Gear inches to gain ratio
Type a value in gear in to get it in gain instantly.
5.229gain
That's about the same as a cruising gear. At a steady 90 rpm that rolls about 30.16 km/h.
What it means
How tall is that gear?
Wheel diameters include a typical tire for each size. A fat tire adds an inch or so, which is about 3% on the gear.
The math
How to convert gear in to gain
To convert gear inches to gain ratio, multiply by 0.0747059.
Example: 70 gear in × 0.0747059 = 5.22941 gain.
In the other direction, 1 gain = 13.3858 gear in.
The table below is for 700c road, 25 mm tire (26.3 in).
Every unit
Your gear in every unit
Tables
gear in to gain conversion table
| gear in | gain |
|---|---|
| 20 gear in | 1.49412 gain |
| 30 gear in | 2.24118 gain |
| 40 gear in | 2.98824 gain |
| 50 gear in | 3.73529 gain |
| 60 gear in | 4.48235 gain |
| 70 gear in | 5.22941 gain |
| 80 gear in | 5.97647 gain |
| 90 gear in | 6.72353 gain |
| 100 gear in | 7.47059 gain |
| 110 gear in | 8.21765 gain |
| 130 gear in | 9.71176 gain |
gain to gear in conversion table
| gain | gear in |
|---|---|
| 20 gain | 267.717 gear in |
| 30 gain | 401.575 gear in |
| 40 gain | 535.433 gear in |
| 50 gain | 669.291 gear in |
| 60 gain | 803.15 gear in |
| 70 gain | 937.008 gear in |
| 80 gain | 1,070.87 gear in |
| 90 gain | 1,204.72 gear in |
| 100 gain | 1,338.58 gear in |
| 110 gain | 1,472.44 gear in |
| 130 gain | 1,740.16 gear in |
Quick answers
Quick answers
- How many gain is 1 gear in?
- 1 gear in is 0.0747059 gain.
- How many gain is 10 gear in?
- 10 gear in is 0.747059 gain.
- How many gain is 70 gear in?
- 70 gear in is 5.22941 gain.
The units
About these units
Gear inches (gear in)
The classic measure: the penny-farthing wheel your gear is equivalent to.
Gain ratio (gain)
Wheel radius against crank length: how much the gear multiplies your effort.
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