How Weight Works in Steal An Egg: KG, Size and Income Explained

What the kg on your pet card means

Every pet you hatch rolls a weight, shown in kg on its card. It is rolled separately from the colour, which is why you can hatch a plain pet that is huge or a Golden one that is tiny. Bigger eggs in the nest hold heavier pets.

The kg on its own tells you little, because every kind of pet has its own hidden normal weight. A normal Kitsune weighs 260 kg, while a normal Lava Frog weighs 4 kg. So a 30 kg Lava Frog is a giant, and a 300 kg Kitsune is barely above normal.

The formula

Income is the pet’s base income, times its colour, times a size bonus that comes from its weight:

• Up to 125 times the normal weight: size bonus = (your weight / normal weight) to the power of 37/60.
• Above 125 times: size bonus = (your weight / normal weight) to the power of 2/5, times 125 to the power of 13/60.

The second part joins the first exactly at 125x, so there is no jump; growth just slows down. In plain numbers:

Weight vs normal	Size bonus
2x	about 1.5x
10x	about 4.1x
50x	about 11.2x
100x	about 17.1x
125x	about 19.7x
200x	about 23.7x
1,000x	about 45.1x

Try it on a real pet

Type any weight for a Kitsune below and see what it earns before colour. It uses the same formula as the table.

Try it on BloxStonksSteal An Egg Weight calculatorPick any of 158 pets, type its kg and colour, and see its income→

Weight or colour: which is worth more?

Colours multiply income by a fixed amount: Silver x1.2, Golden x2.5, Rainbow x3.5, and event colours like Parasite x3 and Fractured x2.75. You can turn each one into the weight it is worth:

• Golden (x2.5) is worth the same as about 4.4 times the normal weight.
• Rainbow (x3.5) is worth the same as about 7.6 times the normal weight.

Rainbow is a 1 in 100 roll, while pets several times their normal weight are far more common. That is why weight usually adds more to a base than colour does. Because the two multiply, a heavy Rainbow pet is the best thing you can own.

Try it on BloxStonksSteal An Egg MutationsEvery colour mutation, its multiplier and how to get it→

Heavy eggs slow you down

The heavier the egg, the slower you run while carrying it. In far biomes the guardian is fast, so a big egg can get you caught. Train a bit more Speed than the biome needs before you go for the heaviest eggs.

What to do with this

• Check the kg on every pet you hatch and compare it with that pet’s normal weight.
• When your pen is full, swap out the pets with the lowest income after size and colour, not the lowest rarity.
• Before you use a 10% mutation item, put it on your heaviest pet: the colour multiplies whatever the weight already gives.

Try it on BloxStonksSteal An Egg Income calculatorAdd all your pets with their kg and see your whole base income→