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~ Gear Ratio Calculator ~
This calculator will work out the speed give or take a bit for each rev range. Sorry but Bike engines not included yet.
Enter Tyre size, Diff & Gear Ratios below.
Tyre Size:
Width (mm)
145
155
165
175
185
195
205
215
225
235
245
255
265
275
285
295
305
315
325
Profile (%)
30
35
40
45
50
55
60
65
70
75
80
85
Diam (in)
12
13
14
15
16
17
18
19
20
21
Diff Ratio
Display in:
Mph
Kph
Gear Ratios:
1st Gear
2nd Gear
3rd Gear
4th Gear
5th Gear
Gears/RPM
1st
2nd
3rd
4th
5th
1000 Rpm
1500 Rpm
2000 Rpm
2500 Rpm
3000 Rpm
3500 Rpm
4000 Rpm
4500 Rpm
5000 Rpm
5500 Rpm
6000 Rpm
6500 Rpm
7000 Rpm
7500 Rpm
8000 Rpm
Even though I have taken time to ensure accuracy,
this calculator is for guidance only and I take no responsibility for any in-accuracy.
