CS2 Trade Up Simulator & EV Calculator
TradeUpX is the most accurate free CS2 trade-up calculator available. It automatically scans every skin collection, calculates expected value (EV) and ROI after Steam's 13% fee, and predicts output float using the exact per-skin normalized formula used by CS2 itself. No spreadsheets, no manual input — open the scanner and see every profitable trade-up ranked instantly.
Open the Free CS2 Trade-Up Calculator →What the CS2 Trade-Up Calculator Computes
TradeUpX handles every calculation a serious CS2 trader needs:
| Output | What it means | Why it matters |
|---|---|---|
| EV (€) | Expected profit in euros | Average return across all possible outputs |
| ROI % | EV as % of input cost | Compares contracts of different sizes fairly |
| Output float | Predicted output skin float | FN output can be worth 5–15× more than FT |
| Output wear | FN / MW / FT / WW / BS | Directly drives output price used in EV |
| Output probabilities | Chance of each skin in pool | Reveals variance and jackpot dependency |
| Steam fee | 13% deducted by default | ROI shown is real take-home, not gross profit |
How the Calculator Works — Step by Step
TradeUpX automates a process that would take hours manually:
- Load skin catalog: Full CS2 skin database with per-skin float ranges (min/max) from the ByMykel CS2 API — updated with every game patch.
- Load live prices: Fetches current Steam market prices via CSGOBackpack, converts USD→EUR, and caches for fast scans.
- Enumerate all contracts: Every valid 10-skin combination across all collections and wear tiers — thousands of possibilities evaluated in seconds.
- Calculate EV: For each contract:
EV = Σ(prob_i × price_i × 0.87) − total_input_cost - Calculate float: Applies CS2's exact normalized float formula using each skin's actual min/max range.
- Rank and display: Sort by ROI, EV, or cost. Filter by rarity, wear, or minimum ROI threshold.
The entire scan runs in under 30 seconds. Results update whenever you click Refresh Prices.
Why Most CS2 Trade-Up Calculators Get Float Wrong
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 uses the correct per-skin normalization for every calculation. That's why output float predictions match actual trade-up results.
Advanced Calculator Features
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 real StatTrak prices for both inputs and outputs. Useful because StatTrak ROI dynamics differ significantly from normal — sometimes better, sometimes worse, depending on the skin.
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.
TradeUpX vs Other CS2 Trade-Up Calculators
| Feature | TradeUpX | Basic Spreadsheets | Other Sites |
|---|---|---|---|
| Correct float formula | ✅ | ❌ | ⚠️ |
| Per-skin float ranges | ✅ | ❌ | ⚠️ |
| Steam fee included | ✅ | Manual | ⚠️ |
| Live prices | ✅ | Manual | ⚠️ |
| Scans all collections | ✅ Auto | ❌ Manual | ⚠️ |
| Mixed Float / Fillers | ✅ | ❌ | ❌ |
| Knife trade-ups | ✅ | ❌ | ❌ |
| Free, no account | ✅ Always | ✅ | Often paid |
How to Use the CS2 Trade-Up Calculator
- Open the scanner at tradeupx.app/scanner — no login required.
- Select your rarity tier — Mil-Spec, Restricted, Classified, or Covert (knife). Start with Restricted → Classified for the best ROI consistency.
- Click Start Scan — TradeUpX scans all collections in the selected tier and calculates EV for every contract.
- Review results — sorted by ROI by default. Each card shows input cost, EV, ROI %, output float, and output skin probabilities.
- Enable Mixed Float if you want Factory New output — toggle the switch and set your target wear to "Factory New".
- Filter by budget — use the max cost slider to see only contracts within your budget.
- 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.