Building Upgrade Calculator

Pick one or more buildings, set where each stands today and the level you are aiming for, then add your construction speed bonus and press Calculate to see the total resources and time.

How to use the Building Upgrade calculator

  1. Tick every building you want to plan under "Buildings to upgrade".
  2. For each ticked building, set its "Current level" and the "Target level" you are aiming for.
  3. Under "Construction speed bonus", enter "Your own bonus" and, if you like, pick a "VIP level" and a "Boost item".
  4. Press "Calculate"; the result only changes when you press it, and a note reminds you when your inputs have changed.
  5. Read the resource totals, "Base time" and the time with your speed bonus, then open "Per building" and "Upgrade steps" for the details.
  6. Copy the page link to share the plan, or press "Reset" to start again.

Example: Base and Hospital from level 10 to 12

Tick Base and Hospital and set both to Lv.10 → Lv.12. After "Calculate", the plan covers 2 buildings and 4 upgrade steps: 3,421,200 Food, 2,312,200 Iron and 1,456,300 Coin, with a "Base time" of 19 hr 26 min 11 sec.

The per-building table splits this into Base (1,710,600 Food, 1,710,600 Iron, 955,000 Coin, 8 hr 28 min) and Hospital (1,710,600 Food, 601,600 Iron, 501,300 Coin, 10 hr 58 min 11 sec), and shows that Hospital level 12 needs Base Lv.12, so upgrade the Base first.

Enter 20 as your own bonus and choose VIP 5, which adds another 20%. The total speed bonus becomes +40% and the time drops to 13 hr 52 min 59 sec.

Frequently asked questions

Can I plan several buildings at once?
Yes. Tick as many buildings as you need; the totals add up every selected range, and the per-building table shows each building's share.
How does the speed bonus change the time?
The calculator treats the bonus as extra speed: +100% finishes a build in half the base time, and +40% divides it by 1.4. The base time is always shown next to the adjusted one.
How are my own bonus, VIP level and boost item combined?
The calculator adds them into one total speed bonus. For example, 20% of your own plus VIP 5 (20%) plus Super Construction Crew (50%) gives +90%.
What does a level in the table mean?
Each level shows what it costs to reach it from the level below. Going from level 10 to 12 therefore adds up the costs of levels 11 and 12.
What does * next to a time mean?
Some steps in the range have no time shown, so the total marked with * covers only the steps that do.
Can I share my plan?
Yes. After you press "Calculate", the page link holds your buildings, levels and bonuses, so anyone who opens it sees the same plan.