How to Tie the Fireman's Chair Knot

Usage

The Fireman's Chair Knot is the improvised rescue seat you build when someone needs to be lowered or hoisted and there's no proper harness on hand. Two adjustable loops, tied into the middle of a rope, one goes around the torso or under the arms and the other around the thighs or under the knees, so the person's weight sits across both loops instead of one.

It starts as a Handcuff Knot: two bight loops overlapped and threaded through each other, the same way you'd begin a Clove Hitch. On its own, that interlock doesn't hold its size well under an uneven pull. What turns it into the Fireman's Chair is the next step: a locking half hitch tied around the base of each loop, snugged up close to where it leaves the center knot. That half hitch is what actually fixes each loop's size before any weight goes on it — without it, you just have a plain Handcuff Knot.

Why Learn the Fireman's Chair Knot?

This is an emergency knot, not a first-choice harness. Every source that documents it frames it the same way: a last resort for lowering or hoisting a person when conventional rescue harnesses and rope-rescue equipment aren't accessible. If you've got a real harness, use it. If you don't, and someone needs to come down or come up right now, this is a way to build one out of nothing but rope.

What makes it worth knowing is that both loops can be sized independently, one for the chest, one for the legs, before you lock either of them down. Once both locking half hitches are set, the loops are very unlikely to come undone on their own. What it isn't is the most secure double-loop knot out there. For a permanent midline anchor point, a Double Alpine Butterfly Loop is the better choice. And it isn't cheap on rope either: two full adjustable loops plus two locking hitches eat a lot more line than a single-loop knot.

Because it's so easily confused with the look-alike Tom Fool's Knot — where the two loops never actually interlock — seeing the finished structure from every side matters. The Knot IQ app from Bear Essentials Outdoors renders the knot in 3D so you can rotate it and confirm the loops genuinely interlock before you ever trust it with a person's weight.

How to Tie the Fireman's Chair Knot

Step 1

Form two loops in the middle of the rope and overlap them as though you were starting a Clove Hitch. No rope ends are needed — this is tied in the bight.

Step 2

Thread each loop through the other loop, interlocking the two.

Step 3

Adjust each loop to the size you need and take up the slack: pull each loop in opposite directions, then pull on both rope ends. Size the torso loop and the leg loop now, before anything is locked.

Step 4

Fix each loop's size by using each rope end to tie a half hitch around the base (neck) of the adjacent loop, snugged close to where it leaves the center knot. This locking step is what makes it a Fireman's Chair rather than a plain Handcuff Knot.

Step 5

Tighten everything to finish, then place the loops around the person — one around the torso or under the arms, the other around the thighs or under the knees.

Common Uses

This is a rescue harness knot, prized for distributing a person's weight across two independently adjustable loops when no proper harness is available.

Firefighting

Search and Rescue (SAR)

Other Names Chair Knot Man O' War Sheepshank Category Firefighting Search and Rescue (SAR)

Variations Handcuff Knot – the same interlocked loops without the two locking half hitches that fix each loop's size.

Notable Features

• Two independently sized loops. Each loop can be adjusted to its own size, chest or legs, before it gets locked in place.
• Locks after sizing, not before. The locking half hitch on each loop is tied once that loop is already the right size, so the two loops don't fight each other while you're setting them up.
• Tied in the bight. No rope ends are needed to start it. You can form it in the middle of a line.
• Spreads the load across two loops. Weight is carried by the torso loop and the leg loop together, rather than one loop doing all the work.

Similar Knots

Handcuff Knot vs. Fireman's Chair Knot

• Advantage: the Handcuff Knot is the faster tie of the two, since it stops before the locking step.
• Disadvantage: without the locking half hitch on each loop, the Handcuff Knot has minimal locking action on its own and isn't the finished, load-bearing form. The Fireman's Chair Knot is what you get once both loops are locked.

Spanish Bowline vs. Fireman's Chair Knot

• Advantage: the Spanish Bowline is also tied in the bight and also gives you two adjustable loops for a seat or a sling, without needing a locking step added afterward.
• Disadvantage: the two knots are built differently and aren't interchangeable step-for-step. Which one a given rescue team trains on is department-specific.

Double Alpine Butterfly Loop vs. Fireman's Chair Knot

• Advantage: the Double Alpine Butterfly Loop is the more secure two-loop choice for a permanent midline anchor point.
• Disadvantage: its loops are fixed for anchoring, not the independently sized, on-the-body adjustable loops the Fireman's Chair Knot gives you for an improvised rescue seat.

Security Level

There's no published breaking-strength or load-test figure for the Fireman's Chair Knot. It sits outside the standard tested-knot canon that knots like the Figure-8 and Bowline belong to. What the record does say: once both locking half hitches are correctly tied and set, the knot is very unlikely to come undone on its own. But that security is entirely conditional on getting both half hitches right. Leave one off, or tie it loose, and you're back to a plain Handcuff Knot with minimal locking action.

For a permanent midline anchor point, sources point to the Double Alpine Butterfly Loop as the more secure choice. The Fireman's Chair Knot's job is different: an adjustable, improvised rescue seat, not a fixed anchor.

Downsides

• No test data behind it: there's no measured breaking strength or load rating for this knot in the record. Treat it as an emergency-only tool, not a certified piece of rescue equipment.
• Uses a lot of rope: two full adjustable loops plus two locking half hitches take a lot more rope than a single-loop knot.
• Everything rides on the locking step: if either locking half hitch is skipped or tied loose, the knot reverts to a plain Handcuff Knot, which has minimal locking action and can shift under an uneven pull.
• Easy to confuse with the Tom Fool's Knot: the Tom Fool's Knot looks similar but is built from a round turn instead of this knot's Clove-Hitch-style interlock. The two loops in a Tom Fool's Knot aren't actually interlocked, which makes it weaker and harder to tighten — tying that one by mistake means you don't have the knot you think you have.
• Not the top choice for direct traction on limbs: using the locked loops to pull a trapped person out by their wrists or ankles is potentially traumatic, and should only be used when no other lifting method is possible.
• Not the most secure double-loop knot: for a permanent midline anchor point, a Double Alpine Butterfly Loop is the better pick.

History

The underlying two-loop, interlocked structure was already well known by 1917, when Verrill's Knots, Splices and Rope Work described it as famous for baffling escape artists of the day. Ashley catalogued the family in his 1944 Book of Knots, noting that it's commonly confused with the Tom Fool's Knot even though the two are built differently. The Fireman's Chair name itself is tied to firefighting history, though the record here doesn't have a fully verified account of exactly when or how that name and use took hold.

FAQ

Is the Fireman's Chair Knot the same as the Handcuff Knot?

Almost, but not quite. The Fireman's Chair Knot is a Handcuff Knot with one extra step: a locking half hitch tied around the base of each loop. That locking step is what fixes each loop's size and makes the knot suitable for carrying a person's weight. Without it, you just have the unlocked Handcuff Knot.

Is the Fireman's Chair Knot strong enough to trust with a person's life?

There's no published breaking-strength or load-test data for this knot, and it isn't part of the standard tested-knot canon that knots like the Bowline belong to. Every source that documents it treats it as an emergency, last-resort harness, to be used only when a real rescue harness isn't available, not as a substitute for proper rescue equipment.

What's the difference between the Fireman's Chair Knot and the Tom Fool's Knot?

They look similar but aren't built the same way. The Fireman's Chair Knot starts like a Clove Hitch, with two loops that actually interlock. The Tom Fool's Knot starts from a round turn, and its two loops aren't interlocked, which makes it weaker and harder to tighten. Tying a Tom Fool's Knot by mistake, thinking it's a Fireman's Chair Knot, is a documented, long-standing mix-up.

How do the two loops go around a person's body?

One loop typically goes around the torso or under the arms, and the other around the thighs or under the knees, so the person's weight is carried across both loops instead of resting on just one.

Important Notes on Safety

This is an emergency knot, meant for when conventional rescue harnesses and methods aren't available — not a first-choice piece of rescue equipment. There is no published breaking-strength or load-test figure for the Fireman's Chair Knot anywhere in the record used for this article, and it falls outside the standard tested-knot canon that knots like the Bowline and Figure-8 belong to. Treat it accordingly.

The knot's entire security depends on both locking half hitches being tied correctly and snugged close to the center knot before any weight is applied. Skip either one, or tie it loose, and the knot reverts to a plain Handcuff Knot with minimal locking action. Watch for the Tom Fool's Knot mix-up too: it looks similar but its loops aren't actually interlocked, so it's weaker and harder to tighten. Using the locked loops for direct traction on a trapped person's limbs is potentially traumatic and should be used only when no other lifting or rescue method can be employed. For a permanent midline anchor point, a Double Alpine Butterfly Loop is the better and more secure choice.