New Jersey Knife Laws

njNew Jersey knife laws are wordy and oftentimes difficult to understand if one does not have formal legal education or training. This article takes New Jersey code and case law concerning knife ownership and carry and puts it into a language that makes it easy for anyone to understand what is legal and what is not.

What is Legal to Own

  • It is legal to own a Balisong, or butterfly knife
  • It is legal to own disguised knives like lipstick knives
  • It is legal to own a Bowie knife
  • It is legal to won throwing stars and throwing knives
  • Any weapon for which a person has an explainable lawful purpose for owning

What is Illegal to Own

  • It is illegal to own any weapon, with the purpose to use it unlawfully against the person or property of another
  • It is illegal for a person convicted of certain crimes (see below) to own a gravity knife, switchblade, dirk, dagger, stiletto, or other dangerous knife
  • It is illegal for certain mentally ill people to own a gravity knife, switchblade, dirk, dagger, stiletto, or other dangerous knife
  • It is illegal to own a gravity knife, switchblade, dirk, dagger, stiletto, or other dangerous knife with any explainable lawful purpose

A conviction for aggravated assault, arson, burglary, escape, extortion, homicide, kidnapping, robbery, aggravated sexual assault, sexual assault, bias intimidation, possession of a prohibited weapon, possession of weapon for an unlawful purpose, manufacture or transport of a prohibited weapon, unlawful possession or sale of a controlled dangerous substance, or endangering the welfare of a child prevents a person from owning certain types of knives in New Jersey.

Definition of Weapon

The New Jersey legislature has defined weapon as anything “readily capable of lethal use or of inflicting serious bodily injury”. It further states that the term includes gravity knives, switchblade knives, daggers, dirks, stilettos, or other “dangerous” knives. In 1982, in State v. Brown, the New Jersey Appellate Court found that a person does not need to intend to use a knife as a weapon in order for it to be considered a dangerous knife, and therefore a weapon. This decision can make it difficult for a person to determine if a particular knife is legal to own, as it could be considered a dangerous knife, even if the owner has no intention of using it to harm another. However, because New Jersey law allows for the possession of a dangerous knife, by those who have a legal purpose for owning them, any knife may be considered legal if owned for a “lawful purpose”.

Definition of Lawful Purpose

The phrase “lawful purpose” was challenged in State v. Blaine, when Mr. Blaine was discovered carrying a folding knife with a 4 inch blade. The Court reasoned that because the knife carried by Mr. Blaine was not a gravity knife, switchblade knife, dagger, dirk or stiletto, those knives specifically mentioned by new Jersey statute as weapons, the defendant may escape a guilty finding, if the state cannot prove that he carried the knife for an unlawful purpose. As such, because there was no proof that Mr. Blaine did not carry the knife for a lawful purpose, he could not be found guilty of carrying an illegal weapon. The Blaine Court cited State v. Lee, in which the legislature’s intent, when enacting the law prohibiting the carrying of certain knives, was examined. In Lee, the Court described this intent as addressing:

…the situation in which someone who has not yet formed an intent to use an object as a weapon possesses it under circumstances in which it is likely to be so used. The obvious intent of the Legislature was to address a serious societal problem, the threat of harm to others from the possession of objects that can be used as weapons under circumstances not manifestly appropriate for such lawful uses as those objects may have. Some objects that may be used as weapons also have more innocent purposes. For example, a machete can be a lethal weapon or a useful device for deep sea fishing.

In 2000, the New Jersey Supreme Court further clarified “lawful purpose” in State v. Burford, by describing two categories of deadly weapons as well as a third category of weapons, that it said may take on the characteristics of a deadly weapon, but that may also have a wide variety of lawful uses. The Court said that when determining whether a defendant possessing a weapon that falls within this third class of weapons is guilty of the unlawful possession of a deadly weapon, one must look at the circumstances under which it is possessed.

Exceptions to Unlawful Possession of a Knife

A person may not be convicted of the unlawful possession of a knife if he or she is carrying the knife for hunting or fishing purposes, the knife is legal and appropriate for hunting or fishing, and the person has a valid hunting or fishing license. A person is also exempt from the unlawful possession statue if he or she is transporting a legal knife to or from a place for the purpose of hunting or fishing, so long as he or she has a valid hunting or fishing license. When carrying a knife for such purposes, the statute requires that it be locked in a box or the trunk of the vehicle in which it is being transported.

Restrictions on Carry

New Jersey statute does not impose any restrictions on the carrying of any legal knife. However, if a defendant is found carrying a gravity knife, switchblade knife, dagger, dirk, or stiletto (those knives specifically mentioned by New Jersey statute as a weapon), he or she may be charged with possession of a dangerous weapon, if there are circumstances which may lead one to believe that the knife is being possessed for an illegal purpose.

Definitions of Various Types of Knives

New Jersey code, 2C:39-1 defines a gravity knife as any knife that has a blade, which is released from the handle by the force of gravity or the application of centrifugal force (spinning the knife around). It also provides a definition for the term switchblade knife, which means any knife or instrument that has a blade, which opens automatically by pressing a button, spring, or other device on the handle. A ballistic knife, according the New Jersey statute is a weapon or other instrument capable of lethal use and which can propel a knife blade.

Knives Found in Vehicles

New Jersey code 2C:39-2, provides that when a weapon is found in a vehicle, it will be presumed to be in the possession of all of the occupants of the vehicle unless:

1. It is found on the person of one of the occupants, then it will be considered to be in his or her possession, OR

2. The weapon is out of view of the occupants (such as in the glove box), then it will be presumed to be in the possession of the person having access to such space, (the driver, owner, or person who rented or leased the vehicle), OR

3. The vehicle is a cab and the weapon is found in the passenger compartment, in which case it will be presumed to be in possession of all of the passengers and if there are no passengers, it will be presumed to be in possession of the driver of the cab.

Conclusion on New Jersey Knife Law

While persons who have been convicted of certain crimes or who are mentally ill may not possess dirks, daggers, switchblades, stilettos, or gravity knives, anyone else may own any type of knife they wish, as long as they have a lawful purpose for owning it, and do not intend to use it to harm another or his or her property.

New Jersey knife carry laws are quite unrestrictive, allowing for the open or concealed carry of any legal knife.

The laws in New Jersey are very vague about when it is legal to possess or carry a dirk, dagger, switchblade, stiletto, or gravity knife, and anyone carrying any of these knives in New Jersey should be very careful to avoid any circumstances, which may indicate that he or she is not carrying the knife for a legal purpose.


  • N.J. Stat. § 2C:39-1 (2013)
  • N.J. Stat. § 2C:39-2 (2013)
  • N.J. Stat. § 2C:39-4 (2013)
  • N.J. Stat. § 2C:39-5 (2013)
  • N.J. Stat. § 2C:39-6 (2013)
  • N.J. Stat. § 2C:39-7 (2013)
  • State v. Brown, 185 N.J. Super. 449 A.2d 1314 (App.Div. 1982)
  • State v. Blaine, 533 A.2d 980 (1987 N.J. Super.)
  • State v. Burford, 746 A.2d 998 (2000 N.J. Super.)
  • Daniel Halkard

    Would a 3″ folding knife be illegal if used for self protection ??

  • Dee Cee

    Necro post: Any knife used for “self defense” or “self protection” would qualify as illegal if the defender acted with “excessive force”. There are different scenarios: If somebody comes at you with a baseball bat intending to inflict injuries upon your person, a bat may or may not be considered a lethal weapon. Say that you whip out your knife to deter the altercation, but the altercation happens anyway and your attacker ends up seriously injured. Depending on the presiding judge, he may rule in favor of the knife weilding defendant that “he or she felt that his or her life was being threatened, and responded with equal if not adequate force”.

    Scenario 2: Let’s say the altercation doesn’t happen because you whipped out your knife. Chances are that the reporting officers/witnesses would focus on the fact that you presented/weilded a menacing and ‘deadly weapon’, because the attacker’s bat did not pose any “lethal threat”.

    Scenario 3: Regardless of how much stronger and larger your assailant is in comparison to you, he/she attacks you WITHOUT a weapon. You take out your knife to ‘even the odds’. They end up with serious injuries because you felt that the assailant meant to inflict lethal injuries upon you.
    3a) Judge rules in your favor because you were protecting young children/women
    3b) More likely the judge rules against you for aggravated assault with a deadly weapon, because you did not respond with “equal opposing force”. I.e., that means fisticuffs with someone who could be 2x as strong as you.

    Scenario 4: You fend the guy off with the knife, but decide to go after him to “keep him from hurting anyone else”. This is a clear cut case of assault with a deadly weapon; your assailant had ‘clearly’ surrendered the fight, but you chased after him with a deadly weapon.

    Scenario 5: You do NOT pull the knife, you get killed.

    **Even though there may be the off chance that you will need to respond with equally lethal force, the BEST option is usually to GTFO and run away. Having or using knives does not make a man; the discernment and acceptence of possible consequences does.

    A judge will always try to make a point of whether or not you tried your best to exit a potentially hostile situation before resorting to “self defense”.

    Carry Wisely, Carry Safely!

  • Kevin

    What are the laws about having knives mailed to you?

  • D.f.

    Yes because self defense could be seen as intent to use on another person. But it is legal to carry for your job. Its all about intent

  • Ian

    is it illegal to own a Karambit or a Huntsman

  • patrick

    what are the laws on the size of the blade, like for a machete. is there a limit on the size of the blade and/or knife

  • Amy Neidlinger

    What are the laws on the size of the blade?

  • Genen

    Does a samurai sword won as a trophy need to be secured in a home to avoid accidental injury to visitors to the home?