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BikeTwins
How it works
height setback drop saddle to bar BB 0 / 0 height setback drop saddle to bar A B BB 0 / 0
Your saddle
Your bar, from the saddle
clamp to the hoods; blank means a typical 75 mm bar

I have my numbers

Every report I have seen prints these four. Give me them and I go straight to the sizes. Nothing is named, nothing is owned, nothing saved.
The band
What most reports actually print. I convert them, and the saddle band opens to ±10 mm because the conversion assumes things; the two points tab is the tighter one if you happen to have them.
Setback measured to the rail centre or the saddle nose?

Most reports measure setback and saddle to bar from the saddle nose. The boxes above ask for the middle of the rails. If yours is a nose report, press "Saddle nose" and I move both back 110 mm, a typical saddle's nose to its rails. Your bar stays where the report put it, and the saddle band opens by 15 mm to say so.

Where do I find these?
The two points
Everything on this site is these two points and the bottom bracket. Both measured from the bottom bracket, the middle of where the cranks turn. If your report gives them as coordinates, this is them.
Saddle height
bottom bracket to the top of the saddle, along the seat tube
Saddle setback
behind the cranks, to the middle of the rails
Saddle to bar drop
rail centre down to the middle of the bar clamp
Saddle to bar
horizontal, rail centre to the bar clamp
Your bar reach
The bar's reach is the one box you can leave empty without being asked again: I stand in a typical 75 mm bar, say so on every answer, and the bar band opens from ±3 mm to ±8 mm to cover it. Your own two points do not move; what moves is where the hoods land on a bike wearing a different bar.
The two bands
The two points are the tightest of the two: nothing is assumed, so the band starts at ±3 mm at the bar and ±3 mm at the saddle. The figures on a fit report are what most reports actually print: I convert them, and the saddle band opens to ±10 mm because the conversion assumes things.
Off a fit report
If you have had a fit, every report I have seen prints the four figures on the second tab. Type them in as they are written.
Off the bike you ride
About two minutes: pick it from the list by make, model and size, and I work the position out from the frame and the parts. Start from a bike
With a tape
About twenty minutes with a tape, a plumb line and a level, and afterwards nothing about your own bike is assumed. The guide has the pictures. Come back and type the readings in as you took them, from the floor. How to measure your bike
Nothing saved
I will not invent a stem you never told me about. The numbers travel in the address bar, so you can come back to them or send them to somebody. The offer to keep the numbers comes after the answer, if you want it.