CS2 Trade-Up Calculator
Ten skins of one rarity become one skin of the next tier. Pick your inputs and see the exact outcome odds, the deterministic output float and the expected value at live fee-included prices.
Build a contract
Pick a collection to see its skins.
Add inputs to see outcome odds.
EV values outcomes at the cheapest fee-included ask in the snapshot. Your sale nets less after the venue seller fee.
Today's trade-up board
Updated 9 h ago
10× M4A4 (Mainframe) · FN The 2018 Nuke Collection · Industrial Grade → Mil-Spec → 25% AWP (Acheron) FN $6.75 · 25% MP5-SD (Co-Processor) FN $1.49 · 25% P250 (Exchanger) FN $1.44 · 25% P90 (Facility Negative) FN $1.48 $1.39 $2.79 +101% 100% #2 
10× CZ75-Auto (Copper Fiber) · FN The Train 2025 Collection · Industrial Grade → Mil-Spec → 25% FAMAS (2A2F) FN $2.60 · 25% Glock-18 (Green Line) FN $5.27 · 25% UMP-45 (Late Night Transit) FN $2.44 · 25% XM1014 (Run Run Run) FN $1.62 $1.76 $2.98 +70% 75% #3 
10× CZ75-Auto (Pole Position) · FN The Chroma 2 Collection · Restricted → Classified → 33% FAMAS (Djinn) FN $31.01 · 33% Five-SeveN (Monkey Business) MW $25.00 · 33% Galil AR (Eco) MW $79.51 $29.50 $45.17 +53% 67% #4 
10× P90 (Chopper) · FN The Gamma Collection · Restricted → Classified → 33% P2000 (Imperial Dragon) FN $22.38 · 33% M4A4 (Desolate Space) FN $67.20 · 33% SCAR-20 (Bloodsport) FN $11.95 $23.21 $33.84 +46% 33% #5 
10× USP-S (Ticket to Hell) · FT The Dreams & Nightmares Collection · Restricted → Classified → 33% Dual Berettas (Melondrama) FT $4.71 · 33% FAMAS (Rapid Eye Movement) FT $4.99 · 33% MP7 (Abyssal Apparition) FT $4.68 $3.30 $4.79 +45% 100% #6 
10× AUG (Torque) · FN The Huntsman Collection · Restricted → Classified → 25% M4A1-S (Atomic Alloy) FN $151.69 · 25% SCAR-20 (Cyrex) FN $28.66 · 25% USP-S (Caiman) FN $61.99 · 25% USP-S (Orion) FN $81.60 $57.40 $80.99 +41% 75% #7 
10× M4A1-S (Rose Hex) · FN The Radiant Collection · Mil-Spec → Restricted → 33% Desert Eagle (Mulberry) FN $11.08 · 33% M4A1-S (Glitched Paint) FN $4.95 · 33% USP-S (Bleeding Edge) FN $4.60 $4.90 $6.88 +40% 67% #8 
10× SG 553 (Phantom) · FN The Spectrum 2 Collection · Restricted → Classified → 33% PP-Bizon (High Roller) FN $19.35 · 33% M4A1-S (Leaded Glass) FN $38.93 · 33% R8 Revolver (Llama Cannon) FN $22.21 $19.30 $26.83 +39% 100% #9 
10× P250 (Small Game) · FN The Sport & Field Collection · Mil-Spec → Restricted → 33% Five-SeveN (Heat Treated) FN $14.96 · 33% MP9 (Arctic Tri-Tone) FN $4.55 · 33% UMP-45 (Crimson Foil) FN $3.45 $5.60 $7.65 +37% 33% #10 
10× Glock-18 (Teal Graf) · FN The Overpass 2024 Collection · Mil-Spec → Restricted → 33% AUG (Eye of Zapems) FN $6.68 · 33% Dual Berettas (Sweet Little Angels) FN $7.29 · 33% XM1014 (Monster Melt) FN $5.59 $4.80 $6.52 +36% 100% #11 
10× MP7 (Just Smile) · FT The Kilowatt Collection · Restricted → Classified → 33% M4A1-S (Black Lotus) FT $2.64 · 33% Zeus x27 (Olympus) FT $2.57 · 33% USP-S (Jawbreaker) FT $2.82 $2.00 $2.68 +34% 100% #12 
10× SCAR-20 (Bloodsport) · FN The Gamma Collection · Classified → Covert → 50% Glock-18 (Wasteland Rebel) FN $110.66 · 50% M4A1-S (Mecha Industries) FN $205.97 $119.50 $158.32 +32% 50% #13 
10× Dual Berettas (Melondrama) · BS The Dreams & Nightmares Collection · Classified → Covert → 50% AK-47 (Nightwish) BS $53.23 · 50% MP9 (Starlight Protector) BS $52.72 $40.00 $52.97 +32% 100% #14 
10× Dual Berettas (Shred) · FN The Horizon Collection · Mil-Spec → Restricted → 20% AWP (PAW) FN $6.11 · 20% CZ75-Auto (Eco) MW $5.24 · 20% G3SG1 (High Seas) FN $8.73 · 20% MP7 (Powercore) FN $10.03 · 20% Nova (Toy Soldier) MW $5.37 $5.58 $7.10 +27% 60% #15 
10× XM1014 (Entombed) · FT The Fracture Collection · Classified → Covert → 50% AK-47 (Legion of Anubis) FT $28.54 · 50% Desert Eagle (Printstream) WW $31.00 $23.70 $29.77 +26% 100% #16 
10× Zeus x27 (Olympus) · FN The Kilowatt Collection · Classified → Covert → 50% AK-47 (Inheritance) FN $98.30 · 50% AWP (Chrome Cannon) FN $62.55 $64.30 $80.43 +25% 50% #17 
10× Sawed-Off (Snake Camo) · MW The Dust 2 Collection · Industrial Grade → Mil-Spec → 33% PP-Bizon (Brass) FN $2.05 · 33% M4A1-S (VariCamo) FN $1.20 · 33% SG 553 (Damascus Steel) FN $1.39 $1.24 $1.55 +25% 67% #18 
10× Negev (Lionfish) · FN The Clutch Collection · Restricted → Classified → 33% AUG (Stymphalian) FN $6.89 · 33% AWP (Mortis) FN $9.97 · 33% USP-S (Cortex) FN $24.00 $11.01 $13.62 +24% 33% #19 
10× Desert Eagle (Bronze Deco) · FT The Chroma 2 Collection · Mil-Spec → Restricted → 25% AWP (Worm God) FT $1.90 · 25% CZ75-Auto (Pole Position) WW $1.25 · 25% MAG-7 (Heat) BS $1.13 · 25% UMP-45 (Grand Prix) FT $1.14 $1.10 $1.35 +23% 100% #20 
10× MAG-7 (BI83 Spectrum) · FN The Operation Riptide Collection · Restricted → Classified → 33% Glock-18 (Snack Attack) FN $93.00 · 33% MAC-10 (Toybox) FN $46.98 · 33% SSG 08 (Turbo Peek) FN $42.86 $49.50 $60.95 +23% 33% Each row = 10 copies of the cheapest liquid input (10+ offers at one venue), floats assumed mid-range for the wear. EV values every outcome at its cheapest fee-included ask on 2+ markets, at snapshot prices — selling nets less after the venue seller fee. Best row per collection and tier, top 20 of 4985 scanned. · How we price →
How it works
How a trade-up contract works
You hand over 10 skins of one rarity and receive 1 skin of the next rarity, drawn from the collections of your inputs. The game first picks one of the 10 inputs at random, then draws uniformly from that collection’s next-tier skins, so P(outcome) = inputs from its collection / 10 × 1 / next-tier skins in it. Consumer Grade and Contraband items cannot be used, and StatTrak never mixes with normal. Full rules with a worked example: Full trade-up guide: odds, float math and a real profit check
The float formula (why FN inputs do not mean an FN output)
The output float is deterministic: each input float is normalized within that skin’s own range ((float − min) / (max − min)), the ten values are averaged, and the average is mapped onto the outcome’s range. A Factory New copy of a skin capped at 0.40 normalizes to a much higher value, so contracts built from “expensive FN” inputs routinely produce Minimal Wear outputs. The calculator applies exactly this formula and lets you edit every input float.
What the board shows (and what it does not)
The board scans every single-collection contract: 10 copies of the cheapest input skin per collection, rarity and wear, requiring at least 10 offers at the cheapest venue. Input floats are assumed at the middle of the wear bracket, outcomes are valued at their cheapest fee-included ask quoted on at least 2 markets. It is a snapshot ranking, not a guarantee: asks move, thin listings sell out, and a sale nets less than the ask after the venue seller fee. Positive EV pays off across many contracts, never a single one.
Knife and souvenir contracts
Since October 2025, five Covert skins can be traded up to one Exceedingly Rare item (knife or gloves) from an input collection; since May 2026, souvenir skins are valid inputs and lose their souvenir attributes. This calculator covers standard 10-input contracts; the knife contract math and both rule changes are measured in the guide below. In Russian community slang the mechanic is also called трейд-ап or крафт.
Full trade-up guide: odds, float math and a real profit check →