Who we are
About BikeRatio
A toolbox for riders who would rather decide by the numbers: what tire pressure to run, what frame size to buy or what gearing to fit for a long climb.
Why it exists
Everyday cycling questions have answers in numbers, but those numbers are scattered across brand calculators, forums and spreadsheets, and they rarely explain where they come from. BikeRatio puts them in one place, with the formula in plain sight.
What you'll find
- My Bike: save your bike once and get its shop sheet.
- Calculators for tire pressure, frame size, saddle height, gearing, chain length, power, training and e-bikes.
- Guides that answer with numbers and open the calculator already set up for you.
- Climbs with their elevation profile and how long they would take you.
- A cycling glossary in six languages, a guide to bike laws and data-driven studies of the bike market.
How we work
Everything is calculated in your browser: there are no accounts and we don't store the details you enter. We explain every formula on its own page and in our methodology. Outside data comes with its source, and if you find a mistake, we fix it.
How the site is funded
Some links to stores are affiliate links: if you buy through them, the store pays us a small commission at no extra cost to you. Down the road there may be ads on content pages, never inside the calculators. No brand pays to be featured or to change a recommendation.
Contact
Have an idea, a question or a number that doesn't add up? Write to us through the contact form.