CS2 Trade Up Calculator
Free CS2 trade up calculator with live prices from 12+ marketplaces. Calculate exact profit, float values & odds. Includes reverse trade up lookup. Used by 50K+ traders.
Slot 1
Click to select skin
Slot 2
Click to select skin
Slot 3
Click to select skin
Slot 4
Click to select skin
Slot 5
Click to select skin
Slot 6
Click to select skin
Slot 7
Click to select skin
Slot 8
Click to select skin
Slot 9
Click to select skin
Slot 10
Click to select skin
Possible Outcomes
No Skins Selected
Select skins to see possible outcomes
Calculation inaccuracies may occur. Use at your own risk.
Calculator Statistics
How CS2 Trade Up Contracts Work
Select 10 Input Skins
Choose 10 skins of the same rarity. They can be from different collections, which affects your possible outcomes.
Float Value Calculation
The output float is calculated using the average float of your inputs, scaled to the output skin's float range.
Get Higher Rarity Skin
Receive one skin of the next rarity tier. The specific skin is randomly chosen from all possible outcomes based on collection overlap.
Forward Trade Up Calculator
Select your input skins and instantly see all possible outcomes with their probabilities, expected values, and profit potential.
Reverse Trade Up Finder
Pick your dream skin first, then discover which input combinations can achieve it. Perfect for targeting specific high-value outcomes.
Profit & EV Calculator
See expected value, profit margins, and ROI for every trade up. Uses live market prices from multiple sources.
Float Value Calculator
Precise float calculations using CS2's actual formula. Know exactly what wear condition your output will be.
How CS2 Trade Up Contracts Work
A CS2 trade up contract (sometimes written as trade-up contract) is one of the most powerful mechanics in Counter-Strike 2 for building inventory value. The concept is straightforward: you submit 10 skins of the same rarity into the trade up contract menu, and the game returns one skin of the next higher rarity tier. A trade up calculator or trade up simulator models every possible outcome before you commit real skins. For example, 10 Mil-Spec (blue) skins produce one Restricted (purple) skin, 10 Restricted skins produce one Classified (pink) skin, and so on up to Covert and even knife-tier items.
The output skin is not random across all skins in the game. It is selected from the collections your input skins belong to. If you use 7 skins from the Kilowatt Collection and 3 from the Revolution Collection, there is a 70% chance the output comes from Kilowatt and a 30% chance it comes from Revolution. This collection-based probability system is what makes a trade up calculator essential for anyone serious about profit.
The output skin's float value (wear condition) is determined by a precise formula based on the input item's collection and the output item's float range: Output Float = (Average Input Float x (Max Float - Min Float)) + Min Float. The average float of all 10 input skins is mapped onto the output skin's min/max float range. This is where advanced float maths pays off — small shifts in input floats can push the result across wear tiers (Factory New, Minimal Wear, Field-Tested, Well-Worn, Battle-Scarred), which directly affects the output's market value and payout range.
Understanding these mechanics turns trade ups from gambling into calculated investments. With the right CS2 trade up calculator, you can evaluate every possible outcome, calculate expected profit, and only commit when the numbers are in your favor.
Why Use a CS2 Trade Up Calculator?
Without a trade up calculator (also called a trade up simulator), you are essentially gambling blind. A single CS2 trade up contract can cost anywhere from a few cents to thousands of dollars in input skins. A profit calculator removes the guesswork by showing every possible outcome, its probability, the expected profit, and the exact profit or loss you can expect before you commit a single skin.
Our CS2 trade up calculator uses live market prices and real-time pricing integration from Steam, Buff163, CSFloat, and 9 other marketplaces to deliver real-time insights into every contract's expected value (EV). Built-in marketplace comparison lets you cross-check input cost and output prices across exchanges, while price history charts show how each skin's value has shifted over time. If the EV is positive, the trade up is profitable on average — you can compare collections, test input combinations, and find where risk meets reward.
The reverse trade up finder is especially powerful. Instead of guessing which inputs might produce something valuable, you start with your dream skin and the calculator shows exactly which input combinations can reach it, including filters for trade up compatibility and StatTrak™ variants. Once you find a winning contract you can save your trade ups, share them, and track performance over time as prices move — turning every saved entry into a strategy refinement log experienced traders rely on.
CS2 Trade Up Tips for Maximum Profit
Float values matter more than you think. A Factory New output can be worth 2-10x more than a Field-Tested version of the same skin. Always check what float range your inputs will produce and aim for condition breakpoints between wear tiers (0.07 for FN, 0.15 for MW) — moving a single tier can dramatically expand the payout range.
Use fillers strategically. Filler skins are cheap inputs from collections with no valuable outputs at the target rarity. By mixing expensive "target" skins with cheap fillers, you reduce total input cost while maintaining a chance at the high-value outcome. Every filler creates an odds shift toward the cheaper output, so watch how the trade up simulator's expected value changes with each swap.
Look for collection overlap opportunities. Some collections share rarity tiers where one collection has a very expensive output and the other has cheap inputs. These overlaps create natural profitable trade ups that the community discovers and shares — our calculator surfaces these input combinations and the full set of trade up outcomes for every collection pair.
Consider knife and glove trade ups. Trading up 10 Covert (red) skins from collections that include knives or gloves gives you a chance at the most valuable items in CS2. Use the dedicated knife trade up calculator and glove trade up calculator modes to model these covert trade ups — they're high-risk but can return enormous profit. Always calculate the exact odds and EV before attempting one.
Run StatTrak™ trade ups separately. StatTrak™ trade up contracts must use 10 StatTrak™ inputs and produce a StatTrak™ output, often at a 30-50% premium over regular skins. The simulator handles StatTrak™ trade ups identically to standard contracts but pulls dedicated marketplace prices for the StatTrak™ variants — never mix StatTrak™ and non-StatTrak™ in the same contract.
Advanced Trade Up Simulator Features
Real-time pricing and marketplace comparison. Every input cost and output price refreshes from 12+ exchanges so you always trade against current market data. The simulator's built-in marketplace comparison highlights pricing arbitrage between Steam, Buff163, CSFloat, and other markets, and price history charts reveal how each selected skin has trended over weeks and months — the kind of real-time insights that turn a contract from guesswork into a calculated investment.
Save your trade ups, track performance, and refine your strategy. Sign in with Steam to save your trade ups, share them via unique links, and revisit them later. Each saved entry stores your inputs, output prediction, the marketplace prices at the time, and the resulting profit or loss — giving you a full strategy refinement log to track performance across StatTrak™ and standard variants as the market shifts.
Steam inventory inspection. Import your Steam inventory directly into the calculator to skip manual selection. The inventory inspection feature reads each skin's float, sticker layout, and rarity automatically, so you can build contracts from skins you actually own. If you previously used a browser tool like the TradeUpSpy Chrome extension, the workflow will feel familiar — only faster and integrated with live marketplace data.
Contract optimization and odds shift modeling. Beyond raw EV, the simulator highlights how each input swap creates an odds shift, the expected payout range across all trade up outcomes, and the worst-case profit or loss. This level of contract optimization is what separates calculated investments from blind gambles, and it's the same approach used by the experienced traders who consistently find profitable contracts.
Frequently Asked Questions
What is a CS2 trade up contract?
How is the output float value calculated?
Output Float = (Average Input Float x (Max - Min)) + Min, where Min and Max are the float range of the output skin. This means lower average input floats result in better condition outputs.What is expected value (EV) in trade ups?
Can I trade up StatTrak™ skins?
What is a reverse trade up?
How do I find profitable trade ups?
Which price source should I use?
Can I save my trade up calculations?
What is the best trade up in CS2 right now?
How do trade up fillers work in CS2?
What collections have the most profitable trade ups?
How accurate is the CS2 trade up calculator?
How many skins do you need for a trade up in CS2?
Is the CS2 trade up calculator free to use?
Pro Tips for Profitable Trade Ups
Use low float inputs - Lower average input floats mean better output conditions, which are often worth more.
Check collection overlap - Using skins from collections with expensive outputs increases your chances of profit.
Calculate EV first - Never do a trade up without checking the expected value. Positive EV means profit over time.
Use reverse lookup - Start with your target skin and work backwards to find the best input combinations.
Build Your Dream Loadout
Use profitable trade ups to upgrade your inventory, then design a complete loadout with our free builder.