What You Should Know How Much Does A Spider Weigh

how much does a spider weigh

According to Wikipedia, Spiders are small air-breathing arthropods with eight legs. They are chelicerae with fangs and have the ability to inject venom apart from the spinnerets that give silk. Spiders are the largest arachnids order.

While many categorize them like insects, they come in different species, types and will manifest similar or different traits. Some have very lethal poison, while others will leave you with only mild symptoms in case, they bite you.

So how much does a spider weigh?

Well, hardly do people think of the weight of a spider. Even so, with various research conducted on different living organisms. Research shows us that due to their different types and sizes too, spiders will come with a wider range of weight.

They have been categorized as weighing between 0.05 grams to 170 grams. Indeed, the largest of all the spiders, which are the goliath birdeater (Theraphosa Blondi), originates from Latin America and weighs around 150 grams (5.3 oz) when fully grown.

It also has one of the widest leg-spans of about 30 centimeters (12 in). With that said, let us take a look at other vital spider tips that anyone should know.

Types of Spiders

The one thing that I want to say about the type of spiders is this. There is a wide range of spiders that, if we start to list them, we might not get to end right away. That’s why for the sake of this post, I will give you at least 4 types of spiders. Take a look.

Black Widow

The black widow, like the name suggests, is black in color. It is shiny and comes with a telltale red in the underside of its abdomen. The abdomen is also shaped like an hourglass. However, the young black widow spider will appear orange or white in color.

They will change as they age. The spider species is common in the United States and also within the southern regions of the American content where you will find warmer temperatures in most times.

Brown Recluse

The brown recluse spider is commonly known for its reclusive behavior. The spider is a common sight in the outdoors and, as the name suggests, is brown in color. The spider can be light to dark brown and has a characteristic dark brown marking that resembles a violin on their back.

This spider is mostly found around the central Midwest of the U.S. and will be a pretty sight once you land in Ohio all the way to Nebraska and also the southward through the state of Texas and Georgia.

House Spiders

Unlike the brown reclusive outdoor spider, the house spider, like the name suggests, is often found indoors. House spiders are yellowish-brown and have an elongated abdomen.

Even so, research has it that their color can vary a lot. Following its name, this spider species is commonly encountered indoors and, as such, is found worldwide. So don’t be surprised when you get this inside your home.

Jumping Spider

The jumping spider comes in a compact shape and has very short legs. As such, they are often mistaken for the black widow spider.

Even so, the jumping spider is usually black in color and comes covered with a very dense hair or sometimes scales. The hair and the scales can be brightly colored, giving the spider a silky appearance. The jumping spider is often found throughout the United States.

Why Measure the Weight of a Spider

When we started with this post, we talked about the weight of a spider. Now, why should you measure the weight of a spider?

It is highly unlikely that in your neighborhood, everyone would want to measure the weight of a spider. Even so, for the sake of studies and research, the weight of different spiders have been taken over and over again.

Taking such data will help in documentation, features studies, identification of the spider, and also in developing a reliable database on spiders.

As such, taking the weight of a spider will also determine the following:

  • Age
  • Type
  • Health
  • Type

You can, therefore, appreciate why the weight of a spider has been taken by researchers over the duration that we have had. To help in the same, and if you want to answer how much does a spider weigh, you can also begin your own study and research group about spiders.

Where Can People Measure the Weight

Because spiders will range in size, weight, types, and locations where they are found, measuring the weight of a spider, can be very tricky.

Even so, anyone who has access to study laboratories, research foundations, and other institutions where animal research is done can easily measure the weight of the spider.

It is, however, advisable that you record your findings for future comparisons, studies, and references, among many other things.

This will contribute a lot to the conservation of this species and also in spreading the knowledge about spiders.

Without the spiders, having a complete eco-system can be very tricky. That’s why you are advised that you should study every wild animal so that the relationship between humans and these animals can improve.


If you were asking yourself how much does a spider weigh, now you have the answer at your fingertips. With that said, let me say this.

While taking the exact weight of a spider can be very tricky due to their size, it has been done before. As such, it isn’t impossible. The most important thing is that you understand where you can find the exact measurements.

If you do that, you will realize how important it is. You will also get to understand the spiders better and, as such, develop a great relationship with them, which eventually helps in protecting and caring for them.

As an Amazon Associate I earn from qualifying purchases.