SIH App
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Select 10 skins on the left

You use this calculator to simulate the potential odds and exact float values of the output skins of a trade-up contract. You can select input skins from the left pane.

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Add a new skin or copy an already added one
Empty Slot
Add a new skin or copy an already added one
Empty Slot
Add a new skin or copy an already added one
Empty Slot
Add a new skin or copy an already added one
Empty Slot
Add a new skin or copy an already added one
Empty Slot
Add a new skin or copy an already added one
Empty Slot
Add a new skin or copy an already added one
Empty Slot
Add a new skin or copy an already added one
Empty Slot
Add a new skin or copy an already added one

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CS2 Trade Up Calculator

Use our free CS2 trade up calculator to find the most profitable trade up contracts. Enter your input skins and instantly see all possible outcomes, their probabilities, and expected profit or loss. Trade up contracts let you exchange 10 skins of the same rarity for one skin of the next rarity tier. With the right combination, you can trade up to knives, covert skins, and other high-value items at a fraction of their market price. Our calculator shows you exactly which skins to use for the best odds. Whether you're looking for the cheapest knife trade up in CS2, trying to simulate trade up outcomes, or want to understand how CSGO trade up contracts work — this tool does the math for you. Filter by collection, rarity, float value, and price to find trade ups that actually make money.

FAQ

A trade up contract lets you exchange 10 skins of the same rarity for one skin of the next higher rarity. For example, 10 Mil-Spec (blue) skins can be traded up to 1 Restricted (purple) skin. The outcome depends on which collections the input skins belong to.
Yes, but it requires trading up 10 Covert (red) skins, and the knife must be a possible outcome from those collections. This is expensive, but our calculator helps you find the cheapest possible combination.
Enter your 10 input skins (or select them from our database). The calculator analyzes all possible outcomes based on the collections involved, shows the probability of each result, and calculates whether the trade up is profitable based on current market prices.
The float value of your output skin is calculated from the average float of your input skins. Our calculator factors this in, so you can predict whether you'll get Factory New, Minimal Wear, or other conditions.
The core mechanics are the same — CS2 inherited the trade up system from CSGO. However, CS2 has added new collections and skins that weren't available in CSGO, expanding the possible trade up combinations.
The most profitable trade ups change with market prices. Our calculator updates in real time, so you can always find current opportunities. Filter by expected profit to see which contracts offer the best returns.
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Chrome store

Steam Inventory Helper (SIH) is a browser extension and web platform that helps CS2 skin traders compare prices across 28+ marketplaces, check float values, calculate inventory worth, and buy skins below market price.

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