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 5 d ago
10× P2000 (Coach Class) · BS The Baggage Collection · Industrial Grade → Mil-Spec → 33% Sawed-Off (First Class) FT $29.94 · 33% USP-S (Business Class) BS $27.85 · 33% XM1014 (Red Leather) WW $1,360.48 $72.82 $472.76 +549% 33% #2 
10× SG 553 (Hazard Pay) · FT The 2021 Vertigo Collection · Classified → Covert → 100% M4A1-S (Imminent Danger) WW $3,500.00 $1,449.00 $3,500.00 +142% 100% #3 
10× CZ75-Auto (Copper Fiber) · FN The Train 2025 Collection · Industrial Grade → Mil-Spec → 25% FAMAS (2A2F) FN $3.70 · 25% Glock-18 (Green Line) FN $10.32 · 25% UMP-45 (Late Night Transit) FN $2.75 · 25% XM1014 (Run Run Run) FN $1.83 $2.40 $4.65 +94% 75% #4 
10× Negev (Bulkhead) · FN The 2018 Nuke Collection · Industrial Grade → Mil-Spec → 25% AWP (Acheron) FN $13.85 · 25% MP5-SD (Co-Processor) FN $1.78 · 25% P250 (Exchanger) FN $1.81 · 25% P90 (Facility Negative) FN $1.79 $2.97 $4.81 +62% 25% #5 
10× G3SG1 (Orange Crash) · FN The Chroma 3 Collection · Mil-Spec → Restricted → 20% CZ75-Auto (Red Astor) FN $4.79 · 20% Galil AR (Firefight) FN $13.70 · 20% SSG 08 (Ghost Crusader) FN $14.04 · 20% Tec-9 (Re-Entry) FN $7.55 · 20% XM1014 (Black Tie) FN $3.86 $5.70 $8.79 +54% 60% #6 
10× Five-SeveN (Orange Peel) · MW The Dust 2 Collection · Industrial Grade → Mil-Spec → 33% PP-Bizon (Brass) FN $2.80 · 33% M4A1-S (VariCamo) FN $1.68 · 33% SG 553 (Damascus Steel) FN $1.84 $1.40 $2.11 +51% 100% #7 
10× M4A1-S (Rose Hex) · FN The Radiant Collection · Mil-Spec → Restricted → 33% Desert Eagle (Mulberry) FN $13.35 · 33% M4A1-S (Glitched Paint) FN $6.00 · 33% USP-S (Bleeding Edge) FN $5.62 $5.53 $8.32 +51% 100% #8 
10× AUG (Triqua) · MW The Spectrum 2 Collection · Mil-Spec → Restricted → 20% CZ75-Auto (Tacticat) MW $1.29 · 20% MP9 (Goo) FN $15.22 · 20% SG 553 (Phantom) FN $2.98 · 20% UMP-45 (Exposure) FN $2.43 · 20% XM1014 (Ziggy) MW $1.12 $3.20 $4.61 +44% 20% #9 
10× P250 (Gunsmoke) · MW The Inferno Collection · Industrial Grade → Mil-Spec → 50% Dual Berettas (Anodized Navy) FN $15.38 · 50% Tec-9 (Brass) FN $78.70 $32.70 $47.04 +44% 50% #10 
10× M249 (O.S.I.P.R.) · FN The Snakebite Collection · Mil-Spec → Restricted → 20% AK-47 (Slate) FN $14.85 · 20% Desert Eagle (Trigger Discipline) FN $8.60 · 20% MAC-10 (Button Masher) FN $4.45 · 20% Negev (dev_texture) FN $1.71 · 20% P250 (Cyber Shell) FN $5.65 $5.19 $7.05 +36% 60% #11 
10× MP5-SD (Gold Leaf) · FN The Boreal Collection · Mil-Spec → Restricted → 50% Glock-18 (Glockingbird) FN $3.93 · 50% M4A4 (Sheet Lightning) FN $5.61 $3.60 $4.77 +33% 100% #12 
10× P90 (Aeolian Light) · FT The Achroma Collection · Mil-Spec → Restricted → 50% AK-47 (Breakthrough) FT $2.20 · 50% Glock-18 (Trace Lock) FT $0.949 $1.20 $1.57 +31% 50% #13 
10× P90 (Reef Grief) · FN The Ascent Collection · Mil-Spec → Restricted → 50% AK-47 (Midnight Laminate) FN $14.80 · 50% USP-S (Royal Guard) FN $5.40 $7.77 $10.10 +30% 50% #14 
10× Negev (Lionfish) · FN The Clutch Collection · Restricted → Classified → 33% AUG (Stymphalian) FN $8.89 · 33% AWP (Mortis) FN $16.79 · 33% USP-S (Cortex) FN $34.11 $15.72 $19.93 +27% 67% #15 
10× CZ75-Auto (Pole Position) · FN The Chroma 2 Collection · Restricted → Classified → 33% FAMAS (Djinn) FN $47.75 · 33% Five-SeveN (Monkey Business) MW $34.17 · 33% Galil AR (Eco) MW $98.60 $47.60 $60.17 +26% 67% #16 
10× G3SG1 (High Seas) · FN The Horizon Collection · Restricted → Classified → 33% FAMAS (Eye of Athena) FN $40.25 · 33% M4A1-S (Nightmare) FN $233.47 · 33% Sawed-Off (Devourer) FN $16.00 $76.70 $96.57 +26% 33% #17 
10× Zeus x27 (Tosai) · FN The Fever Collection · Restricted → Classified → 33% AK-47 (Searing Rage) FN $19.52 · 33% Glock-18 (Shinobu) FN $20.98 · 33% UMP-45 (K.O. Factory) FN $14.61 $14.80 $18.37 +24% 67% #18 
10× AUG (Momentum) · MW The Prisma Collection · Classified → Covert → 50% Five-SeveN (Angry Mob) FN $64.91 · 50% M4A4 (The Emperor) FN $247.94 $126.20 $156.43 +24% 50% #19 
10× P90 (Neoqueen) · FN The Revolution Collection · Restricted → Classified → 33% AWP (Duality) FN $12.76 · 33% P2000 (Wicked Sick) FN $15.21 · 33% UMP-45 (Wild Child) FN $14.35 $11.50 $14.11 +23% 100% #20 
10× Sawed-Off (Limelight) · MW The Gamma Collection · Restricted → Classified → 33% P2000 (Imperial Dragon) FN $37.07 · 33% M4A4 (Desolate Space) MW $18.25 · 33% SCAR-20 (Bloodsport) FN $13.35 $18.80 $22.89 +22% 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 →