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.
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Profitable trade-ups today
Contracts of one skin whose outcomes have recently sold for more than the inputs cost today. Open one in the calculator to tune the floats.
- +184%
10× FN
M4A1-S | Solitude
- +140%
10× FN
AWP | Arsenic Spill
- +80%
10× MW
UMP-45 | Warm Blooded
- +67%
10× FN
Glock-18 | Teal Graf
- +67%
10× FT
XM1014 | Black Tie
- +65%
10× FN
Negev | Bulkhead
- +62%
10× BS
Galil AR | Control
- +62%
10× MW
M4A4 | Zubastick
- +57%
10× MW
MAC-10 | Palm
- +57%
10× FN
- +56%
10× FN
CZ75-Auto | Copper Fiber
- +56%
10× FN
P90 | Chopper
Inputs at today's lowest Skinport listing (only skins with 10+ sales in 30 days); outcomes at their 30-day median sale price. Before market fees, so treat it as a shortlist to check, not a guaranteed profit.
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 of the current game; Valve hasn't published it. Prices: lowest Skinport listings.