If you’re in Texas and wondering “How long can the blade of my knife be?” the answer is: for most adults, you may carry a knife of any blade length, but once the blade is over 5½ inches, the knife is classified as a “location-restricted knife,” which means you face additional restrictions on where you can carry it. So the legal question isn’t just “how long” — it’s also “where.”
What Texas Law Says Right Now
Under the Texas House Bill 1935 (effective September 1, 2017), Texas removed many prior bans on the type or size of knives and shifted the focus to where they are carried. Specifically:
- The statute defines a “location-restricted knife” as any knife with a blade length over five and one-half inches (5½”).
- For adult carry (open or concealed), Texas does not impose a statewide blade-length cap for normal knives. One legal commentary states: “In Texas, there is no specific maximum legal blade length for an adult to carry in most public places.”
- The key is location: if you carry a knife with a blade longer than 5½″ into a place where weapons are prohibited (schools, courthouses, racetracks, etc.), you may commit a crime.
- If you are under 18, carrying a blade over 5½″ is prohibited in most circumstances.
What That Means for Knife Length & Carrying
What you can generally do
- You may carry a knife (folding, fixed-blade, switchblade, balisong, etc.) of almost any blade length as an adult, under Texas state law, provided you are not entering a “weapon-prohibited location.”
- Knives with blades 5½″ or less are treated as standard knives for most purposes and do not trigger the “location-restricted” category.
- Both open-carry and concealed-carry of knives (including those with blades longer than 5½″) may be legal — the difference is in the location you carry. Texas’s statute removed many previous distinctions.
What you must avoid or be careful about
- Carrying a knife with a blade over 5½″ into certain restricted places is considered possessing a “location-restricted knife” in a weapon-prohibited location. That can lead to criminal charges.
- Just because the blade is very long does not mean you’re automatically legal; the location and context matter. Some sources stress that the old 5½″ rule is outdated in the sense of “maximum allowed everywhere” but still relevant as the dividing line for “location-restricted.”
- If you are a minor (under age 18), you generally cannot carry a knife with a blade over 5½″ except under certain conditions (supervision, on your property, etc.).
Restricted Locations & Penalties
Texas law under Texas Penal Code Chapter 46 lists places where weapons (including “location-restricted knives”) are prohibited. These include:
- Schools and school-sponsored events or vehicles,
- Polling places on election day,
- Government court offices or buildings,
- Racetracks, secured areas of airports, correctional facilities, hospitals, etc.
If you carry a knife over 5½″ into one of these zones, you may be charged with a felony in more serious cases (for example on school premises) or a Class C misdemeanor (fine up to $500) in less serious location violations.
Measuring the Blade Correctly
The correct measurement method in Texas is from the tip of the blade to the forward-most part of the hilt or handle (not just the sharpened edge). One case, McMurrough v. State, clarified this measurement standard.
Example: A blade might have a 5″ sharpened edge but if it has a substantial ricasso or unsharpened portion before the handle, the total may exceed 5½″ and become “location-restricted.”
Why the Law Was Changed
Texas moved away from arbitrary “prohibited knives” lists toward a location-based regulation model. The change simplified the law, removed style-based bans (e.g., switchblades) for adults, and focused on where instead of what size.
Effectively: “What you carry matters less than where you carry it.”
Practical Advice for Texans
- Carrying a small knife (blade ≤ 5½″) gives broad freedom and fewer location restrictions.
- If you carry a long blade (> 5½″), always check whether your destination is one of the restricted locations.
- When in doubt, treat a long blade as if you’re entering a location-restricted zone and adjust accordingly.
- Remember: local ordinances cannot override state preemption — Texas Local Government Code § 229.001 preempts local knife laws in many respects.
- If you’re traveling with a knife, especially to other states, check local laws — out-of-state rules may differ significantly.
Final Take
In Texas, the question isn’t simply “how long can the blade be?” The bottom line: for most adults you may carry a knife of any blade length so long as you avoid carrying it into a location-restricted zone defined by state law. The critical threshold is 5½ inches — knives with blades longer than that are fine for many places, but not allowed in certain restricted areas. If you strike the right balance and check your surroundings, you can legally carry your knife in Texas.
