Calculators


 * For more information about the current market prices, or to update outdated prices, see Grand Exchange Market Watch.

Calculators are used to determine experience points, and item manufacture costs based on real-time prices in the Grand Exchange Market Watch. Calculators are normally used by players to determine the profits (or losses) they make while levelling up a particular skill. This reduces the need for players to actually go to the Grand Exchange, and determine the current market prices of items. There are a number of calculators available here to help players with their calculations.

Construction

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 * Flatpacks - Parlour, Kitchen and Dining room || Calculates the losses/profits from making flatpacks, in the Workshop of a Player-owned house. Flatpacks are for the Parlour, the Kitchen and the Dining room.
 * Flatpacks - Bedroom || Calculates the losses/profits from making flatpacks, in the Workshop of a Player-owned house. Flatpacks are for the Bedroom.
 * Flatpacks - Costume room || Calculates the losses/profits from making flatpacks, in the Workshop of a Player-owned house. Flatpacks are for the Costume room.
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 * Flatpacks - Costume room || Calculates the losses/profits from making flatpacks, in the Workshop of a Player-owned house. Flatpacks are for the Costume room.
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Cooking

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 * Cooking fish || Calculates the profit/loss from cooking fish, based on the assumption that the raw fish are bought.
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Crafting

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 * Crafting dragonhide armour || Calculates the cost of using dragonhide and dragonleather to craft dragonhide armour
 * Crafting Jewellery || Calculates the cost of gold bars and gems to craft different types of jewellery.
 * Gem Cutting Calculator || Calculates the wealth difference from successfully cutting gems.
 * Crafting Battlestaves || Calculates the profit of making battlestaves from unpowered orbs
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 * Gem Cutting Calculator || Calculates the wealth difference from successfully cutting gems.
 * Crafting Battlestaves || Calculates the profit of making battlestaves from unpowered orbs
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Farming

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 * Trees || Calculates the exp/gold for growing trees
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Firemaking

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 * Burning Logs || Calculates the exp/gold for burning logs
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Fletching

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 * Fletching bows and ammo || Calculates the profit/loss from fletching items when resources are bought.
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Herblore

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 * Barbarian mix || Calculates the costs of making Barbarian mix potions.
 * Potion || Calculates the costs of making standard potions.
 * Herb cleaning || Calculates the costs of cleaning herbs.
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 * Herb cleaning || Calculates the costs of cleaning herbs.
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Magic

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 * Spell costs || Calculates the cost of using a Magic spell, based on the runes used.
 * High Alchemy profits || Calculates the profits from High alching certain items.
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 * High Alchemy profits || Calculates the profits from High alching certain items.
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Prayer

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 * Prayer burial || Calculates the costs of buying and burying bones.
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Runecrafting

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 * Multiple Runes || Calculates the profit/loss of Runecrafting multiple runes.
 * Tiaras || Calculates the profit/loss of making Runecrafting tiaras.
 * Profit/loss per trip || Calculates the profit/loss of making runes per trip.
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 * Profit/loss per trip || Calculates the profit/loss of making runes per trip.
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Smithing

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 * Cannonball smithing || Calculates the profit from making cannonballs using ores and bars.
 * Ore smithing || Calculates the profit from smithing ores into metal bars.
 * Blast Furnace unnoting || Calculates the profit/loss from using the Blast furnace at Keldagrim when using the minigame.
 * Smithing items (using 1 bar) || Calculates the profit/loss from smithing items with 1 bar.
 * Smithing items (using 2 bars) || Calculates the profit/loss from smithing items with 2 bars.
 * Smithing items (using 3 bars or more) || Calculates the profit/loss from smithing items with 3 bars, and from smithing platebodies with 5 bars.
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 * Smithing items (using 1 bar) || Calculates the profit/loss from smithing items with 1 bar.
 * Smithing items (using 2 bars) || Calculates the profit/loss from smithing items with 2 bars.
 * Smithing items (using 3 bars or more) || Calculates the profit/loss from smithing items with 3 bars, and from smithing platebodies with 5 bars.
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 * Smithing items (using 3 bars or more) || Calculates the profit/loss from smithing items with 3 bars, and from smithing platebodies with 5 bars.
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Summoning

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 * Summoning pouches || Calculates the profit/loss of making Summoning pouches, either from the High Level Alchemy spell, or by selling the pouches in the Grand Exchange.
 * Summoning scrolls || Calculates the profit/loss of making Summoning scrolls, by buying the pouches and selling the scrolls in the Grand Exchange.
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 * Summoning scrolls || Calculates the profit/loss of making Summoning scrolls, by buying the pouches and selling the scrolls in the Grand Exchange.
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Others

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 * Kingdom management || Helps with the management of the Kingdom of Miscellania.
 * Combat level || Uses a formula contained in the Combat template to determine a player's combat level.
 * Health per Gp || Calculates the cost of food based on the amount healed.
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 * Health per Gp || Calculates the cost of food based on the amount healed.
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Opportunity costs
All raw material costs used in the calculators are based on real-time prices from the Grand Exchange Market Watch. This assumes that the player is buying items from the Grand Exchange, even if these items are easily obtainable from alternative locations.

This is due to the fact that using an item as a raw material prevents the player from selling that item on the Grand Exchange, thereby effectively "costing" the player the amount of money they could have sold it for. In economics, this concept is called Opportunity cost and should be considered when calculating the actual cost using raw materials.

For example:
 * When Prayer potions are made, Snape grass is one of the ingredients (raw material) used for making this potion. Snape grass can easily be found on the Hobgoblin peninsula, south-west of the Crafting Guild, and south of Falador.  However, the player could sell the Snape grass on the Grand Exchange for  coins each.  So, using it to make Prayer potions has effectively cost them  coins for each potion made, even though they got Snape grass for free.

The same concept applies to any ores mined, or any animal hides collected instead of being bought from the Grand Exchange. This may sound counter-intuitive, but ignoring it distorts the actual cost of making items and gives incorrect figures.

Requests
If new calculators are needed, feel free to make a request on the talk page. Calculator "contributions" are also welcome.