LOJ Wiki

Calculators

Build time & speed-ups

How long a building upgrade takes with your Construction Speed, how long a whole plan takes with the buildings it requires, and how many speed-ups or Diamonds finish it.

How it works

Every upgrade has an Original Time, set by the level it reaches. The upgrade window shows less: the Original Time divided by 1 + your Construction Speed, and divided again by 1 + 15% while the return-player Building Benefit is on, rounded down.

Construction Speed is every source added together, as the attribute list shows it. Type it in, or open "From your upgrade window", enter the Original Time and the time shown for any one upgrade, and the page works the speed out.

Rapid Construction (Warden's Command, from Warden's Office Lv.8) adds 20% for 10m and can be used once every 24h. An upgrade's time is fixed when it starts, so the boost helps only an upgrade that starts while it is active, and then for its whole duration. Tick the upgrade you will start with it.

A building waits for the buildings it requires, so the plan includes every upgrade they still lack. Under Requirements, say what level each of them is at; untouched, each is one level short, so only its last upgrade is counted. Queue 1 is always open, Queue 2 is rented or bought, and prison rooms can also use the room queue.

Alliance help takes seconds off the time left on each upgrade, for each help up to the number of helps. The Communication Center sets the base and the alliance technologies add to it.

"Use all" spends your Building Speed-ups first, then your Universal Speed-ups, the biggest that fit first; the time still left costs Diamonds, rounded up for each upgrade. Speed-up items work from Warden's Office Lv.4, Diamonds from Lv.5.

Costs are the base values, before any resource-saving bonuses.

  • Building Speed-up (1h)

    Reduces the countdown of 1 construction queue by 1h.

  • Universal Speed-up (1h)

    Reduces the countdown of any queue in the prison by 1h.

  • Diamond

    A precious resource used for purchasing goods.

  • Rapid Construction

    Increases the construction speed of buildings by 20% for 10 min(s).

Main buildings
Prison rooms

Current

Target

Requirements

The plan includes the upgrades these buildings still need. Set the level each one is at now; untouched, each is one level short.

Construction Speed

Increases Construction Speed by 15%

From your upgrade window

Open an upgrade window and type its Original Time and the time it shows. The page fills in the smallest Construction Speed that gives that time, with Building Benefit as ticked above.

Ally's Assistance

Ally's Assistance 0 · Speed-up Time (second) 0

Time

Original Time–
Required Time–
With alliance help–
Plan finishes after–
#UpgradeOriginal Time Rapid Construction Required TimeWith alliance help
Total

Speed Up

Enter the speed-ups you own. They are spent upgrade by upgrade in plan order, the way "use all" does in game; what they leave is paid in Diamonds.

Total Speed-up Time–
Remaining Time:–
Diamonds with no speed-ups–
Diamond
Required–
Insufficient–

Diamond speed-ups: ceil(0.4444444 × seconds left) for each upgrade, after the items above.

Upgrade Cost

Food
Required–
Insufficient–
Wood
Required–
Insufficient–
Steel
Required–
Insufficient–
Gasoline
Required–
Insufficient–
Forticlad Core
Required–
Insufficient–
Advanced Forticlad Core
Required–
Insufficient–
Cash
Required–
Insufficient–

Base values before resource-saving bonuses. The Warden's Office level and the other requirements decide when each upgrade can start.

Details
#Upgrade Original Time (s)Required Time (s)With alliance help DiamondStartsEndsQueue