Measure yourself
Who are you on the bike? Enter height, inseam, and optional limb lengths — we’ll suggest catalog sizes by stack/reach fit, grouped as aggressive, sport, endurance, or upright.
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Who are you on the bike? Enter height, inseam, and optional limb lengths — we’ll suggest catalog sizes by stack/reach fit, grouped as aggressive, sport, endurance, or upright.
No account needed — saved in this browser session for Fit Lab too.
How to measure · Height
Stand barefoot with your heels against a wall — measure from the floor to the top of your head.
Measurements
Optional segments fill in from population ratios when blank. Thigh / lower leg refine seat-tube preference; arm and torso refine reach.
Targets ≈ stack 545 / reach 381 mm · prefer STA 72.6–74.8°
Trek Checkpoint ALR (Gen 3) 2025
Gravel · size 1 · 545/380 stack/reach
1 mm off
Seat tube 74.1° fits your preferred 72.6–74.8° band.
Ridley Kanzo Adventure (Gravel) 2025
Gravel · size XS · 546/379 stack/reach
2 mm off
Seat tube 74.5° fits your preferred 72.6–74.8° band.
Specialized Crux 2025
Cyclocross · size 52 · 547/382 stack/reach
2 mm off
Seat tube 74.5° fits your preferred 72.6–74.8° band.
Scott Speedster Gravel 2025
Gravel · size S/52 · 544.4/378.4 stack/reach
3 mm off
Seat tube 74.0° fits your preferred 72.6–74.8° band.
Quick Pro GR-ONE (Gravel) 2025
Gravel · size S/456 · 543/379 stack/reach
3 mm off
Seat tube 74.0° fits your preferred 72.6–74.8° band.