Every number on Stardew Tools comes from verified game data or from an assumption that is written next to it. This page explains how.
Where the data comes from
- The official Stardew Valley Wiki, which documents values from the game files.
- In-game checks for values that matter most to our calculations.
- Reports from players, which are confirmed before any value is changed.
Verification status
Each record in our data has a status:
- Verified: confirmed against the source for the current game version.
- Cross-checked: confirmed in two independent sources.
- Needs verification: collected but not yet confirmed. These values are never used as calculation inputs.
- Deprecated: no longer true in the current game version.
When two sources disagree, we do not pick one quietly. The value stays out of calculations until it is resolved.
Game version
Data is checked for Stardew Valley 1.6.15. When a new version is released, affected tools are re-checked and the changes are listed in the changelog.
How calculations work
All tools use one shared calculation engine, so the same crop gives the same result everywhere on the site. Each tool shows an “Explain the Math” section with the actual numbers from your inputs, and lists its assumptions, such as professions, fertilizer, crop quality and days left in the season.
Who maintains the data
The data, the calculation engine and these pages are maintained by Ali Ahmad, founder of Stardew Tools (LinkedIn). Every record keeps its source and the date it was last checked, and a value that two sources disagree on stays out of the calculations until it is resolved.
Report a mistake
If a value looks wrong, email contact@stardewtools.net with the page and your game version.