Giant Bike Size Chart
Giant was founded in 1972 in Taichung, Taiwan. It sells road, mountain, hybrid, gravel, and e-bikes under Giant and the Liv women’s brand. Size labels differ across those families. This page has Giant’s brand-level charts for the mapped categories. A TCR compact size is not a Reign M. Match the table to the bike, then check stack and reach. A longer Giant size guide with family-level charts also lives on this site.
Official website →Size charts by bike type
Pick the category that matches the bike, then confirm the exact model.
Giant Road Bike Size Chart
| Size | Height | Inseam |
|---|---|---|
| XS | 155-165 cm | 70-75 cm |
| S | 163-173 cm | 74-79 cm |
| M | 171-180 cm | 78-83 cm |
| M/L | 178-186 cm | 82-87 cm |
| L | 184-192 cm | 86-91 cm |
| XL | 190-200 cm | 90-96 cm |
Size
XS
Height
155-165 cm
Inseam: 70-75 cm
Size
S
Height
163-173 cm
Inseam: 74-79 cm
Size
M
Height
171-180 cm
Inseam: 78-83 cm
Size
M/L
Height
178-186 cm
Inseam: 82-87 cm
Size
L
Height
184-192 cm
Inseam: 86-91 cm
Size
XL
Height
190-200 cm
Inseam: 90-96 cm
Giant Mountain Bike Size Chart
| Size | Height | Inseam |
|---|---|---|
| XS | 150-160 cm | 66-72 cm |
| S | 158-170 cm | 70-77 cm |
| M | 168-178 cm | 76-82 cm |
| L | 176-188 cm | 81-87 cm |
| XL | 186-198 cm | 86-93 cm |
Size
XS
Height
150-160 cm
Inseam: 66-72 cm
Size
S
Height
158-170 cm
Inseam: 70-77 cm
Size
M
Height
168-178 cm
Inseam: 76-82 cm
Size
L
Height
176-188 cm
Inseam: 81-87 cm
Size
XL
Height
186-198 cm
Inseam: 86-93 cm
Giant Hybrid Bike Size Chart
| Size | Height | Inseam |
|---|---|---|
| XS | 150-160 cm | 66-72 cm |
| S | 158-168 cm | 70-76 cm |
| M | 166-176 cm | 75-81 cm |
| L | 174-186 cm | 80-86 cm |
| XL | 184-198 cm | 85-93 cm |
Size
XS
Height
150-160 cm
Inseam: 66-72 cm
Size
S
Height
158-168 cm
Inseam: 70-76 cm
Size
M
Height
166-176 cm
Inseam: 75-81 cm
Size
L
Height
174-186 cm
Inseam: 80-86 cm
Size
XL
Height
184-198 cm
Inseam: 85-93 cm
Giant Gravel Bike Size Chart
| Size | Height | Inseam |
|---|---|---|
| XS | 155-165 cm | 70-75 cm |
| S | 163-173 cm | 74-79 cm |
| M | 171-180 cm | 78-83 cm |
| M/L | 178-186 cm | 82-87 cm |
| L | 184-196 cm | 86-92 cm |
Size
XS
Height
155-165 cm
Inseam: 70-75 cm
Size
S
Height
163-173 cm
Inseam: 74-79 cm
Size
M
Height
171-180 cm
Inseam: 78-83 cm
Size
M/L
Height
178-186 cm
Inseam: 82-87 cm
Size
L
Height
184-196 cm
Inseam: 86-92 cm
Model geometry (stack and reach)
After the height chart names a size, compare cockpit height (stack) and length (reach) across this brand's models. Values are typically size M.
Road
| Model | Year | Stack | Reach |
|---|---|---|---|
| TCR Advanced | 2024 | 532mm | 390mm |
| Defy Advanced | 2024 | 575mm | 375mm |
Model
TCR Advanced
Year
2024
Stack: 532mm · Reach: 390mm
Model
Defy Advanced
Year
2024
Stack: 575mm · Reach: 375mm
Gravel
| Model | Year | Stack | Reach |
|---|---|---|---|
| Revolt Advanced | 2024 | 580mm | 378mm |
Model
Revolt Advanced
Year
2024
Stack: 580mm · Reach: 378mm
Mountain
| Model | Year | Stack | Reach |
|---|---|---|---|
| Trance X | 2024 | 615mm | 455mm |
Model
Trance X
Year
2024
Stack: 615mm · Reach: 455mm
How to measure
Height filters the chart. Cycling inseam decides which overlapping size to keep. The method is the same for every brand.
Height
Inseam
- Height: Take shoes off and stand tall, looking straight ahead. A helper should rest a flat object on the crown of your head, then run a tape from the floor to the underside of that object. Save the number in inches and centimeters — charts use both.
- Inseam: Ignore the tag inside your pants. Bike inseam is floor-to-crotch in a riding stance. Straddle a broomstick or dowel, lift it into the groin until it sits firmly, and measure the stick's height from the floor. A second person makes this less awkward.
Need the full sequence, including between-size rules? See how to choose a bike size.
FAQ
What Giant bike size do I need?
Use your height on the Road, Mountain, Hybrid and Gravel charts on this page. On the road table, 163-165 cm sits in both XS and S. Cycling inseam and standover pick the side. Then check stack and reach for the exact Giant model.
Can I copy a Giant size from one bike type to another?
Not safely. Giant Road, Mountain, Hybrid and Gravel charts on this page are separate. A Giant XS on the road table and a Giant XS on the mountain table are not interchangeable.
Which Giant sizes are listed on this page?
The Road, Mountain, Hybrid and Gravel charts on this page include XS, S, M (155-200 cm on the road table). Verify the current Giant model chart on the official site before purchase.
Sources
Where these charts come from
Brand-level ranges on this page are compiled from published size data. Confirm the current model chart before you buy.
Related charts
General chart, matching types, and the calculator
Bike size chart
General height and inseam ranges before you lock a brand label.
Giant size chart (detailed)
A longer Giant size guide with family-level charts on this site.
Road bike size chart
Compare Giant road sizing against common frame-size ranges.
Mountain bike size chart
Compare Giant MTB sizing against trail and hardtail fit ranges.
Hybrid bike size chart
Compare Giant hybrid sizing against commuter and fitness bike ranges.
Gravel bike size chart
Compare Giant gravel sizing against general gravel fit ranges.
All brand size charts
Compare this brand with other bike brand size charts.
How to choose a bike size
Measure height and cycling inseam, then confirm standover and reach.
Bike size calculator
Narrow a Giant starting size with height, inseam, and bike type.