fluid dynamics and wind-tunnel testing to optimize frame proportions for aerodynamic efficiency at every size. Born from triathlon heritage, their fit philosophy prioritizes rider power output and aerodynamic drag reduction, with each size receiving individually tuned tube profiles rather than simply scaling a single mold.

Cube 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.

Felt'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.

With 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.

GT'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.

Haibike 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.

Kona 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.

Liv is the world's only comprehensive cycling brand dedicated exclusively to women. Every Liv frame is designed from the ground up using a women's-specific geometry database-shorter top tubes, narrower handlebars, and proportioned reach dimensions ensure that each size delivers optimal fit without compromise. Backed by Giant's manufacturing expertise, Liv bikes are not downsized unisex frames but purpose-built machines engineered for the female body.

Merida leverages over five decades of OEM manufacturing expertise to engineer frames with precise sizing increments across their entire range. Their proprietary S-Flex and CF4 carbon layup technologies allow size-specific tuning, ensuring each frame size delivers optimized ride quality rather than simply scaling geometry up or down. As equipment supplier to the Bahrain-Victorious WorldTour team, Merida validates their sizing through elite-level feedback and wind tunnel testing.

Santa 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.

Elite 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).

Juliana 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.

Born 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.

Norco 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.

Pivot 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.

Salsa 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.

YT 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.

MarKnig 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.

As 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.

Surly 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.

QARSWA 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.