How many cannonballs do you get from one steel bar in OSRS?

One steel bar makes 4 cannonballs at a furnace. It requires completion of the Dwarf Cannon quest and 35 Smithing.

How is cannonball smithing profit calculated?

Profit per steel bar = (4 x the live cannonball sell price, minus the 2% GE tax) minus the live steel bar buy price. Both items are Grand Exchange tradeable, so this recalculates from real-time prices.

OSRS Cannonball Profit Calculator

One of the most well-known Smithing money makers in Old School RuneScape: buy steel bars, smith them into cannonballs at a furnace, sell the cannonballs. Live profit per bar below, recalculated from real-time Grand Exchange prices every time this page loads.

The recipe this page assumes, so it's checkable rather than a black box: 1 steel bar → 4 cannonballs, at a furnace, after completing the Dwarf Cannon quest with 35 Smithing. Both items are Grand Exchange tradeable, so profit here is pure live price math — no invented numbers, no static table.

Loading live prices…

Why this one, specifically

Most skilling "profit" methods need a real recipe database to compute — dozens of raw materials feeding into a product isn't something a live price feed alone can answer. Cannonballs are the exception: a single fixed 1:4 ratio that hasn't changed in years, with both ends of the trade sitting right there on the Grand Exchange. That's what makes a genuinely live, accurate calculator possible here without guessing at anything.

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FAQ

How many cannonballs does one steel bar make?

4, at a furnace, after the Dwarf Cannon quest with 35 Smithing.

How is the profit calculated?

(4 × live cannonball sell price, after the 2% GE tax) − live steel bar buy price. Recalculated from real-time prices, not a fixed table.