Overhand Knot
stopper knot
There is no simpler knot than the overhand, and that simplicity is both its use and its limit. It's the first knot most people ever tie without thinking about it - the same twist-and-pull that starts a shoelace bow - and on a rope it does exactly one job well: it makes a lump too big to pass back through a hole, block, or grommet it was just threaded through.
That lump is formed by the tightest possible bend a rope can be forced into, wrapping back on itself almost immediately. Rope engineers have long documented that any knot cuts into a rope's rated strength roughly in proportion to how sharply it forces the fibers to bend, and the overhand's very tight radius is why it typically costs a rope closer to half its strength - more than most other common knots.
Because of that cost, the overhand knot is rarely the right choice wherever strength actually matters. It shows up constantly as a component inside other knots (it's the core move repeated in a reef knot, a surgeon's knot, and several stopper variants), and as a quick, disposable stopper for household cord where losing half the rope's strength is irrelevant - but on a climbing rope's tail or any load-bearing line, the wider-radius figure-eight knot does the same job for noticeably less strength loss.
Its role as a building block is arguably more important than its role as a standalone stopper: the reef (square) knot is essentially two overhand knots tied in opposing directions, the surgeon's knot in fishing doubles the same basic tuck, and several stopper and binding knots begin with an overhand as their foundation before additional wraps are added. Recognizing the plain overhand inside these more complex knots is often what makes learning the rest of them faster, since the hand motion - cross, tuck, pull - repeats constantly across completely different final knots.
How to tie the Overhand Knot
Cross the working end over the standing part to form a small loop.
Strength & security
Approx. strength retained: 45-55%
It is the single most reliable stopper for its simplicity - once pulled tight it does not slip - but it is also the sharpest, tightest bend a rope can be forced into, which is exactly why it costs the rope so much of its strength.
Cautions: Never rely on a single overhand knot as the terminal knot on a life-safety rope end; a figure-eight knot occupies the same role with a gentler bend radius and noticeably better strength retention.
Alternatives
- Figure-Eight Knot
Retains meaningfully more of the rope's strength thanks to a wider bend radius, and is easier to untie after loading - the reason it, not the overhand, is the standard climbing-rope stopper knot.
FAQ
Why is the overhand knot considered weak?
It bends the rope through the sharpest possible radius of any common knot, and rope testing consistently shows tighter bend radii cost more strength - the overhand typically leaves only about half a rope's rated strength intact.
What should I use instead on a climbing rope?
A figure-eight knot does the same stopper job with a gentler bend, retaining noticeably more strength and staying easier to untie after being loaded.
Is the overhand knot used inside other knots?
Constantly - it's the basic building block inside the square knot, the surgeon's knot, and several stopper and binding knots, which is part of why it's usually the very first knot anyone learns.
Does tying an overhand knot in a rope permanently damage it?
A single overhand tied and untied doesn't cause lasting damage to the rope itself, but repeatedly tying and untying a tight overhand knot in the same spot can eventually cause localized wear or glazing in synthetic rope from the friction and sharp bending, which is a real reason to avoid always tying stopper knots in exactly the same section of a working line.
Can an overhand knot be tied in webbing as well as rope?
Yes, though it costs webbing even more relative strength than it costs round rope, since flat webbing bends less predictably around a tight radius - for webbing specifically, a water knot is almost always the better choice wherever strength matters.
Is the overhand knot the same in every culture's rope tradition?
The basic cross-and-tuck motion is essentially universal across cultures and eras, since it's the simplest possible way to form a stopper - what varies is mainly terminology and which secondary knots each tradition builds from it.