⭐ Grow a Garden Age Calculator (Pet XP & Leveling)
Free Grow a Garden age calculator for pet ageing (leveling) and egg hatch times. Enter your pet's current age, target age and XP per second — get the exact XP required (using the wiki's 20 × Age^2.02 formula) and how long it will take. Also includes an Egg Hatch Time calculator showing exact base hatch times for every egg.
🌟 Pet XP to Next Age Calculator
Every pet uses the same XP curve, so there's no rarity option. Enter your pet's XP per second to get a time estimate (0.5 XP/s is the wiki's base rate; booster pets and pet mutations add more).
🥚 Egg Hatch Time Calculator
This shows each egg's base hatch time from the wiki. Hatching can be sped up — by pets such as the Chicken, Rooster, Kiwi and Rhino, and by the Egg Incubator (a Pet Achievements reward you "power" with crops) — but none of them has one fixed percentage, so the calculator doesn't guess. Every egg, its odds and its hatch time are on our Grow a Garden eggs page.
📐 The Grow a Garden XP Formula
Per the Grow a Garden wiki, the XP a pet needs to go from its current Age to the next is:
The curve is the same for every pet. Rarity and weight don't change it. Adding up every age from 1 to 499 gives 934,544,088 XP to max a pet. In-game screenshots show the same 219,296 XP requirement at Age 100, and other community calculators use the same 20 × n^2.02 curve. Our calculator reproduces the wiki's full XP table exactly.
A pet's base XP gain is 0.5 XP per second (wiki), and it only ages while its hunger bar is above 0. A full hunger bar lasts about 12 hours. Feeding a pet crops refills hunger; the wiki gives no XP value for feeding. XP-booster pets and pet mutations raise the rate, which is why the time column below changes so much with your XP/s.
XP Needed by Age
| Age | XP to next age | Total XP from Age 1 | Time at 0.5 XP/s | Time at 20 XP/s |
|---|---|---|---|---|
| Age 10 | 2,094 | 5,922 | 3.3 hours | 5 minutes |
| Age 25 | 13,331 | 103,781 | 2.4 days | 1.4 hours |
| Age 50 | 54,069 | 868,329 | 20.1 days | 12.1 hours |
| Age 75 | 122,646 | 2,984,794 | 69.1 days | 1.7 days |
| Age 100 | 219,296 | 7,152,163 | 165.6 days | 4.1 days |
| Age 150 | 497,433 | 24,458,761 | 1.6 years | 14.2 days |
| Age 200 | 889,428 | 58,458,516 | 3.7 years | 33.8 days |
| Age 300 | 2,017,506 | 199,406,925 | 12.6 years | 115.4 days |
| Age 400 | 3,607,374 | 475,995,715 | 30.2 years | 275.5 days |
| Age 500 | Maxed | 934,544,088 | 59.3 years | 1.5 years |
Times assume constant XP/s and a hunger bar that never runs out. 20 XP/s is just an example of a boosted setup.
Ageing a pet raises its weight, and per the Grow a Garden wiki pet stats scale with weight — so depending on the pet, cooldowns get shorter or chances and effects get bigger. Heavier, older pets also tend to trade for more.
Key Age Milestones
- Age 50 — the minimum age for the Pet Mutation Machine (it resets the pet to age 1 after mutating).
- Age 100 — a common stopping point for traders; the XP cost per age climbs steeply beyond it. Weight keeps growing past 100: every age adds one-eleventh of the Age-1 weight.
- Age 500 — the hard maximum. A pet stops ageing and its weight stops growing, at about 46.4× its Age-1 weight (510 ÷ 11). See the Pet KG calculator for your pet's weight at age 500.
🚀 Ways to Get More XP per Second
The wiki lists these XP sources. Feeding isn't one of them: it keeps the hunger bar up so the pet keeps ageing.
| Source | Effect (per the wiki) |
|---|---|
| Owl, Night Owl, Blood Owl, Cooked Owl | Bonus XP per second to all active pets |
| Capybara | Prevents hunger loss and grants XP every second to nearby pets |
| Starfish, Squirrel | Gain additional XP per second themselves |
| Iguanodon / Mochi Mouse / Barn Owl | Bonus XP per second to Dinosaur / Food / Fall-type pets |
| Sea Turtle | Occasionally gives bonus XP to a random active pet |
| Shiny / Inverted pet mutation | +30% / +50% XP per second (older guides list +15% / +30%) |
| Tiny / Mega pet mutation | +5–30 / +10–40 XP per second (Tiny: 20% slower hunger; Mega: 20% faster) |
| Levelup Lollipop | +1 age (above Age 100 it fills only part of the XP bar) |
🥚 Egg Hatch Time Reference
Base hatch times only. Hatch-speed pets (Chicken, Rooster, Kiwi, Bald Eagle; the Rhino can halve an egg's time) and the Egg Incubator (a Pet Achievements reward you "power" with crops) can shorten them — see how to hatch eggs faster. Full odds for all 65 eggs are on the eggs page.
| Egg | Base Time | Rarest Pets (hatch chance) |
|---|---|---|
| Common Egg | 10 minutes | Dog, Golden Lab, Bunny (33.33% each) |
| Uncommon Egg | 20 minutes | Black Bunny, Chicken, Cat, Deer (25% each) |
| Rare Egg | 2 hours | Monkey 8.33%, Pig and Rooster 16.67% |
| Legendary Egg | 4 hours | Turtle and Polar Bear 2.13%, Sea Otter 10.64% |
| Mythical Egg | 5h 6m 40s | Red Fox 1.5%, Red Giant Ant 8.5% |
| Bug Egg | 8 hours | Dragonfly 1%, Praying Mantis 4% |
| Jungle Egg | 8 hours | Tiger 1%, Chimpanzee 5% |
| Paradise Egg | 6h 40m | Mimic Octopus 1%, Scarlet Macaw 8% |
| Zen Egg | 4h 10m | Kitsune 0.08%, Kappa 3.5% |
| Bee Egg | 4h 10m | Queen Bee 1%, Petal Bee 4% |
| Premium eggs | 30 seconds | Robux-only eggs; odds vary by egg |
🧭 Pet Leveling Strategy
- Keep the hunger bar above 0 — a pet with empty hunger stops ageing. Feed cheap crops you don't need to sell; the crop type and its mutations set how much hunger is restored.
- Stack XP boosters — Owl-family pets and Capybara help every active pet, so one boosted setup levels several pets at once.
- Mind the curve — Age 100 takes about 7.2 million XP, while Age 500 takes about 934.5 million (roughly 130× as much), so most players stop well before max.
- Only mutate when you're ready — the Pet Mutation Machine needs Age 50+ and resets the pet to Age 1, so every bit of that XP has to be earned again.
Cooldowns, chances and amounts for every pet at its weight, at any age up to 500.
Open the Pet Ability Calculator →❓ XP & Leveling FAQ
How much XP does a pet need to reach max age?
934,544,088 XP from Age 1 to Age 500 (the maximum), using the wiki's 20 × Age^2.02 curve. Age 100 alone takes 7,152,163 XP. At the base 0.5 XP/s, reaching Age 100 takes about 166 days of non-stop ageing, which is why XP boosters matter. Pet mutations do not need age 500: the Mutation Machine accepts pets of age 50+.
Can I lose pet XP?
Trading or unequipping a pet keeps its age. But the Pet Mutation Machine resets a pet to Age 1, and the wiki lists a few pet mutations that drain a percentage of XP per second in exchange for a bigger passive boost.
Is there a "Speed Egg Hatcher" item?
No — there's no item by that name. Hatching is sped up by pets (the Chicken, Rooster, Kiwi and Bald Eagle, and the Rhino, which can halve an egg's hatch time) and by the Egg Incubator, a Pet Achievements reward you "power" with crops. None of them has one fixed published percentage.
Does feeding a pet give XP?
Feeding refills the hunger bar, and a pet needs hunger above 0 to keep ageing. The wiki doesn't list an XP value for feeding, so this page doesn't invent one. The crop and its mutations change how much hunger is restored.
Does rarity change how much XP a pet needs?
No. A Common and a Prismatic pet both need 219,296 XP to go from Age 100 to 101. Rarity can change a pet's hunger bar size, not its XP curve.
Does pet weight affect XP?
Weight doesn't change the XP cost of an age. Whether it raises a pet's own base XP rate is disputed: the wiki lists a flat 0.5 XP/s, while some calculator sites use a weight-based rate. Many XP-booster pets, such as Blood Owl, do give more XP the heavier they are. Weight itself grows with age: every age adds one-eleventh of the Age-1 weight.