Calculator

Trade-up calculator

Fill the contract and see every possible result with its odds, float and price, and whether it pays.

10 skins of one grade → 1 skin one grade higher, from the collections of the inputs.

Inputs: Skinport reference prices. Outcomes: 30-day sales medians with at least 3 sales. The shortlist uses the same model, before fees. A reference price does not guarantee stock at your chosen float. Enter actual costs in USD; leave blank to use the reference. Estimates are not guaranteed profits.

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Trade-up ideas to verify

Reference-price estimates for single-skin contracts. Open one to enter actual purchase costs, floats and your selling fee. Prices can change between this list and the calculator.

Inputs use Skinport reference prices, which may include suggested values when no listing is available; only skins with 10+ sales in 30 days qualify. Outcomes use 30-day sales medians. Before fees. Sales volume does not guarantee enough listings at the required float or price.

FAQ

How is the output float calculated?

Each input's float is turned into a position within that skin's own range, (float − min) / (max − min). The ten positions are averaged, and the outcome gets that same position within its range: min + average × (max − min).

How are the odds of each outcome decided?

Each input carries an equal share of the odds, spread over the next-grade skins of its collection. Seven inputs from one collection give that collection 70% of the outcomes.

Can you trade up Covert skins into a knife?

Yes, since October 2025: five Covert skins give a knife or gloves from the case of one of the inputs. Five StatTrak™ Coverts give a StatTrak™ knife (no gloves).

The float formula follows community testing; Valve hasn't published it. Normal outcomes use 30-day sales medians; StatTrak uses snapshot reference prices. These are estimates, not executable purchase or sale offers.