⚖ Potion Decanting Calculator
Find profitable potions to decant. Buy cheap dose variants, decant to 4-dose, and sell for profit. Free decanting at Bob Barter in the GE.
Decants/Hour
~0
Total Potions
0
Profitable
0
How Potion Decanting Profit Works
Potion decanting exploits price inefficiencies between different dose variants of the same potion. On the GE, each dose variant (1-dose, 2-dose, 3-dose, 4-dose) trades at its own price. In theory, a 4-dose potion should cost exactly 4 times what a 1-dose costs. In practice, players prefer 4-dose potions for convenience, so the 4-dose version often trades at a premium.
The strategy is simple: buy whichever dose variant offers the lowest cost per dose, take the potions to Bob Barter near the Grand Exchange, and decant them into 4-dose versions for free. Then sell the 4-dose potions on the GE. Your profit per potion is the 4-dose sell price minus the cost of doses needed to make it, minus the GE tax. All dose variants of a potion share the same buy limit, so the number of potions you can process per 4 hours is limited.
With bank presets and efficient inventory management, you can decant roughly 2,500 potions per hour. The calculator above compares all dose variants for every major potion and shows exactly which variant to buy and how much profit you make per decant. For related methods, try the Herblore calculator or browse herb and potion prices.
Frequently Asked Questions
How does potion decanting work in OSRS?
Bob Barter near the Grand Exchange will decant your potions for free. He combines lower-dose potions into 4-dose versions (or splits them). You can profit by buying the cheapest dose variant, decanting to 4-dose, and selling. All dose variants share the same buy limit on the GE.
Where is the potion decanter NPC?
Bob Barter (Herbs) is located near the Grand Exchange entrance in Varrock. Right-click him and select "Decant" to convert all potions in your inventory to 4-dose. Zahur in Nardah can also decant potions.
Do different potion doses share buy limits?
Yes, all dose variants of a potion share the same GE buy limit. For example, Prayer potion(1), (2), (3), and (4) all share one limit of 2,000 per 4 hours. This is important for calculating how much you can trade.