Pet XP Calculator

Calculate the time needed for your pet to grow from current age to target age

Boosts

About Pet XP Calculator

Calculate the exact time needed to grow your pets from any age to your target age. Our Pet XP Calculator includes all boost systems including owls, mice, starfish, and custom XP modifiers.

🦉 Owl Management

Configure up to 8 owls with individual XP rates. The calculator automatically adjusts the maximum when mice or starfish are active.

🐭 Mouse & Starfish Boosts

Choose between brown mouse (750 XP/8min), grey mouse (500 XP/10min), or starfish boost with mutual exclusivity logic.

Disclaimer: Grow a Garden Box is an independent fan-made calculator tool. We are not affiliated with, endorsed by, or connected to Roblox Corporation or the creators of the "Grow a Garden" game. All calculations are based on community research and may not reflect exact in-game values.

© 2025 Grow a Garden Box. Free calculator tools for the Roblox Grow a Garden community.