Grow a Garden Pet Hatch Weight
Grow a Garden Pet Hatch Weight · Egg weight tool
Quick answer
The Grow a Garden Pet Hatch Weight tool estimates how much a pet will weigh when it hatches, from two inputs: the egg base weight and the age at hatch. Enter both numbers and the tool gives the hatch weight and the size tier for that weight. It does not give pet XP, and it does not guess a pet type for you.
Grow a Garden Pet Hatch Weight tool estimates weight a pet will have when it hatches from an egg in Roblox Grow a Garden. You enter the pet’s data points and the tool interpolates a hatch weight estimate from them.
Pet weight is one of main factors behind grow a garden pet trade value. Heavier pet generally worth more in trades because weight multiplies through value calculation.
Knowing expected hatch weight before you crack open an egg helps decide whether to hold it, trade the egg itself, or use pet after hatch.
This is not an official tool and not affiliated with Roblox or game’s developers. All weight data comes from GAG community through in-game testing. Results are estimates.
All weight data comes from the GAG community through in-game testing. Results are estimates. Verify in game before trading.
Pet Hatch Weight
Enter the egg’s base weight and the pet’s age at hatch. This formula is agreed across competitors.
How to use
- Enter the egg base weight in kilograms.
- Enter the age at hatch. This is the age value used by the formula below, not a calendar date.
- Read the hatch weight and the size tier shown by the tool.
- If you change either input, the result updates.
- Do not use this tool for pet XP. Pet XP is not part of this tool, for the reason given below.
Pet XP is not part of this tool. Competitors disagree on the pet XP formula by about 9 times, so no XP formula is published here until the conflict is settled with in-game evidence.
Formula and rules
Wh = (11 x Wb) / (A + 10)
Where Wh is estimated hatch weight, Wb is base weight for that pet type, and A is pet’s age at hatch.
The formula is: Hatch weight = (11 x egg base weight) divided by (age at hatch + 10). This formula is agreed across competitors.
| Size Tier | Hatch Weight |
|---|---|
| Tiny | under 1 kg |
| Small | 1 kg to 2 kg |
| Average | 2 kg to 4 kg |
| Large | 4 kg to 5 kg |
| Giant | 5 kg to 9 kg |
| Super Giant | over 9 kg |
The tier follows the hatch weight only. A higher age at hatch gives a lower hatch weight, because the age value sits in the bottom part of the formula.
Pet that hatches at age 0 starts at maximum possible hatch weight. Older pet when it hatches, lighter it tends to be.
Why pet weight matters
In Grow a Garden, pets start at hatch weight when they first appear and can grow heavier over time as you level them up.
Heavier pet tends to be worth more in trades.
When players talk about gag pet weight kg, they usually mean pet’s current weight shown on tooltip in-game.
Hatch weight important because it determines starting point. Pet that hatches heavy is already ahead. You do not need to invest feeding time to bring it up to tradeable weight, it starts there.
That is why experienced traders pay attention to gag pet hatch weight estimates before spending on eggs.
How hatch weight connects to trade value
grow a garden pet trade value for most pets scales with weight. Community uses weight tiers to classify pets, heavier pets in higher value tiers.
Pet that hatches as Super Giant (roughly above 9 kg depending on pet type) commands noticeably higher trade value than same pet at standard hatch weight.
This is why gag pet weight calculator is used before trading, not just after.
If buying an egg or trading for one, knowing expected grow a garden egg hatch weight helps compare deal against what you would be getting in return.
For trades involving both pets and crops, use this page to estimate pet’s contribution and Trade Checker to run full comparison.
Worked example
Take an egg base weight of 10 kg and an age at hatch of 0. The formula gives (11 x 10) divided by (0 + 10), which is 110 divided by 10, which is 11 kg. That is Super Giant, because it is over 9 kg. Now take the same egg base weight of 10 kg, but an age at hatch of 10. The formula gives (11 x 10) divided by (10 + 10), which is 110 divided by 20, which is 5.5 kg. That is Giant, because it falls in the 5 kg to 9 kg tier. Take the same egg base weight of 10 kg again, but an age at hatch of 100. The formula gives (11 x 10) divided by (100 + 10), which is 110 divided by 110, which is 1 kg. That sits on the edge of Small, which starts at 1 kg.
Pet Weight at Age 500
Age 500 is maximum pet age in Grow a Garden. Players often want to know what pet will weigh at age 500 to understand long-term trade ceiling. To estimate that, you need pet’s current weight and age and then project forward using weight progression formula. This tool focuses on hatch weight specifically. For full age-to-weight projection, data points this tool collects are same inputs you would need for that calculation.
FAQ
What does the Grow a Garden Pet Hatch Weight tool do?
It estimates a pet’s weight at hatch from egg base weight and age at hatch, and it gives the size tier for that weight.
How accurate is grow a garden pet hatch weight estimate?
Accuracy depends on how many community data points exist for that pet. Pets with many collected data points give tighter estimates. Pets with sparse data give wider range. For rare or newly released pets, treat estimate as rough guide until more data is collected.
Which pets are covered by this tool?
Tool covers pets for which community has collected enough data points to produce reliable interpolation. If pet is not listed, it means data has not been gathered yet. The database grows as more players contribute hatch data.
Where do I find pet’s weight in-game?
Open pet’s tooltip in game. It shows current weight in kilograms. That is number to use for any trade or feeding decisions.
Does a higher age at hatch give a heavier pet?
No. A higher age gives a lower hatch weight for the same egg, because age sits in the bottom part of the formula.
What are the size tiers?
Tiny is under 1 kg, Small is 1 kg to 2 kg, Average is 2 kg to 4 kg, Large is 4 kg to 5 kg, Giant is 5 kg to 9 kg, and Super Giant is over 9 kg.
What is Super Giant in Grow a Garden?
Super Giant is unofficial weight tier label used by community. It refers to pets that hatch above certain weight threshold, typically around 9 kg or above, though exact cutoff varies by pet type. Super Giant pets carry premium in trading community because of weight head start.
Does pet weight affect my crop mutations?
No. Pet weight in Grow a Garden is separate from crop value formula. Pet abilities can affect crop growth or yield, but pet’s weight itself does not feed into gag crop value calculator formula.
Why is pet XP not in this tool?
Because competitors disagree on the pet XP formula by about 9 times, so no XP formula is published here until that conflict is settled with in-game evidence. This tool covers hatch weight only.
Can I use hatch weight as a trade price?
No. Hatch weight is one fact about a pet. It is not a trading price, and this tool gives no trading advice.
Related tools
- Trade Checker – compare both sides of a trade for a Win, Fair, or Loss verdict
- Grow a Garden Calculator – find what a GAG1 crop is worth before you sell it
- Grow a Garden 2 Calculator – crop values for Grow a Garden 2, which uses a different formula
- Methodology – full formula derivation and data source notes
Checked: October 29, 2026. Basis: the plugin formulas and the competitor analysis of 2026-10-28. The hatch weight formula is agreed across competitors. Verify in game before trading.