This page is a planning desk rather than a second version of each calculator. Start with the decision you need to make: verify a pet's original weight, estimate the time needed for an age target, compare passive abilities, or decide whether an egg-speed boost is worth equipping. The focused tools above handle each calculation without mixing unrelated inputs.
1. Recover hatch weight before comparing pets
Two pets of the same species and current weight are not necessarily equivalent if their ages differ. The community-tested growth relationship is W = (hatch weight ÷ 11) × (age + 10). Reverse mode in the pet weight calculator estimates the fixed hatch value from the current age-and-weight pair. That gives a fair baseline for future growth instead of judging an older pet by its larger displayed number.
2. Separate growth potential from usefulness
Weight describes size potential; it does not tell you whether a passive suits your garden. A lighter pet with the right weather, mutation, or hatch support may contribute more than a heavier pet whose ability is irrelevant to your current crops. Use the ability search to shortlist roles, then compare those candidates in the tier list. Tier rankings are editorial guidance, not fixed trade prices.
3. Price the time, not only the final age
Pet XP rises on a curved schedule, so the last part of a leveling target can take disproportionately longer than the first. Check the age gap in the XP calculator before paying a premium for a partially leveled pet. For eggs, compare the base timer with your actual helper boosts in the hatch calculator; its reduction cap prevents an impossible zero-minute estimate.
A practical trade-check workflow
- Record the pet's species, current age, and exact weight.
- Reverse-calculate hatch weight and project the target age.
- Check whether the ability supports your current garden plan.
- Estimate remaining leveling time instead of assuming age is free.
- Enter both sides in the WFL trade calculator and treat the result as a numerical check, not a guarantee of market demand.
Pet mechanics can change after patches. Calculator results use the formulas and thresholds documented on this site; confirm the displayed in-game stats before completing a high-value trade and report mismatches through contact so the underlying data can be reviewed.