Two single-question calculators: saddle height and stem length.

Sometimes you only want one number. Two new pages answer one question each, with the same engine that runs inside the full tool:

• Saddle height calculator — inseam and crank length in, a starting range out, corrected for your cranks. Enter your inseam and the "Continue in Bike Fit" button carries it across, so you don't type it twice.
• Stem length calculator — put your current stem, angle and spacers on one side and what you're considering on the other, and see how far your hands move, forward and up. Flipping a stem usually lifts them more than people expect.

Each page explains the number underneath: why saddle height is a range rather than one millimetre, why 10 mm of spacers costs you 3 mm of reach, and when a stem is telling you the frame size is wrong.