How to Measure Gullet Size on a Horse in 5 Simple Steps

Measuring a horse's gullet size ensures a well-fitting saddle. Use a flexible measuring tape or gullet gauge to determine the width between the withers' highest point and the saddle's channel. Accurate measurement prevents pressure points, discomfort, or poor performance. Ideal for English or Western saddles.

Why Gullet Size Matters

  • Comfort: Prevents pinching or rubbing on the withers.
  • Performance: Allows free shoulder movement and proper saddle balance.
  • Health: Reduces risk of muscle atrophy or soreness.
  • Saddle Fit: Ensures even weight distribution across the back.

Tools You'll Need

  • Flexible measuring tape (or string + rigid ruler)
  • Gullet gauge (optional but precise)
  • Notepad to record measurements
  • Assistant (recommended for accuracy)

Step-by-Step Measurement Guide

  1. Locate the Withers: Stand beside the horse and identify the highest point of the withers (where the neck meets the back).
  2. Position the Tape: Place the tape horizontally across the withers, 2-3 fingers' width behind the shoulder blade.
  3. Measure the Width: Stretch the tape to the opposite side, keeping it level. Record the distance in inches or centimeters.
  4. Check Clearance: Ensure 2-3 fingers fit vertically between the tape and the horse's skin for saddle clearance.
  5. Compare to Saddle Charts: Match your measurement to standard gullet sizes (e.g., narrow, medium, wide).

Common Mistakes to Avoid

  • Measuring Too Far Back: Always measure right behind the shoulder blade.
  • Ignoring Clearance: A snug fit isn't enough-allow space for movement.
  • Using a Rigid Ruler: Flexible tools conform to the horse's shape for accuracy.
  • Skipping Rechecks: Gullet size can change with muscle development or weight fluctuations.

Gullet Size Comparison: Measurement Methods

Method Tools Required Accuracy Time Needed Best For
Flexible Tape Measuring tape, assistant High 2-5 minutes Quick at-home checks
Gullet Gauge Professional gauge tool Very High 1-3 minutes Precision fitting (e.g., custom saddles)
String + Ruler String, rigid ruler Moderate 5-10 minutes DIY without specialized tools

Standard Gullet Size Ranges

  • Narrow: 5.5-6 inches (14-15 cm) | Common in Thoroughbreds or Arabs.
  • Medium: 6-6.5 inches (15-16.5 cm) | Fits most warmbloods or quarter horses.
  • Wide: 6.5-7+ inches (16.5-18 cm) | Suitable for draft breeds or broad-backed horses.
  • Extra Wide: 7+ inches (18+ cm) | Rare; used for heavily muscled or wide-withered horses.

When to Remeasure

  • After significant weight loss/gain.
  • Every 6-12 months for growing young horses.
  • If the saddle shifts or causes discomfort.
  • Following a change in exercise routine (e.g., increased muscle build).

Signs of an Ill-Fitting Gullet

  • Behavioral: Tail swishing, ear pinning, or resistance under saddle.
  • Physical: White hairs, rub marks, or sweat patterns on the withers.
  • Performance: Uneven gait, reluctance to move forward, or bucking.
  • Saddle: Uneven wear on the panel or bridging (front/rear contact only).