Bike tire labels can be confusing because the same wheel may be described by ISO, road, mountain bike, or inch sizing. This converter gives you a quick way to compare common tire labels, ISO bead seat diameter, tire width, and estimated rollout.
Bike Tire Size Converter
Convert common tire labels to ISO size, wheel diameter, and rollout.
How to use this tool
Choose a common tire size or enter the ISO bead seat diameter and tire width from the tire sidewall. Use the result to compare sizes before buying tires, setting up a cycle computer, or checking whether two labels describe the same practical wheel size.
What the result means
The converter is best for sizing and comparison. Always confirm the tire will fit your rim, frame, fork, brakes, and fenders before riding.
Related Icebike tools and guides
- Bike tire size chart
- Bike wheel size guide
- Bike wheel circumference calculator
- Tire clearance checker
This tool is for planning and comparison. Check manufacturer limits, actual bike fit, and real ride conditions before making a safety-critical setup change.
