How To Tie A Square Knot | Step-By-Step Instructions

Learn how to tie a square knot and add this to your skills! Often called the reef knot, the square knot is one of the most commonly used knots. Thus, following this tutorial can be a lifesaver!

RELATED: Tie It All Together With These 9 Knots

In this article:

  1. The Square Knot
  2. Uses for Square Knots
  3. When Not to Use a Square Knot
  4. Step-by-Step Tutorial

How to Tie a Square Knot | Your Ultimate Guide

The Square Knot

scout series reef knot square army | square knot uses

The square knot is probably one of the best-known knots or at least one of them. It is also sometimes referred to as the reef knot used primarily to join two ropes, cords, or lines of similar thickness.

Square knots are easy to tie and the perfect choice for many things, but there are also times when you should not use them.

We encourage you to learn as much about basic knots as you can, so you can use the right types of knots for the right situations.

Uses for Square Knots

square knot used tie two paracords | square knot bracelet

  • First aid, to tie bandages
  • A common knot used in surgery
  • To tie boot or shoelaces
  • To tie belts and sashes
  • Tying the reefing points of sail when the wind blows up
  • To tie plastic bags and trash bags

RELATED: 40 Essential Knots Every Survivalist Needs To Know

When Not to Use a Square Knot

Square knots are not your best choice when you have two different thicknesses you wish to join. They slip when you tie them with a nylon rope and will also slip if it is not under tension.

Critical Tip:

Square knots can be dangerous if misused and should never be used in critical situations where lives might be at risk. This is simply due to the potential instability of the knot.

Unfortunately, many accidents took place as a result of trying to join two ropes with a square knot.

Step-by-Step Tutorial

square knot illustration | double square knot

Pay close attention to these steps, as a square knot is often tied wrong. You will end up with a “granny knot,” which may slip under a heavy load. See how this type of knot looks like or tied by using two colors of cord.

Step 1: Remember: “Right over left, left over right.”
Step 2: Take one line in your right hand, and one in your left and lay the right over the left.
Step 3: Pass the right end over the and back under the left.
Step 4: Pass the over the right end and back under the right.
Step 5: Check the knot (the two loops should slide on each other).
Step 6: Tighten by pulling both strands on each side of the knot.
Step 7: Backup the square knot by making an overhand knot using the working end of each side of your knot.
Step 8: Backing up a knot is important with a knot like the square knot, otherwise, it can slip.

Watch this video by Helpful DIY for a step-by-step guide on tying a square knot:



Now you know one more type of knot to add to the knots and hitches tricks you can pull off your sleeves for camping and . Remember, while this is a simple and reliable knot, it has its limits, so use it the right way for your own safety.

Have you ever used a square knot in a particular situation before? Tell us in the comments section below!

Up Next: 

  • How To Tie A Fishing Knot
  • Best Knots For Camping And Survival
  • How to Survive an Avalanche | Emergency Preparedness

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’s Note: This article was originally published in September 2019, and has been updated for quality and relevancy.

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