CS2 knife trade-up calculator
Five Covert skins in, one knife or pair of gloves out. Pick the case to see every finish the contract can return, the chance of each and what the average result is worth against the inputs.
On average you gain $253.61
Example contract, 5 × AUG | Chameleon. There is a 100.0% chance of a result worth at least the $20.35 it costs. The average result is worth $273.96, before selling fees.
Gain on average. On average you gain $253.61.
5 × AUG | Chameleon cost $20.35 to buy. The average result is worth $273.96, $253.61 above the cost before selling fees. There is a 100.0% chance of getting a skin worth at least what the inputs cost.
Every skin in a collection, with the cost to complete it: Collections. Cases and their contents: Cases.
What this contract can return: a knife or gloves
A finish's share depends on how many inputs come from its case pool and how many finishes that pool holds. The output float is the average of the inputs' floats, each scaled inside its own skin's range, then placed inside the output skin's range. Prices are the cheapest listing for the normal (non-StatTrak) skin at the output wear.
| Result | Share | Price at that wear | vs cost |
|---|---|---|---|
| 1.7% | $1,699.84 | +$1,679.49 | |
| 1.7% | $881.09 | +$860.74 | |
| 1.7% | $868.30 | +$847.95 | |
| 1.7% | $650.75 | +$630.40 | |
| 1.7% | $644.67 | +$624.32 | |
| 1.7% | $599.15 | +$578.80 | |
| 1.7% | $531.65 | +$511.30 | |
| 1.7% | $488.58 | +$468.23 | |
| 1.7% | $457.70 | +$437.35 | |
| 1.7% | $453.76 | +$433.41 | |
| 1.7% | $423.06 | +$402.71 | |
| 1.7% | $409.94 | +$389.59 |
Trade-up questions
How does the CS2 knife trade-up work?
Five Covert skins now return one knife or pair of gloves, taken from the case pool of one of the inputs. Only Covert skins from cases that have a knife or glove pool qualify. Five StatTrak Covert skins return a StatTrak knife, and StatTrak gloves do not exist.
Which knives and gloves can I get?
The result comes from the knife and glove pool of the case that one of your inputs comes from. Choose the case above to see its full pool and the price of every finish. Mix skins from several cases and each case adds its own pool to the result.
How is the share of each knife and glove worked out?
For the 5-Covert contract each input contributes one fifth, split across the finishes in its case pool. Valve does not publish any weighting inside a pool, so equal weights are assumed. Unpainted (vanilla) knives are not linked to cases, so a real pool can hold a few more finishes than shown.
How is the output float calculated?
Each input float is first scaled inside that skin’s own float range, the scaled values are averaged, and the average is placed inside the output skin’s range. Averaging the raw floats is the most common mistake, because a skin capped at 0.45 counts differently from one that runs to 1.00. Low-wear inputs cost more, and worn inputs pull every result towards Battle-Scarred.
Can I use Souvenir or StatTrak skins as inputs?
Souvenir skins are accepted in contracts, can be mixed with regular skins, and the output is always a regular skin. Regular and StatTrak skins cannot be mixed in one contract. This calculator covers regular and Souvenir inputs.
Why can I not use a skin I just received?
Skins that arrive in a Steam trade are trade-protected for 7 days and cannot go into a contract until the protection ends. The unlock calendar shows the exact time.