Mountain Bike Size Calculator

Select Gender: Enter Height (cm):

Frame Size	Rider Height (inches)	Rider Height (cm)	Top Tube Length (cm)	Seat Tube Length (cm)	Standover Height (cm)	Recommended Use
XS (Extra Small)	4'10" - 5'2"	147 - 157	51 - 53	33 - 35	66 - 68	Ideal for smaller riders, XC, and trail riding
S (Small)	5'2" - 5'6"	157 - 168	53 - 55	35 - 38	68 - 70	Suitable for XC, trail, and light all-mountain
M (Medium)	5'6" - 5'10"	168 - 178	55 - 57	38 - 43	70 - 73	Great for XC, trail, and all-mountain riding
L (Large)	5'10" - 6'2"	178 - 188	57 - 59	43 - 48	73 - 76	Suitable for trail, all-mountain, and enduro
XL (Extra Large)	6'2" - 6'4"	188 - 193	59 - 61	48 - 53	76 - 78	Ideal for taller riders, enduro, and downhill
XXL (Double Extra Large)	6'4" - 6'6"	193 - 198	61 - 63	53 - 55	78 - 80	For very tall riders, downhill and aggressive trail

Inseam Measurement:
- Measure your inseam (inside leg length) for a more accurate fit. A common formula for mountain bike standover height is:
  - Frame Size = Inseam (cm) × 0.66.
Type of Riding:
- Your riding style (cross-country, trail, downhill, etc.) can influence your choice. For instance, a cross-country bike may have a longer top tube for better aerodynamics, while a downhill bike might have a shorter reach for stability.
Adjustability:
- Some bikes come with adjustable seat posts or handlebar risers, allowing for minor adjustments after the initial fit.
Test Ride:
- Whenever possible, test ride bikes before purchase to ensure comfort and proper fit.
Manufacturer Differences:
- Different brands may have slight variations in sizing, so always refer to the specific brand's size chart.
Gender-Specific Sizing:
- Some brands offer gender-specific designs, which may also affect sizing and fit.
Geometry:
- Pay attention to the bike’s geometry (angles, lengths) as it affects handling and comfort.

By understanding these sizing details, you can select a mountain bike that fits your body and riding style for the best performance and comfort.