Clash of Clans Cannons

Summary

Clash of Clans Cannons are the first defensive structure that a player will receive at the start of their Clash of Clans adventure.
Cannons are both cheap and quick to upgrade at lower levels.
Cannons can shoot any ground units, such as Barbarians, but not any air units, such as the Dragon.

Cannons have a high rate of fire and a decent range, which makes them an ideal deterrent for Wall Breakers (which have extremely low health).
Cannons are very useful for keeping Giants from attacking other defenses. Defend Mortars and Wizard Towers by placing them within range of Cannons. Make sure Cannons are placed within range of Air Defenses, because Cannons are unable to target air units (or at least in range of an Archer Tower or Wizard Tower).
Upgrade these structures and Mortars first at lower levels, as they are one of your main ground defenses.
It is a good idea to upgrade these structures to level 10, as they become very intimidating to potential attackers, possibly causing them to skip your village.

Cannons are one of only two defensive units that cannot attack air units, the other being the Mortar. However, they are the cheapest and most common defensive structure available. This makes them easy pickings for Balloons, Dragons or Minions if they are not within range of Air Defenses, Archer Towers or Wizard Towers. Cannons are also only able to damage one unit at a time. This makes it very easy to overwhelm them with large groups of Archers or Barbarians. Even though this is a weakness, remember that the Cannon also puts out a decent shot per second.

Town Hall Level	1	2	3	4	5	6	7	8	9	10
Number Available	2	2	2	2	3	3	5	5	5	6

Level	Damage per Second	Damage per Shot	Hitpoints	Cost	Build Time	Experience Gained	Town Hall Level Required
1	9	7.2	400	250	1 minute	7	1
2	11	8.8	450	1,000	15 minutes	17	1
3	15	12	500	4,000	45 minutes	51	2
4	19	15.2	550	16,000	2 hours	84	3
5	25	20	590	50,000	6 hours	146	4
6	31	24.8	610	100,000	12 hours	207	5
7	40	32	630	200,000	1 day	293	6
8	48	38.4	660	400,000	2 days	415	7
9	56	44.8	690	800,000	3 days	509	8
10	65	52	960	1,600,000	4 days	587	8
11	75	60	1,060	3,200,000	5 days	657	9
12	86	68.8	1,160	6,400,000	6 days	720	10
13	98	78.4	1,260	7,500,000	7 days	777	10

Range	Attack Speed	Damage Type	Unit Type Targeted	Size
9	0.8s	Single Shot	Ground	3×3

1	2
Defensive Buildings	Cannon • Archer Tower • Mortar • Air Defense • Wizard Tower • Air Sweeper • Hidden Tesla • X-Bow • Inferno Tower • Eagle Artillery • Walls • Traps
Resource Buildings	Town Hall • Gold Mine • Elixir Collector • Dark Elixir Drill • Gold Storage • Elixir Storage • Dark Elixir Storage • Builder's Hut • Clan Castle (Treasury)
Army Buildings	Army Camp • Barracks • Dark Barracks • Laboratory • Spell Factory • Dark Spell Factory • Barbarian King Altar • Archer Queen Altar • Grand Warden Altar
Other Buildings	Decorations • Obstacles • Loot Cart