Knife Laws by State (2026): What You Can Legally Carry
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Knife laws in the United States vary dramatically from state to state. This guide covers open carry, concealed carry, blade length limits, and restricted knife types for all 50 states and Washington D.C., updated June 2026.
Legal disclaimer: This page is for general informational purposes only and does not constitute legal advice. Knife laws change, local ordinances vary, and this guide cannot cover every jurisdiction's specific rules. When in doubt, consult a licensed attorney in your state before carrying.
Knife laws in the United States are set almost entirely at the state and local level. What is perfectly legal to carry in Arizona or Texas can result in a criminal charge in New Jersey or Massachusetts. Whether you carry a folding knife every day, own fixed blades for hunting and camping, or just picked up your first traditional pocket knife, knowing your state's rules before you carry is essential.
This guide covers all 50 states plus Washington D.C. with the key facts on open carry, concealed carry, blade length limits, restricted knife types, and whether local ordinances can add further restrictions beyond state law.
How to Read This Guide
Each state entry covers four things:
- Open carry: whether you can carry a knife visibly on your person
- Concealed carry: whether you can carry a knife hidden on your person
- Blade length limit: any statewide limit on blade length for carry purposes
- Restricted types: specific knife types that are banned or restricted statewide
The preemption column tells you whether state law prevents cities and counties from adding stricter rules. In states without preemption (California, New York, and Florida, for example), local ordinances can be significantly more restrictive than the state standard. Always check your city rules too if your state lacks preemption.
Quick rule of thumb: If you carry a standard folding knife with a blade under 3 inches, you are legal in the vast majority of U.S. states. The edge cases involve fixed blades, assisted-opening knives, switchblades, and longer blades in certain restrictive states.
Knife Laws by State: Full Reference Table
Most Restrictive States
If you live in or are traveling through any of these states, the rules are complex enough to warrant extra research before you carry.
- California: No statewide preemption. Concealed carry of dirks and daggers is a criminal offense. Switchblades with blades 2 inches or longer are restricted. Balisongs are treated as switchblades in many contexts. Local ordinances in cities like Los Angeles can add further restrictions.
- New York: No statewide preemption and aggressive local enforcement, particularly in New York City. Switchblades and ballistic knives are banned. Both open carry and concealed carry face restrictions.
- New Jersey: Carry of many knives can be prosecuted without an "explainable lawful purpose." Switchblades, gravity knives, and ballistic knives are restricted. One of the highest-risk states for knife carriers.
- Massachusetts: Ballistic knives are banned. Disguised knives are restricted. A 2024 Supreme Judicial Court ruling struck down the prior switchblade restriction. Verify current statute before carrying any automatic knife. Assisted-opening knives remain legally complex here.
- Washington D.C.: 3-inch blade length limit. Both open and concealed carry are restricted. Switchblades and ballistic knives banned outright.
- Hawaii: Both open and concealed carry face restrictions. Switchblades, balisongs, and disguised knives are all restricted.
Most Permissive States
These states offer the broadest legal environment for knife carry. Most have statewide preemption, no general blade length limits, and permit all common knife types for open and concealed carry.
- Arizona: Statewide preemption, no blade length limit, open and concealed carry both legal. All common knife types including assisted-opening knives and fixed blades are legal to carry.
- Kansas: Statewide preemption, no restrictions on carry type or blade length, all common knife types legal.
- Texas: Statewide preemption. Open and concealed carry both legal. Blades over 5.5 inches face location-based restrictions at schools, churches, polling places, and certain other venues, but everyday lockback knives and linerlocks are fully legal.
- Tennessee and Wisconsin: Both states extend concealed carry permits to cover knives as well as firearms, making them two of only a few states to do so.
- Montana, Wyoming, Idaho, Utah: Statewide preemption, no blade limits, all common types legal. Strong choices for outdoor and hunting carry.
Knife Types That Come Up Most in State Laws
When reading knife laws, certain categories appear again and again. Here is what each one means and how laws typically treat them.
Switchblades and automatic knives
A switchblade opens via a button or lever that releases a spring-loaded blade. Federal law restricts interstate commerce in switchblades, but possession and carry are governed by state law. The trend over the last decade has been toward legalization. States like Kansas, Arizona, Texas, and Tennessee have fully legalized them.
Assisted-opening knives
Assisted-opening knives are legally distinct from switchblades in most jurisdictions. They require you to manually start opening the blade, and a spring assists the remainder of the motion. Most states treat them as legal folding knives. Massachusetts is the most complex state here. Verify current law before carrying any spring-assisted knife there.
Balisongs (butterfly knives)
Butterfly knives are restricted in California, Connecticut, Hawaii, Iowa, New Mexico, and several other states, often classified as gravity knives or switchblades under older statutes. Check your specific state statute carefully before carrying a balisong.
Dirks and daggers
Double-edged fixed blades receive extra scrutiny in many states. California specifically criminalizes concealed carry of dirks and daggers under a separate statute from general knife carry. If you carry a tactical fixed blade, check whether your state distinguishes between single and double-edged designs.
Ballistic knives
Knives capable of propelling a blade as a projectile are banned at the federal level for interstate commerce and restricted or banned in most states. These are not commonly sold in the normal knife market.
Universal Restrictions That Apply Everywhere
Regardless of how permissive your state is, these locations are restricted in every jurisdiction:
- Schools and school grounds
- Courthouses and government buildings
- Airport security checkpoints and aircraft cabins (TSA)
- Federal buildings and federal property
- Correctional facilities
Many states also restrict carry in bars, polling places, places of worship, and sporting events. Always check your state's restricted-location list in addition to the general carry rules above.
Traveling Across State Lines
If you are road-tripping through multiple states, the safest approach is to carry to the most restrictive standard along your route. A standard folding knife with a blade under 3 inches that is not a switchblade or balisong will be legal in the overwhelming majority of states. If your route passes through New Jersey, Massachusetts, or New York, research those states specifically before you go.
For hunting, camping, or outdoor carry, a camp knife or hunting knife worn openly in a sheath is generally well-tolerated in moderate states when used in an outdoor context. Keep fixed blades sheathed and visible when not in use.
Related Knife Guides
- Best EDC Knives Under $50
- Best EDC Folding Knives
- Best Assisted Opening Knives
- Best Fixed Blade Knives for Hunting
- Best Lockback Knives
- Best Tactical Knives for EDC
Frequently Asked Questions About Knife Laws by State
What blade length is legal in most states?
A blade under 3 inches is legal in the vast majority of U.S. states. The more restrictive jurisdictions like Washington D.C. and Rhode Island have limits around 3 inches, while most states impose no general blade length restriction at all. Most standard folding knives sold at CritPro fall well within legal carry limits in nearly every state.
Are assisted-opening knives legal?
Yes, in nearly every state. Assisted-opening knives are legally distinct from switchblades in most jurisdictions because you must manually initiate the opening motion. Massachusetts is the most complex exception. The law there has been changing and current statute should be verified before carry. If you are unsure about your state, check whether the state's definition of "switchblade" requires the blade to open fully automatically without any manual initiation. If it does, an assisted-opener likely does not qualify as a switchblade.
Can I carry a pocket knife on a plane?
No. The TSA prohibits knives in carry-on luggage regardless of blade length. Knives must be packed in checked baggage, properly sheathed or wrapped to prevent injury to baggage handlers. This applies at all U.S. airports under federal TSA rules.
Does a concealed carry permit cover knives?
In most states, no. CCW permits cover firearms only. Tennessee and Wisconsin are notable exceptions where a valid CCW permit extends to knives as well. Always check your specific state statute to confirm what your permit covers before relying on it for knife carry.
What does statewide preemption mean?
Preemption means state law prevents local governments from enacting knife regulations stricter than the state standard. Without preemption (as in California, New York, and Florida), a city can have rules far stricter than state law. If your state lacks preemption, check city-level ordinances in addition to state law.
Are fixed blade knives legal to carry?
In most states, open carry of a fixed blade knife in a sheath is legal. Concealed carry of fixed blades is more restricted. Many states that allow concealed carry of folding knives restrict concealed carry of fixed blades, dirks, or daggers. Wearing a fixed blade openly on your belt is generally the safest approach in most states.
Final Notes: Knife Laws Change
The general trend over the last decade has been toward looser knife restrictions. States like Kansas, Texas, and Tennessee have significantly expanded what is legal to carry. However, local ordinances in major cities occasionally tighten enforcement, and court rulings like the 2024 Massachusetts decision can shift the legal landscape quickly. The information in this guide reflects publicly available statutory sources as of June 2026. Always verify current law before you carry, particularly if you are in one of the more complex states covered above.
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