Grow a Garden Pet Age Calculator
Look up cumulative XP needed for any pet age, plus weight at that age. Pure reference table — no helpers or mutations factored in. For "how long does it take?" use the Pet XP Calculator.
XP from age 1 → 50
54,069 XP
Cumulative formula:
floor(20 × n^2.02)Age milestones — cumulative XP
| Age | XP needed | Step |
|---|---|---|
| Age 1 | 0 | +0 |
| Age 5 | 516 | +516 |
| Age 10 | 2,094 | +1,578 |
| Age 25 | 13,331 | +11,237 |
| Age 50 | 54,069 | +40,738 |
| Age 75 | 122,646 | +68,577 |
| Age 100 | 219,295 | +96,649 |
| Age 125 | 344,182 | +124,887 |
How pet age works
A pet's age in Grow a Garden is its level. It starts at age 1 (just hatched) and accumulates XP toward higher ages. The XP cost follows a power curve: floor(20 × age^2.02). This is verified ±2% to the in-game numbers by community testing.
What age unlocks
- Age 1 (hatch): base hatch weight, max ability cooldown.
- Age 50 (mid-life, 53.4K XP): mutation machine becomes worthwhile — most traders age-50 their pets before applying Rainbow / Ascended.
- Age 75 (typical trade target, 122K XP): ~6.8× hatch weight, near-max ability frequency.
- Age 100 (218.8K XP): weight cap (10× hatch). Most pets stop here for trade.
- Age 125 (max, 346.2K XP): minor stat improvements only. Collector / completionist stat.
Full XP-by-age reference table
| Age | Cumulative XP | Δ XP from prev | Weight × hatch |
|---|---|---|---|
| Age 1 | 0 | 0 | 1.00× |
| Age 5 | 516 | 496 | 1.36× |
| Age 10 | 2,094 | 1,578 | 1.82× |
| Age 25 | 13,331 | 11,237 | 3.18× |
| Age 50 | 54,069 | 40,738 | 5.45× |
| Age 75 | 122,646 | 68,577 | 7.73× |
| Age 100 | 219,295 | 96,649 | 10.00× |
| Age 125 | 344,182 | 124,887 | 12.27× |
FAQs
What is the maximum pet age in Grow a Garden?
Age 125 is the max in current Grow a Garden (April 2026). Beyond age 100, weight stops scaling (caps at 10× hatch weight) but XP and ability cooldown reduction continue accruing slightly.
How much XP do I need for age 100?
floor(20 × 100^2.02) = 218,776 cumulative XP. To go from age 1 → 100 you need exactly 218,776 XP earned over the pet's lifetime.
How much XP do I need for max age 125?
346,240 cumulative XP. From age 100 to 125 alone is 127,464 XP — almost as much as 1 → 100.
Why does the XP curve get steeper with age?
XP cost scales by power 2.02 (essentially squared). Each level costs ~2× the previous one. Age 50 → 100 doubles your cost; 100 → 125 doubles it again.
Can I skip ages?
No — XP is gained continuously and the pet ages up smoothly. Mutations like Inverted (+30% XP rate) speed up the rate but the curve is fixed.
What does age affect in trades?
NOTHING in modern Grow a Garden. Trade value depends on weight only. Age affects weight (heavier with more age) and ability cooldown — but not the trade-token formula directly. Use the Pet Value Calculator (weight-based) for trade values.
Is the XP curve the same for every pet?
Yes — the formula floor(20 × n^2.02) applies to every pet regardless of rarity or hatch weight. Heavier pets earn XP faster (5 + W/2 per second base), but the level requirements are universal.
Related calculators
- Pet XP Calculator — leveling time with helpers + mutation
- Pet Weight Calculator — weight at any age
- Pet Value Calculator — token value at weight (NOT age-based)
- Mutation Machine Guide — when to mutate