CS2 Trade-Up Calculator

TradeUpX handles every calculation a serious CS2 trader needs:

TradeUpX automates a process that would take hours manually:

1. Load skin catalog: Full CS2 skin database with per-skin float ranges (min/max), updated with game patches.
2. Load cached prices: Loads the verified market dataset, converts its USD estimates to EUR and caches them for fast scans.
3. Enumerate all contracts: Every valid 10-skin combination across all collections and wear tiers — thousands of possibilities evaluated in seconds.
4. Calculate EV: For each contract: EV = Σ(prob_i × price_i × 0.87) − total_input_cost
5. Calculate float: Applies CS2's exact normalized float formula using each skin's actual min/max range.
6. Rank and display: Sort by ROI, EV, or cost. Filter by rarity, wear, or minimum ROI threshold.

Scan time depends on the selected mode and upstream data availability. The application checks its cached price data on a 24-hour refresh cycle.

The most common mistake in DIY spreadsheets and basic tools: averaging raw floats instead of normalized floats.

CS2's actual formula normalizes each input float to that skin's specific range before averaging:

Example error: AK-47 Safari Mesh has a float range of 0.06–0.80. A raw float of 0.20 normalizes to (0.20−0.06)/(0.80−0.06) = 0.189. A simple averager treats it as 0.20. That error compounds across 10 inputs and produces wrong output float predictions — sometimes off by an entire wear tier.

TradeUpX applies per-skin normalization for every calculation so the displayed output-float estimate follows the contract formula and each skin's recorded float bounds.

Mixed Float Mode (Filler Skins)

Combine a main skin (at your desired float) with cheap filler skins at very low floats. This lets you hit a specific avg_adjusted target — typically to engineer Factory New output — without paying FN prices for all 10 inputs. TradeUpX finds every valid main/filler split automatically and ranks by cost.

StatTrak Calculator

Toggle StatTrak mode to scan only ST contracts using cached StatTrak estimates for both inputs and outputs. StatTrak ROI dynamics can differ significantly from normal items, so compare both modes and verify current listings.

Smart Float Scanner

Input a target output float range (e.g. "I want FN output, float 0.00–0.05") and TradeUpX reverse-engineers the input float requirements, then shows every collection where that's achievable at the lowest cost.

Inventory Scanner

Upload your CS2 inventory as a CSV. TradeUpX identifies profitable contracts using skins you already own — no additional buying required. Great for finding hidden value in existing inventories.

Gold Trade-Ups

Covert → Gold contracts use 5 Covert skins to produce 1 Gold Special Item. Normal scans can include knives and gloves; StatTrak scans are knife-only. See the Covert to Gold guide for details.

1. Open the scanner at tradeupx.app/scanner — no login required.
2. Select your rarity tier — Mil-Spec, Restricted, Classified, or Covert (knife). Start with Restricted → Classified for the best ROI consistency.
3. Click Start Scan — TradeUpX scans all collections in the selected tier and calculates EV for every contract.
4. Review results — sorted by ROI by default. Each card shows input cost, EV, ROI %, output float, and output skin probabilities.
5. Enable Mixed Float if you want Factory New output — toggle the switch and set your target wear to "Factory New".
6. Filter by budget — use the max cost slider to see only contracts within your budget.
7. Act on results — buy the input skins on Steam market, execute the trade-up contract in-game, sell the output.

The entire process from scan to results takes under 60 seconds.