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BMX Gear Calculator

By Shane Jenkins

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Many years ago at we started to develop a gear chart and a gear calculator specifically for BMXers that could be used on the web, so no matter where you were, providing you had an internet connection and a browser, you could access them. Of course over the years they have changed somewhat. Now the calculator produces an interactive gear chart, which sounds very complicated but couldn't be easier to use. Not only that though, the calculator can give you exact roll out for Tioga PowerBlock tires and many other popular tires.

Since we use it a lot ourselves we are very proud of what we have been able to produce and how popular it is.

Every now and then, while at some tracks we found that internet connections on the phone were very slow making the gear calculator a little difficult to use. It's been a long time coming but we finally have our first iPhone/iPad app, the BMX Gear Calculator

- the BMX specific gear calculator that works anywhere, anytime
- no internet connection required
- compare multiple gears in a simple chart on the one screen
- includes:
Tires Listed


PowerBlock 20×1.75
PowerBlock 20×1.60
PowerBlock 20×1.40
PowerBlock 20×1.95
PowerBlock 20×1 3/8
PowerBlock 20×1 1/8
PowerBlock 24×1.40
PowerBlock 24×1.60
PowerBlock 24×1.75
PowerBlock 24×2.1
Comp 3 20×1.75
Comp 3 20×1.50
Comp 3 20×1 3/8
Comp 3 20×1 1/8
Comp 3 24×1.75
Comp 3 25th 20×1.75


Micro Knobby MK2 20×1.75
Micro Knobby MK2 20×1.50
Micro Knobby MK2 20×1 3/8
Micro Knobby MK2 20×1 1/8
Micro Knobby MK2 20×1
Micro Knobby MK2 24×1.75
Micro Knobby MK2 24×1.50
Micro Knobby MK2 24×1 3/8
Micro Knobby MK2 24×1 1/8
Micro Knobby MK2 24×1


DTH 20×1 1/8
DTH 20×1 3/8
DTH 20×1.75
DTH 20×1.5
DTH 24×1.75
Torch 20×1.75
Torch 20×1.5
Holy Roller 20×1.75
Holy Roller 20×1 3/8
Holy Roller 20×1 1/8
Holy Roller 24×1.85


TCS R1 20×1.60
TCS F1 20×1.95
Differential 20×1.75
Graffiti TCS 20×1.85


Konversion 20×1.75
Konversion 20×1.65
Konversion 20×1.50
Konversion 24×1.75
Konversion 24×1.50
Kompact Folding 20×1.75
Kontact Folding 20×1.75


Speedster 20×1 3/8
Speedster 20×1 1/8
Speedster 20×1.50
Speedster 20×1.6
Speedster 20×1.75
MK3 Foldable 20×1
MK3 Foldable 20×1 1/8
MK3 Foldable 20×1 3/8
MK3 Foldable 20×1.50
MK3 Foldable 20×1.75
MK3 Foldable 24×1
MK3 Foldable 24×1 1/8
MK3 Foldable 24×1 3/8
MK3 Foldable 24×1.50
MK3 Foldable 24×1.75
MK3 Foldable 24×1.85


Siren 20×1 1/8
Siren 20×1 3/8
Siren 20×1.50
Siren 20×1.75
Siren 24×1.75


XLR8 Foldable 20×1.50
XLR8 Foldable 20×1.75
XLR8 Foldable 20×1.95
XLR8 20×1 1/8
XLR8 20×1 3/8
XLR8 20×1.50
XLR8 20×1.75
XLR8 20×1.95
XLR8 24×1.75

And if your specific tire is not listed you have two options

Generic sizes

20×1 1/8
20×1 3/8
24×1 1/8
24×1 3/8


Measure up the outer diameter of your rear wheel and work out your rollout

What's New in Version 1.5

- added more brands and tires
- added custom option for tires that are not listed
- added application state restoration
- converted to iOS 7 look
- minor changes


iPhone Screenshot 1
iPad Screenshot 1
iPad Screenshot 2

Customer Reviews

No option to save/load data

Really disappointed. No option to save/load data like the website version has. No point in buying app. Please add this feature to app version. Comes in handy when you have 4 racers in the family. You should have it the other way around, no option to save data for website version and option for paid supporters with app.

BMX Gear Calculator
View in iTunes
This app is designed for both iPhone and iPad
  • $1.99
  • Category: Utilities
  • Updated:
  • Version: 1.5
  • Size: 1.2 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 6.1 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

We have not received enough ratings to display an average for the current version of this application.