Research Calculator

This calculator helps estimate the total resources needed to progress from your current technology to any future tech goals. Supports both capital city and allied culture cities.

The tech tree is displayed vertically and organized by age. Capital city trees feature collapsible age sections for easier navigation.

The calculator workflow consists of three steps. You navigate between these steps by clicking Next or Previous buttons at the bottom:

1. Select Opened Technologies: You can only select the latest techs you’ve unlocked. All prerequisites will be auto-selected and marked with a green background.
2. Select Target Technologies: Again, only the final technologies can be picked, and their dependencies are auto-marked. Targets are shown with a beige background.
3. View Resource Requirements: A summarized resource list is generated, sorted by resource age.

You can choose technologies across multiple ages—for example, calculating from the first to the last tech provides the cost to complete the full tech tree.

Your opened technologies are saved in the browser's local storage, so they will be restored automatically next time.

You can also import currently opened technologies from the game. Read how to do that.

Building Cost Calculator

This tool allows you to analyze the cost of constructing or upgrading buildings within a specific city. This calculator is also integrated directly into the City Planner. To begin, select:

• City
• Building
• Current Level
• Target Level

Special icons next to each level indicate their availability:

• construction – level can be constructed directly
• upgrade – level can only be reached via upgrade

The results are displayed in a table showing both required time and resources. Two cost columns are presented:

• Construction Cost – from scratch to target level, considering the nearest constructible level and any upgrade-only steps.
• Upgrade Cost – step-by-step from the current to target level.

This distinction helps determine whether to upgrade or demolish and rebuild.

World Wonder Calculator

Easily calculate the total number of resources needed to progress your world wonder in a given city. Simply select the city and define:

• Current Level
• Target Level

The calculator will output the total resources required for that upgrade and the basket count which will be filled.