FLASHYFLASHY CS2 TOOLS · 2026
CS2 Trade Up Contract Calculator
Plan regular ten-skin contracts or the five-Covert knife and glove trade-up. Select skins, adjust individual floats and prices, calculate collection-weighted outcomes, expected value and potential loss. This tool does not execute contracts or access your Steam inventory.
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Choose contract inputs 0/5
Select one real item per slot and enter its purchase price and float. You can reuse a skin across slots. Souvenir inputs lose their Souvenir status; StatTrak cannot be mixed with normal.
Contract results
Prices are user-entered values in one currency. This calculator does not claim live market prices. Enter an outcome’s sell price to include it in profit calculations. Outcomes without prices make financial metrics incomplete.
| Possible outcome | Estimated probability | Output float / wear | Sell price | Net profit |
|---|---|---|---|---|
| Choose inputs and calculate to see results. | ||||
How trade-up contracts work in CS2
Regular trade-up contracts exchange ten eligible skins of the same rarity for one item of the next rarity, based on their contributing collections. Since Valve’s October 2025 update, five Covert skins can produce a rare special item such as a knife or gloves. Five StatTrak Covert skins yield a StatTrak knife; gloves do not have a StatTrak variant.
Under the commonly documented collection-weighted model, each input gives its collection 1/N of the probability. The collection’s share is then distributed across eligible outcomes. For floats, normalized input positions are averaged before mapping to each output skin’s permitted float range. These calculations are community-derived estimates, not a guarantee from Valve.
Frequently asked questions
Can I combine five red skins to receive a knife?
Yes, for eligible Covert skins from collections with rare-special-item outputs. The possible results depend on the cases represented by the five inputs.
Can I combine StatTrak and regular items?
No. A StatTrak contract requires all inputs to be StatTrak. Regular and eligible Souvenir inputs can be used under the current rules, but Souvenir characteristics are lost.
Does the tool show live Steam Market prices?
No. Type your own observed purchase and sale prices in the same currency. The fee field lets you model Steam or other marketplace deductions.
Are outcomes guaranteed to be profitable?
No. Even a positive estimated expected value can involve a high chance of losing money on a single contract. Check prices, float ranges and eligibility before using any items.
Catalog source: ByMykel CSGO-API (unofficial). Rules reference: CS2 update notes. The calculator is an independent educational tool, not affiliated with Valve.