> For the complete documentation index, see [llms.txt](https://docs.okaylabs.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.okaylabs.io/utilities/rarity-check.md).

# Rarity Check

## Description

Checking an NFT Rarity is determining how valuable it is within its collection. It is important to go through this step before buying an NFT, as usually, the rarer it is, the higher its price is.

The OkayLabs rarity check tool gives you the option to go through any collection and take a look at the NFT ranking.

We made the decision to start off with the main networks, aka **Solana** and **Ethereum**. If you have a request for another network, or a specific collection that you did not find for some reason, contact us [here](https://app.okaylabs.io/contact-us).

This NFTs rarity calculation has been developed by us, using the rarity scoring model. We picked it among others because to us, it is up there with the most reliable ways to evaluate the rarity of NFTs. Precise and straight to the point, it’ll help you make the right decision.

<figure><img src="/files/1GHzQlja4Upi4rLN1opB" alt=""><figcaption><p>Browse through the collections of look for one to see its NFTs rarity</p></figcaption></figure>

<figure><img src="/files/0Hov0T9yOlMivV7JLmju" alt=""><figcaption><p>Look for a specific NFT or filter through them with their attributes</p></figcaption></figure>

<figure><img src="/files/0ccKqMXpJoLDMjyG73gA" alt=""><figcaption><p>Check out the details of each attribute</p></figcaption></figure>

## How it works

To put it simply; we go through the entire collection and calculate the rarity of each trait, and we get the NFT's rarity score from the sum of its traits rarity scores. The score of each attribute itself is determined based on its number of occurrences in the entire collection.

We believe in mathematics in this project, and we do not depend on feelings, vibes or else for Rarity Check.

Because we believe in transparency and honesty, here are our formulas:

{% hint style="info" %}
Rarity score of a trait = Number of NFTs with that trait value / Total number of NFTs in the collection​
{% endhint %}

The total rarity score for a particular NFT is the sum of the rarity scores for all features in that particular NFT.

{% hint style="info" %}
Total rarity score =$$\sum$$ Rarity score of all its traits values
{% endhint %}

The total rarity score for a particular NFT is the sum of the rarity scores for all features in that particular NFT.


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