Track every component, see the total instantly, and plan smarter upgrades. The simplest way to build a lighter ride.
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Open a complete bike, swap a component, and see the weight change. Free · No signup needed.
Choose a complete road bike and make it your own.
Browse Road bikesFind a gravel setup and try your next upgrade.
Browse Gravel bikesPick a trail-ready build and compare components.
Browse Mountain bikesThree steps to a lighter bike. No guesswork.
Create a bike profile — pick a name, set the type, and start from scratch or a template.
Choose from 1,200+ verified parts or add your own with real measured weights.
Get an instant total. Swap parts to compare and find the lightest setup for your budget.
See how every swap affects total weight instantly — no refresh, no waiting.
Weighed something yourself? Add it to your build and to the community database.
Get a unique link to your config. Share it on forums, with friends, or embed it.
Create a free account when you want to keep builds in the cloud and access them on any device.
Start with your own parts or a ready-made bike. See how each swap changes the weight.
Free · No signup needed