Crit Chance Calculation?

[MacHorz]

Ok I wonder how crit chance works.

I have several armor/weapon/accessoirs with crit on it, for example:

Gun +49 (+5 extra)
Ammo +44 ( I know doesnt count,right?)
Helm +7
Body +12
Legs +8
Shield of Chtuhlu +50 ? (+4)
2x Scoop each +10 (+4)
2x accoessoirs with only +4 extra
and 1 with +2 and +4 extra

so I have total (without ammo) of 173%; or does it count different? And my shield of Chtuthlu shows +50 % Ingame but not on wiki

[JebKerman]

Shield of Cthulu's Crit Chance should be the Crit Chance of its bash/charge, same reason it has a Melee Damage statistic (looking at mine it says 4% crit chance).

You might find this page helpful:
https://terraria.gamepedia.com/Critical_hit

The 49% on your weapon is likely after several bonuses since, unless that page is outdated, which is possible, nothing has that kind of base crit chance.

[MacHorz]

Thanks.

I know that website. Not really explain crit.

I use megashark. so its strange.

Thats what I think, that weapon and/or ammo shows my total crit stats

[JebKerman]

Originally posted by MacHorz:

Thanks.

I know that website. Not really explain crit.

I use megashark. so its strange.

Thats what I think, that weapon and/or ammo shows my total crit stats

So a Megashark then... Hmm therefore:
4% (Megashark's Base Chance)
+7% (Vortex Head)
+12% (Vortex Body)
+8% (Vortex Legs)
+10% (Sniper Scope)
= 41% Crit chance

Assuming you have 2 'Lucky' Accessories, that would give you the 49% you see on the Gun.
I assume the weapon's modifier comes after that, so your crit chance should be 54%.

In short, your Crit chance should be what is displayed on the Weapon itself. The game has done the maths for you.