Measure a horse bit correctly is essential for ensuring that the bit fits comfortably and securely in the horse’s mouth. A bit that is too small can pinch the horse’s lips and tongue, while a bit that is too large can give the horse too much play, making it difficult for the rider to control.

There are two main measurements that you need to take when measuring a horse bit:

  • Mouthpiece length: This is the distance from the inside of the one-bit ring to the inside of the other-bit ring.
  • Mouthpiece thickness: This is the thickness of the mouthpiece at its widest point.

Material needed:

  • A soft tape measure
  • A pencil and a paper

Gather your tools

  • Measure the mouthpiece length: To measure the mouthpiece length, place the bit on a flat surface and pull the rings apart so that the bit is at its maximum length. Use a ruler to measure the distance between the inside of the bit rings.

Measure the mouthpiece length

  • Measure the mouthpiece thickness: To measure the mouthpiece thickness, use a ruler to measure the thickness of the mouthpiece at its widest point. This is usually located near the cheekpiece.


measure the mouthpiece thicknes

  • Record Measurement: write both measurement on paper to get a right bit size..

record measurement to measure for a horse bit

Once you have taken both measurements, you can use a bit size chart to choose the right size bit for your horse. Bit size charts typically list the mouthpiece length and mouthpiece thickness for each size bit.

Horse Bit Size Chart

Horse Size (Hands) Bit Size (Inches) Bit Size (Centimeters) Bit Type/Style
14 – 14.2 4.5 – 5.0 11.4 – 12.7 Snaffle, Kimberwicke, Full Cheek
14.2 – 15.2 5.0 – 5.5 12.7 – 14.0 Snaffle, Kimberwicke, D-Ring
15.2 – 16.2 5.5 – 6.0 14.0 – 15.2 Snaffle, Pelham, D-Ring, Full Cheek
16.2 and above 6.0 and above 15.2 and above Snaffle, Pelham, Weymouth, Baucher
Pony 4.0 – 4.5 10.2 – 11.4 Pony Snaffle, Pony Pelham

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  • how to tell if a bit fits a horse

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Here are some FAQs

Why is it important to measure a horse bit correctly?

It is essential to measure a horse bit correctly to ensure that the bit fits comfortably and securely in the horse’s mouth. A bit that is too small can pinch the horse’s lips and tongue, while a bit that is too large can give the horse too much play, making it difficult for the rider to control.

What are some additional tips for measuring a horse bit?

Here are some additional tips for measuring a horse bit:

  • Make sure that the horse is standing up straight and relaxed.
  • If you are measuring the bit by yourself, it may be helpful to have a friend to help you hold the horse’s head.
  • Be careful not to overtighten the bit rings.
  • If you need clarification on any of the measurements, consult with a bit fitter.

How does a bit fit my horse correctly?

A bit fits properly if it sits comfortably in the horse’s mouth without pinching or rubbing. The bit should also be wide enough to prevent the horse from biting its tongue.

Here are some signs that a bit may not fit properly:

  • The horse is trying to rub its face or shake its head.
  • The horse is drooling excessively.
  • The horse is foaming at the mouth.
  • The horse is trying to bite the bit.
  • The horse is resisting communication from the rider.

If you notice any of these signs, it is essential to consult with a bit fitter to have the bit adjusted or replaced.

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