Use the slider control to choose a gear:

Based on your choice of chainrings and sprockets, your gear options are:

Chainring Sprocket Inches Metres
inches for a 27" wheel
metres for a 700x23C wheel
At a steady
rpm cadence:
Speed: km/h

Metres and Inches?

What exactly do these numbers mean? The truth is, it doesn't really matter; and it probably won't match any real-world measurement anyway.

Statements of gear inches typically assume an old-fashioned 27 inch wheel - but modern wheels are made to the metric 700c standard, and calculations don't usually consider tyre size.

Treat it as a relative measure of the power needed to turn the pedals, and the maximum speed you could reach before your legs start to spin out. A 90" gear is easier to pedal than 100", but 100" will be faster - as long as you're able to get on top of it.

Cycling federations impose restrictions on gearing for children, usually as metres travelled in a full revolution of the cranks. Calculators can help, but there's no substitute for a tape measure.

About This Site

Gear selection is an essential part of racing your bike in a velodrome. You need to choose the right gear for your level of fitness, and the demands of the event. Too low a gear, and your legs will 'spin out'. Too high a gear, and you won't be able to get on top of it. Either way, you won't be able to produce your best performance.

There are many gear calculation apps online, but Gearfinder's unique approach aims to answer the most pressing questions for a rider in track centre. What gear will I be on, if I match this chainring with that sprocket? Or for my desired gearing, what options do I have, given the components in my bag?

Click on the gear icon (ho ho), and tell the app what size chainrings and sprockets you have. Then use the tools to find the right combination for your race. Up up up!

Your settings will be remembered for your next visit.

Credits and Policies

Gearfinder is a Tintou production, using third-party code in accordance with the relevant licensing.

Gearfinder is a free service providing information to help you make decisions relating to bicycle gearing. We accept no responsibility for your decisions.

Details of your chosen components and display preferences is stored locally within your browser. No personal data is seen by the site producer.

Gearfinder was inspired by existing calculator tools, offered by Velobike, Bill Ostrie II and others. Thanks also to Velobike for guiding the decision of what range of gears to offer. (Yes, our chainring selector goes up to 100 if you scroll down a bit.)

Some external links on this website are affiliate links, which may generate a small commission at no direct cost to you. We may also place adverts on the page, served by third parties.

This app is optimised for use on mobile phones in portrait mode.

If you are on a mobile phone, please rotate to portrait orientation.

On computer screens, you may need to stretch your browser window.