How does a Trade Up contract work in CS2?

Players combine 10 weapon skins of the same rarity tier (e.g. 10 Mil-Spec skins) to receive 1 random skin from the immediately higher tier (e.g. 1 Restricted skin) from the collections represented by the input skins.

How is the outcome skin float value determined?

Valve uses a linear interpolation formula: Outcome Float = (Max Float - Min Float) × Average Input Float + Min Float. This means you can use low-float filler skins to drag down the average float and guarantee Factory New outcomes.

Can StatTrak skins be mixed with regular skins?

No. All 10 input skins must be either non-StatTrak or all 10 must be StatTrak. You cannot mix StatTrak and standard skins in the same contract.

Can you trade up covert (red) skins for a knife or gloves?

No. Covert skins cannot be traded up. Knives and gloves can only be acquired by unboxing cases or buying them directly on the Steam Community Market / third-party marketplaces.

What is a 'filler' skin in CS2 trade-ups?

A filler skin is a cheap, extremely low float skin from a secondary collection added to lower the contract's average float while keeping risk and total capital expenditure minimal.

🔫 Counter-Strike 2 Trade Up Contract

CS2 Trade Up Calculator (Contract Float & Outcome Odds)

Calculate exact weapon skin float values, wear conditions (Factory New / Minimal Wear), and outcome probabilities for Counter-Strike 2 Trade Up contracts.

📦
Weapon Floats & Collection Inputs

Average Input Float Value (0.0000 – 1.0000)

Target Skin Min Float Range

Target Skin Max Float Range

Total Possible Outcome Skins in Collection

Number of Profitable / Target Skins

⚠️ Values modified — Click “Calculate Trade Up Outcome” to update

📊 Calculated Outputs

Predicted Outcome Float

—

Exact skin wear calculated by CS2 engine

Predicted Condition Tier

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Factory New, Minimal Wear, FT, WW, BS

Chance of Hitting Target Skin

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Probability percentage per contract

Max Input Float for Factory New

—

Float cap to guarantee FN condition

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CS2 Trade Up Calculator (Contract Float & Outcome Odds)

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