Knowing the breakdown of how long each aspect of a Town Hall level will take to complete can help when planning an efficient upgrade path. A breakdown of the upgrade costs and times for Town Hall 12 can be found below.

Note: These upgrade times assume the previous Town Hall was fully completed prior to upgrading and do not include the use of Magic Items.

Town Hall: 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Builders: 2 3 4 5 6

Gold Pass: None Realistic (17%) Gem Unlocked (20%)

Type	Resource	Total	Time
Structures	Gold
	Elixir
Lab	Elixir
	Dark Elixir
Heroes	Dark Elixir
	Elixir
Walls	Gold		N/A
	Mixed

Type	Total
Gold
Elixir
Mixed
Dark Elixir

* = Indicates this upgrade time is bottlenecked by a single upgrade (or multiple upgrade levels) that additional builders can't reduce.

Type	Total
Builder Time
Lab Time

What do the Gold Pass settings mean?

None (0%) - No Gold Pass boosts
Realistic (17%) - An average reduction if you unlock the boosts naturally throughout the month
Gem Unlocked (20%) - 20% boost if unlocked on the first day of each month with Gems

If you want to calculate the remaning costs for your village based on the oustanding upgrades, check out the Clash Ninja Upgrade Tracker:

Clash Ninja Upgrade Tracker

This section is primarily theorycrafting to calculate a rough cost if you were to use Gems to complete all of the upgrades for this Town Hall level.

Gem Purchase Costs

Below is a breakdown of how much it would potentially cost to purchase the gems to complete each category of upgrades.

The price in each currency is based on the cost of the gem packs in that region, not taking one currency and converting it to the others.