Things That Weigh 30 Kilograms (12 Common Examples)

Have you ever thought about how much a kilogram means to us? We are surrounded by measurements of weight and mass, and the kilogram is the foundation of them all.

There are 1000 grams in one kilogram. So, 30 kilograms equals 30,000 grams or 66.1387 pounds.

In this blog post, I’m going to tell you about some common objects that weigh around 30 kilograms.

Objects that weigh 30 kilograms

Baby Crib

baby crib

A baby crib is a small bed designed specifically for young children. It provides a safe and comfortable sleeping space for babies. Typically a baby crib is made of wood or metal.  On average, a standard baby crib weighs between 15 to 30 kilograms.

2 Car Tires

car tire

Car tires are typically made of rubber compounds and reinforced with various materials like steel and fabric. The weight of two tires can vary significantly depending on their size, type, and intended use. 

Generally, the weight of a single car tire is 15 kilograms. So, if you combine the weight of two car tires it would be 30 kilograms.

Wooden Garden Bench

garden bench

Wooden garden benches are often made from durable woods like teak, cedar, or mahogany, while metal benches are commonly constructed from cast iron or aluminum. On average, a typical garden bench can weigh anywhere from 25 to 30 kilograms.

A Double Mattress

full mattress

The dimensions of a double mattress typically measure approximately 54 inches (137 cm) in width and 75 inches (190 cm) in length.

Double mattresses are available in various types, including innerspring, memory foam, latex, or hybrid constructions. These mattresses are designed to provide comfort and support for a restful night’s sleep.  On average, a full mattress can weigh between 25 to 30 kilograms. But some larger mattresses weigh more than 40 kilograms.

Big Speakers


Big speakers are designed to produce powerful and high-quality sound with increased volume and clarity. The weight of a pair of big speakers can vary significantly depending on their size, construction, and the materials used. 

Larger speakers tend to be heavier due to their increased internal components and cabinet size. 

On average, a pair of big speakers can weigh anywhere from 30 kilograms to 35 kilograms or more, with some high-end professional speakers weighing even more.

2 Mountain Bikes

mountain bike

A mountain bike is a type specifically designed for off-road cycling on rough terrain. It typically features a sturdy frame, wide tires with deep treads for better grip, front and rear suspension to absorb shocks, and multiple gears to tackle various inclines. 

The weight of a mountain bike can vary depending on its size, materials used, and additional components. On average, a mountain bike can weigh anywhere between 9 to 15 kilograms (20 to 33 pounds). The approximate combined weight of two mountain bikes would be around 18 to 30 kilograms (40 to 66 pounds).

A Young Male Bear


Bears are adorable and curious creatures, known for their playful nature. On average, a male bear cub can weigh between 5 to 15 kilograms (11 to 33 pounds) in the first few months of life. 

As the cub grows, its weight will increase to 30 kilograms significantly. When they become adults their weight grows up to 260 kilograms.

Labrador Retrievers 

Labrador Retrievers 

Labrador Retrievers are a popular breed of dog known for their friendly and outgoing nature. They are medium to large-sized dogs with a muscular build and a water-resistant double coat. 

Labrador Retrievers can vary depending on factors such as gender, genetics, and overall health. On average, adult male Labradors typically weigh between 30 to 36 kilograms, while adult females generally weigh slightly less, ranging from 25 to 32 kilograms (55 to 70 pounds). 

Female Redunca Fulvorufula

mountain reedbucks

The Redunca fulvorufula scientifically known as Mountain Reedbuck, is a species of antelope native to the mountainous regions of eastern and southern Africa. They inhabit grassy slopes, rocky areas, and high-altitude habitats.

Adult males typically weigh between 45 to 65 kilograms (99 to 143 pounds), while adult females generally weigh slightly less, ranging from 30 to 45 kilograms (66 to 99 pounds).

4 Adult-Sized Bowling Balls

bowling ball

Bowling balls come in various weights to accommodate different bowlers’ preferences and skill levels. The weight of a bowling ball typically ranges from 6 to 16 pounds (2.7 to 7.3 kilograms).

To reach 30 kilograms you need 4 adult-sized bowling balls.

Large Bag of Sugar

sugar bag

A common size for a large bag of sugar is around 5 kilograms to 20 kilograms or more. Some bags may be larger, weighing up to 30 kilograms or even more. 

Weight of A 10-Year-Old Child

10 year old child

At this stage, children are typically in the middle of their middle childhood or pre-adolescent stage of development. Physical growth and development can vary among individuals, but on average, a 10-year-old child may weigh between 25 to 30 kilograms (55 to 66 pounds).


What is an example of 30 kg?

An example of an object that weighs approximately 30 kg is a medium-sized suitcase filled with clothes and other items.

Is 30 kg a good weight?

Whether 30 kg is considered a good weight depends on the context. For some purposes, such as weightlifting or certain sports, 30 kg might be considered light or even very light.

What animal weighs 30kg?

There are several animals that weigh around 30 kg. Some examples include the red fox (Vulpes vulpes), the red panda (Ailurus fulgens), and the beaver (Castor canadensis).

What is the weight of a 30kg object on Earth?

On Earth, a 30 kg object would weigh approximately 294.3 newtons (N) due to the force of gravity. The weight of an object is determined by its mass and acceleration due to gravity, which is approximately 9.81 meters per second squared (m/s²) on Earth.

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