A felony conviction does not, by itself, bar you from carrying a knife in California, so the answer to whether a felon can carry a knife in California is usually yes — with real limits. Penal Code 29800 bars felons from possessing firearms, but the statute says firearms, not knives, and California has no parallel felon-specific knife ban.1California Legislative Information. California Code Penal Code 29800 – Person Convicted of Specified Offense, Addicted to Narcotic, or Subject to Court Order What restricts you instead is a mix of rules that apply to everyone (banned knife types, concealment rules, location bans), the intent-based deadly weapon statute, and — the big one for most people with a record — the terms of your parole or probation.
Knives You Can Legally Carry
Folding knives and pocket knives are legal to carry in California, with no blade-length limit, and they can ride concealed in your pocket as long as the blade is folded. That covers standard folding knives, Swiss army knives, box cutters, and utility knives.
The reason sits in Penal Code 16470, which defines a “dirk or dagger” as a knife capable of ready use as a stabbing weapon and specifically excludes a nonlocking folding knife or pocketknife unless the blade is exposed and locked into position.2California Legislative Information. California Code PEN 16470 – Dirk or Dagger Definition A closed folder in your pocket is not a concealed dirk.
Fixed-blade knives are legal too, but they must be carried openly. Penal Code 20200 says a knife carried in a sheath worn openly and suspended from the waist is not considered concealed.3California Legislative Information. California Code PEN 20200 – Knives and Similar Weapons A hunting knife in a visible belt sheath is fine. Tuck the same knife inside your jacket and you’ve committed a crime.
Assisted-opening knives, which many people confuse with switchblades, are also legal. If a knife has a detent or bias that resists opening and you have to push the blade with your thumb or a thumb stud, Penal Code 17235 places it outside the switchblade definition.4California Legislative Information. California Code Penal Code 17235 – Switchblade Knife
Knives No One Can Carry
Certain knives are illegal to possess regardless of your record. A felony history doesn’t add a separate charge here, but it usually means more scrutiny at the traffic stop and a harder charging decision at the DA’s office.
Switchblades with a blade two inches or longer are prohibited under Penal Code 21510, which covers any knife that opens automatically by button, handle pressure, wrist flick, or gravity.5California Legislative Information. California Code Penal Code 21510 – Switchblade Knives4California Legislative Information. California Code Penal Code 17235 – Switchblade Knife
Ballistic knives, which launch the blade as a projectile, are banned under Penal Code 21110 as a wobbler that carries up to a year in county jail or 16 months, two, or three years under realignment.6California Legislative Information. California Code Penal Code 21110 – Ballistic Knife
Disguised knives are listed under Penal Code 16590 as generally prohibited weapons: air gauge knives, belt buckle knives, cane swords, lipstick case knives, writing pen knives, and shobi-zue (a staff with a hidden blade).7California Legislative Information. California Code PEN 16590 – Generally Prohibited Weapons If the knife is built to hide the fact that it’s a knife, it’s banned.
The Concealment Rule and Why Felons Feel It More
Carrying a concealed dirk or dagger is a wobbler under Penal Code 21310. As a misdemeanor it’s up to a year in county jail; as a felony it’s 16 months, two years, or three years.8California Legislative Information. California Code Penal Code 21310 – Carrying Concealed Dirk or Dagger
The definition catches a lot: any knife or instrument capable of ready use as a stabbing weapon that could inflict great bodily injury or death. That includes most fixed-blade knives and locking folders when the blade is locked open. Your two escapes are the ones already covered — a folder with the blade closed, and a fixed blade in an openly worn belt sheath.2California Legislative Information. California Code PEN 16470 – Dirk or Dagger Definition3California Legislative Information. California Code PEN 20200 – Knives and Similar Weapons
This is the point where a felony record changes the math. Prosecutors deciding whether to file a wobbler as a misdemeanor or a felony look at criminal history. Someone with no record caught with a concealed fixed-blade is likely to see a misdemeanor. Someone with a prior felony is more likely to see the felony charge.
Where You Cannot Bring a Knife at All
Some knives that are legal on the street become crimes in specific places.
On K-12 school grounds and college campuses, Penal Code 626.10 prohibits any dirk, dagger, knife with a blade longer than two and a half inches, or folding knife with a locking blade. It’s a wobbler carrying up to a year in county jail or up to three years under realignment.9California Legislative Information. California Code Penal Code 626.10 – Weapons on School Grounds Note what that includes: a locking folder that’s perfectly legal outside becomes a crime at the school gate.
In state and local public buildings and at public meetings, Penal Code 171b bans knives with fixed blades — or blades capable of being fixed in an unguarded position — longer than four inches, punishable by up to a year in county jail or state prison.10California Legislative Information. California Code PEN 171b – Weapons in Public Buildings
At airports, federal TSA rules bar all knives from carry-on luggage regardless of type or length. Multi-tools with blades get pulled constantly at checkpoints. Knives can go in checked luggage.
When a Legal Knife Becomes a Weapon
Penal Code 17500 makes it a misdemeanor to carry any deadly weapon with intent to assault someone.11California Legislative Information. California Code Penal Code 17500 – Possession of Deadly Weapon With Intent to Assault A butter knife isn’t a deadly weapon; a kitchen knife, a large folder, or a hunting knife can be, depending on the circumstances.
The California Supreme Court in People v. Grubb (1965) held that an otherwise innocent object becomes a prohibited weapon when the evidence shows the person intended to use it as one.12FindLaw. People v. Grubb Courts look at the totality of circumstances: where you were, what you said, how the knife was carried, whether it was altered, and what you were doing at the time.
For someone with a felony record, that context test bites hard. Carrying a chef’s knife to a cooking class reads one way. The same knife at 2 a.m. outside a bar reads another. The knife is identical; the context isn’t. If the underlying felony involved violence, prosecutors are more inclined to argue the circumstances point toward weapon possession rather than an innocent errand.
Parole and Probation: The Two-Inch Rule
This is where most felons actually get caught, and it has nothing to do with the general Penal Code.
Under Title 15, Section 2512 of the California Code of Regulations, parolees may not possess any knife with a blade longer than two inches. The only exceptions are kitchen knives, which must stay in your residence, and knives required by your employment, which you may carry only while working.13New York Codes, Rules and Regulations. California Code of Regulations Title 15 Section 2512 – General Conditions of Parole The ordinary folding knife that’s perfectly legal for anyone else can send you back to prison if you’re on parole.
Probation is often just as tight and sometimes tighter, because a judge has broad discretion to attach conditions reasonably related to the offense. If your conviction involved a weapon or violence, expect probation terms that include a weapons ban covering knives. A violation triggers a hearing where the judge can revoke probation and impose the suspended sentence.
So if you’re under supervision, the general knife laws are effectively irrelevant to you. Your conditions are what govern day to day, and they are almost certainly stricter than what the Penal Code allows the general public.
After Supervision Ends
Once parole or probation is complete, the two-inch cap comes off and you’re back to the same rules as everyone else: carry folding knives freely, carry fixed blades openly in a belt sheath, avoid banned categories, and stay out of restricted locations.
Expungement under Penal Code 1203.4 lets someone who has completed probation withdraw the plea and have the case dismissed, but the statute is explicit that dismissal “does not permit a person to own, possess, or have custody or control of a firearm.”14California Legislative Information. California Code PEN 1203.4 – Dismissal of Charges After Probation For knives, that limitation doesn’t matter much: since California has no felon-specific knife ban to begin with, there’s no knife restriction for expungement to lift. The real change is the end of supervision itself.
One caution worth carrying with you: prior convictions still show up in the record a prosecutor sees. A wobbler knife charge — concealed dirk or dagger, ballistic knife, school-grounds knife, assault with a deadly weapon under Penal Code 245 — can be filed as a felony, and a prior record makes the felony filing more likely.15California Legislative Information. California Code PEN 245 – Assault With a Deadly Weapon The safest posture is the boring one: closed folder in the pocket, fixed blade openly sheathed, nothing exotic, and nowhere it isn’t allowed.