Best CS2 Cases to Open (Expected Value)
Every CS2 case ranked by the estimated average return of one opening.
Which CS2 case should you open? We estimate the expected value of every case from live skin prices and the standard drop odds, and divide it by the price of the case plus a key. It is an estimate, not a prediction: StatTrak™ and marketplace fees are ignored.
No case pays back on average. The average return across 42 cases is 43.2%: for every dollar spent you get back about $0.43 on average.
CS2 cases ranked by expected return
How the expected value is calculated
Expected value = sum of (tier odds × average skin price in that tier of the case). A skin's value is what one unboxed copy is worth on average: each wear's price (cheapest marketplace listing, Steam as fallback) weighted by the chance of rolling that wear, since the float is uniform within the skin's range. The rare tier uses the average over every knife or glove in the case. Return = expected value / (case price + $2.49 key).
| Rarity | Odds |
|---|---|
| Mil-Spec (blue) | 79.92% |
| Restricted (purple) | 15.98% |
| Classified (pink) | 3.20% |
| Covert (red) | 0.64% |
| Rare special item (knife/gloves) | 0.26% |
Not included: StatTrak™ (10% of drops), rare patterns and low floats, and marketplace fees. Real results can differ either way.
FAQ
What is the best case to open in CS2?
By our estimate the eSports 2013 Winter Case currently has the best expected return: about $7.94 per opening for $13.26 (case + key), or 59.9%.
Is opening CS2 cases profitable?
No. None of the 42 cases pays back on average: the average return is 43.2%, and the worst (Kilowatt Case) returns 24.2%. Most of the value sits in very rare knives and gloves.
How is the expected value calculated?
We use the standard odds: Mil-Spec 79.92%, Restricted 15.98%, Classified 3.20%, Covert 0.64%, rare special item 0.26%. Within a rarity every skin is treated as equally likely, and valued at what one unboxed copy is worth on average (each wear's price weighted by its chance). The expected value is divided by the case price plus a $2.49 key. StatTrak™ and fees are ignored, so this is an estimate.
How much is a CS2 case key?
Keys cost $2.49 in the in-game store (USD price; it differs in other currencies). Keys cannot be resold on the Community Market.
Prices updated: Oct 6, 2026, 12:44 PM UTC.










































