Bomb Tower is one of the most popular defenses in Clash of Clans.
Currently, there are 12 levels available for this defense.
And, it takes quite a lot of time for a player to upgrade it as the gold cost is high and the upgrade takes a week or more than a week to complete.
It is quite common for players to forget about the upgrade cost of Bomb Tower and their corresponding upgrade time.
To solve that issue, I've come up with this article!
In this article, I've listed the upgrade cost, and upgrade time of Bomb Tower in Clash of Clans.
I've done all the math required so that you don't have to!
So, without any further ado, let's dive right into it!
Bomb Tower Upgrade Cost and Upgrade Time in Clash of Clans
I've organized the entire data in a table.
Moreover, to make sure that everything is easy to read and understand, I've also written the data in text in an organized manner.
The following table displays the upgrade cost, and upgrade time of Bomb Tower in the game:
| Bomb Tower Level | Upgrade Cost (gold) | Upgrade Time |
|---|---|---|
| 1 | 700,000 | 12 hours |
| 1 to 2 | 1,000,000 | 18 hours |
| 2 to 3 | 1,300,000 | 1 day |
| 3 to 4 | 1,800,000 | 1 day 12 hours |
| 4 to 5 | 1,900,000 | 1 day 18 hours |
| 5 to 6 | 2,000,000 | 2 days |
| 6 to 7 | 4,000,000 | 3 days |
| 7 to 8 | 5,000,000 | 4 days |
| 8 to 9 | 6,000,000 | 4 days 12 hours |
| 9 to 10 | 7,000,000 | 5 days |
| 10 to 11 | 8,500,000 | 6 days 12 hours |
| 11 to 12 | 20,000,000 | 15 days |
The data in the above table can be interpreted as:
- You'll require 700,000 gold to build a level 1 Bomb Tower. It will be built in 12 hours.
- To upgrade a level 1 Bomb Tower to level 2, you'll need 1,000,000 gold. The upgrade gets completed in 18 hours.
- Upgrading a level 2 Bomb Tower to level 3 requires 1,300,000 gold. And, the upgrade takes 1 day to complete.
- To upgrade a Bomb Tower from level 3 to level 4, you'll require 1,800,000 gold. The upgrade will take 1 day 12 hours to complete.
- Upgrading a Bomb Tower from level 4 to level 5 will require 1,900,000 gold. And, the upgrade gets completed in 1 day 18 hours.
- To upgrade a Bomb Tower from level 5 to level 6, you'll require 2,000,000 gold. The upgrade will take 2 days to complete.
- Upgrading a Bomb Tower from level 6 to level 7 requires 4,000,000 gold. And, the upgrade gets completed in 3 days.
- To upgrade a Bomb Tower from level 7 to level 8, you'll require 5,000,000 gold. The upgrade will take 4 days to complete.
- Upgrading a Bomb Tower from level 8 to level 9 requires 6,000,000 gold. And, the upgrade gets completed in 4 days 12 hours.
- To upgrade a Bomb Tower from level 9 to level 10, you'll require 7,000,000 gold. The upgrade will take 5 days to complete.
- Upgrading a Bomb Tower from level 10 to level 11 requires 8,500,000 gold. And, the upgrade gets completed in 6 days 12 hours.
- To max out your Bomb Tower by upgrading it from level 11 to level 12, you will need 20,000,000 gold and 15 days of time!
Conclusion
In this article, I've listed the upgrade cost of Bomb Tower along with the corresponding upgrade time.
I'll also update the data in this article if any numbers change in the game in the future.
Also, please note: I've updated the data in this post. The entire data in this post is up-to-date as of 2 October 2025.
To max out the Bomb Tower quickly and efficiently, you should use mainly farming attack strategies to arrange for the gold required for the upgrades.
Now, I'd like to hear from you:
Have you already maxed out the Bomb Tower in your base? If not, what's the current level of the Bomb Tower?
Or, you might have a question.
Either way, feel free to let me know by dropping down a comment below!
I've also written an article in which I've listed the upgrade cost along with the corresponding upgrade time of Inferno Tower in Clash of Clans. You can read it here.
Cheers,
Raj Oberoi