Well, I spend a bit of time wandering through the Criminal Code provisions on-line a while back, to try and figure this out.
Some things are specifically prohibited: no double-edged knives, or push daggers, or brass knuckles, or shuriken, or nunchuks. But there's no length limit on a knife for daily carry, so long as it's not concealed. Technically, a pocketknife (hidden in your pocket) is illegal, while a 22" chitlangi (worn openly on your belt) is OK. It comes down to an officer's discretion.
And the officer's discretion usually has to do with the intended or imminent USE of the knife - what are you likely to be doing with it? No officer is going to trouble me if I'm limbing a tree in my yard, or splitting kindling, or clearing brush on a jobsite. I won't get troubled for having it with me as I walk out into the back 40 of a farm, or on a wilderness camping trip - places where the khuk would have a legitimate "tool" use. But carry a stout blade into a bar or subway, or have it on your belt while standing in dark doorways in a tough part of town ... and it becomes a "deadly weapon." Same is true of crowbars, axes, chains, baseball bats, or hunks of 2X4. You'd not be charged for carrying a too-long blade, but for carrying a deadly weapon.
Canada's laws are intended to discourage carrying weapons, while allowing carrying tools. So the more obviously tool-like the knife is - which means both the type of knife and the likelihood of tool-use wherever it is that you're carrying it - the less trouble you'll have.
Some things are specifically prohibited: no double-edged knives, or push daggers, or brass knuckles, or shuriken, or nunchuks. But there's no length limit on a knife for daily carry, so long as it's not concealed. Technically, a pocketknife (hidden in your pocket) is illegal, while a 22" chitlangi (worn openly on your belt) is OK. It comes down to an officer's discretion.
And the officer's discretion usually has to do with the intended or imminent USE of the knife - what are you likely to be doing with it? No officer is going to trouble me if I'm limbing a tree in my yard, or splitting kindling, or clearing brush on a jobsite. I won't get troubled for having it with me as I walk out into the back 40 of a farm, or on a wilderness camping trip - places where the khuk would have a legitimate "tool" use. But carry a stout blade into a bar or subway, or have it on your belt while standing in dark doorways in a tough part of town ... and it becomes a "deadly weapon." Same is true of crowbars, axes, chains, baseball bats, or hunks of 2X4. You'd not be charged for carrying a too-long blade, but for carrying a deadly weapon.
Canada's laws are intended to discourage carrying weapons, while allowing carrying tools. So the more obviously tool-like the knife is - which means both the type of knife and the likelihood of tool-use wherever it is that you're carrying it - the less trouble you'll have.