Real-time trade-up calculator. Evaluates expected value, output floats, and accounts for Steam fees automatically.
A CS2 trade-up contract takes 10 skins of the same rarity and combines them into a single skin of the next-higher rarity. The output is drawn from the collections of the skins you put in, so the contents of your contract decide which skins you can win and how likely each one is.
The hard part isn't building the contract — it's knowing whether it actually makes money. That means comparing the cost of your 10 inputs against the expected value of every possible output, predicting the float of the result, and subtracting Steam's 13% selling fee. TradeUpX does all of that automatically, across every collection, in real time.
Instead of building spreadsheets by hand, point TradeUpX at a budget and let it rank current trade-up opportunities by expected value and ROI.
Every possible output is weighted by its real drop probability and live market price to give you a true EV — not a best-case guess.
Set your input floats and see the exact wear of the output skin, using the normalized per-skin float formula CS2 actually uses.
ROI and net profit are calculated after the 13% Steam Market fee, so the numbers reflect what you really keep.
Import your CS2 inventory and see which positive-EV trade-up ideas can be built from skins you already own.
TradeUpX covers all four regular trade-up paths plus Covert → Gold contracts. Pick a path to see the best inputs and outputs for it:
Calculate EV, ROI, output float and Steam-fee-adjusted profit before you buy any inputs.
Open calculator guide → SIMPreview every possible output, drop chance and float result for a contract idea.
Open simulator → 🔍Scan every collection for positive-EV contract opportunities ranked by ROI.
Open scanner → 🛠️EV calculator, float predictor, wear reference and Steam fee tools.
Open tools → 📐How float values work and how they decide your output wear.
Read guide → 📚Explore every CS2 collection and the skins inside each tier.
Browse → 🔥A live look at the contracts with the strongest ROI right now.
See today → 🎓A beginner-to-advanced walkthrough of trade-up math, floats, EV and ROI.
Learn more →A trade-up contract combines 10 skins of the same rarity into one skin of the next-higher rarity. The possible outputs come from the collections of your inputs, and the output float is derived from the average float of your 10 skins.
Some are. Profit depends on input cost, output prices, the float you target and Steam's 13% fee. TradeUpX ranks contracts by ROI after fees, so you only see trade-ups where the expected value beats what you pay for the inputs.
The output float equals the average float of your 10 inputs mapped onto the output skin's wear range: outputFloat = avgInputFloat × (maxFloat − minFloat) + minFloat. TradeUpX shows the adjusted output float for every contract.
Yes. Every ROI and net-profit number already subtracts Steam's 13% market fee, so the figures reflect what you actually keep when you sell the output.
Completely free, with no account or login required. Run the scanner, use the calculator and import your inventory at no cost.
Yes — import your CS2 inventory and TradeUpX will surface positive-EV trade-up ideas you can build from the skins in your account.