BestBikeFit4U

Measurements · get started at home

Measurement Guide

Accurate measurements improve fit precision. Required values are enough to start; optional values improve cockpit and stability recommendations.

Start measuringOpen the bike fit tool
Illustrated measuring kit with a book and tape measure

Before You Start

  • Measure barefoot on a hard, flat surface.
  • Take each measurement twice and use the average.
  • Ask someone to help for torso, arm, shoulder, and femur.
  • Use consistent units: centimeters except foot length in millimeters.

From height to foot length

Work step by step

The first two measurements are required. Then add optional measurements for a more complete fit profile.

Required · cm

1. Height

Typical range: 130-210 cm

From head to floor

Tools: Tape measure · Wall · Flat floor

  1. Stand barefoot with heels against a wall and look straight ahead.
  2. Keep your back and hips lightly touching the wall.
  3. Place a book flat on your head, mark the wall, then measure to the floor.

Common mistakes: Measuring while wearing shoes. Tilting your head up or down.

Required · cm

2. Inseam

Typical range: 55-105 cm

From crotch to floor

Tools: Tape measure · Hardcover book · Wall

  1. Stand barefoot with feet shoulder-width apart and back against a wall.
  2. Pull a hardcover book up firmly into the crotch to simulate saddle pressure.
  3. Measure from the top edge of the book straight down to the floor.

Common mistakes: Holding the book loosely. Measuring from the wrong edge of the book.

Optional · cm

3. Torso Length

From shoulder to hip

Tools: Tape measure · Helper (recommended)

  1. Stand naturally in a neutral posture.
  2. Find the top of your hip bone (iliac crest) and shoulder point (acromion).
  3. Measure straight-line distance between those two landmarks.

Common mistakes: Measuring while hunched forward. Using different body sides for start and end landmarks.

Optional · cm

4. Arm Length

From shoulder to wrist

Tools: Tape measure · Helper (recommended)

  1. Relax your shoulders and extend your arm slightly forward.
  2. Measure from shoulder point (acromion) to the wrist crease.
  3. Repeat once and average both attempts.

Common mistakes: Locking the elbow aggressively. Measuring around the curve instead of straight-line distance.

Optional · cm

5. Shoulder Width

Between shoulder points

Tools: Tape measure · Helper

  1. Stand upright with relaxed shoulders.
  2. Measure from one acromion point to the other across your back.
  3. Keep tape level and straight.

Common mistakes: Measuring chest width instead of acromion-to-acromion. Pulling tape too tight around the body.

Optional · cm

6. Femur Length

From hip to knee

Tools: Tape measure · Helper

  1. Stand naturally with knees unlocked.
  2. Locate the hip joint landmark (greater trochanter).
  3. Measure from hip landmark to center of the knee.

Common mistakes: Guessing the hip landmark location. Measuring to kneecap edge instead of knee center.

Optional · mm

7. Foot Length

Typical range: 220-320 mm

From heel to longest toe

Tools: Paper · Pen · Ruler

  1. Stand on a sheet of paper wearing thin socks.
  2. Mark heel and longest toe.
  3. Measure between marks in millimeters.

Common mistakes: Measuring while seated (load is different). Using centimeters when input expects millimeters.

Recheck

When To Re-Measure

  • If two attempts differ by more than 1 cm (or 5 mm for foot length).
  • After major body changes, injury recovery, or flexibility improvements.
  • If recommendations feel inconsistent with your on-bike comfort.

Ready to use your measurements?

Save your profile and start a fit session to get your personalized setup.

Go to ProfileStart Fit Session