CalculatorsCassette Range Calculator
Cassette Range Calculator
Range is a property of the cassette alone. It says nothing about whether your chainring makes the easiest gear actually easy.
Inputs
Results
- Range
- 309 %
How the number is made
Range % = (largest cog ÷ smallest cog) × 100. A 10–52 is 5.2 × 100 = 520%.
Steps between cogs can still be clumsy inside a wide range.
Related calculators
- Bicycle Gear Ratio Calculator
Puts a chainring in front of this cassette so the low gear is a real ratio.
- Derailleur Capacity Calculator
The cage has to swallow the tooth difference you just measured.
Questions
Is 520% better than 300%?
Only if you need the low gear. A wider range usually means bigger jumps between shifts.
Does a double chainring add range?
Yes, but that is chainring difference plus cassette, which is derailleur capacity — a different calculator.
Is a 10-52 cassette really 520 percent?
Yes. Range percent is the large cog divided by the small cog, times 100. 52 divided by 10 is 520 percent.
Related gear
- Wide-range cassette
Check the freehub body. A 10-tooth cog usually needs XD or XDR.
$50–$450