Trade Up Calculator
Calculate expected value, probabilities, and output floats for CS2 trade up contracts.
$0.00
Select a rarity and add items to see trade-up value
$0.00
Select a rarity and add items to see trade-up value
CS2 Trade Up Calculator
New to trade ups? The CS2 Trade Up Guide covers how contracts work, the float formula, and how to find profitable trade ups.
Plan your CS2 trade up contracts before committing your skins. Select 10 items of the same rarity (or 5 Covert items for knife and glove trade ups), see every possible outcome with exact probabilities, and calculate expected value to find profitable trade ups. Prices sourced from Steam Community Market and CSFloat, updated every 6 hours, with additional data from Skinport, Buff163, and YouPin. Supports all collections, StatTrak items, and every rarity tier from Consumer Grade to Covert.
How CS2 Trade Ups Work
A trade up contract exchanges 10 skins of the same rarity for 1 skin of the next tier. Each input item's collection determines which outputs are possible — stack items from the same collection to increase your odds of getting the most valuable output. The output float is calculated from the normalized average of your input floats, mapped to the output item's float range.
Finding Profitable Trade Ups
A trade up is profitable when the expected value (EV) exceeds your input cost. Use this calculator to compare prices across Steam and CSFloat and find trade ups where the math is in your favor. Look for collections where the next rarity tier has high-value skins, then stack your inputs to maximize the chance of hitting them. StatTrak trade ups can be especially profitable due to higher output prices.
Trade Up FAQ
How do CS2 trade up contracts work?
A trade up contract lets you exchange 10 skins of the same rarity for 1 skin of the next rarity tier. The output item is randomly selected from the next tier across all collections represented in your inputs. For Covert trade ups, you only need 5 items and the outputs are knives and gloves.
How do I find profitable CS2 trade ups?
Compare your total input cost against the expected value (EV) of the trade up. When EV is higher than cost, the trade up is profitable on average. Stack items from the same collection to increase the probability of expensive outputs. Check the “Chance to Profit” stat in the sidebar to see your exact odds.
How is the output float calculated?
CS2 normalizes each input float to a 0–1 scale based on that item's float range, averages them, then maps the result to the output item's float range. Lower input floats generally produce lower output floats, but the exact result depends on the output item's min/max float range.
Can you trade up StatTrak items?
Yes. All 10 inputs must be StatTrak and the output will also be StatTrak. You cannot mix StatTrak and non-StatTrak items in the same trade up contract. StatTrak trade ups often have different EV since StatTrak skins have separate pricing.
What are Covert to knife trade ups?
Covert trade ups require only 5 input items instead of 10. The possible outputs are knives and gloves from a flat pool across all containers — your input collections don't affect which knives or gloves you can receive. These are the highest-risk, highest-reward trade ups in CS2.
Does this calculator work for CSGO trade ups?
Yes. CS2 uses the same trade up system as CSGO. All collections, items, and the float calculation formula are identical. This calculator uses live CS2 prices but the mechanics apply to both games.