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For more information about the current market prices, or to update outdated prices, see Grand Exchange Market Watch.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

Calculator	Description
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.

Cooking

Calculator	Description
Cooking fish	Calculates the profit/loss from cooking fish, based on the assumption that the raw fish are bought.

Crafting

Calculator	Description
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.
Tanning hides	Calculates the profit of tanning various hides.

Farming

Calculator	Description
Trees	Calculates the exp/gold for growing trees
Herbs	Calculates the profit and exp/gold for growing herbs

Firemaking

Calculator	Description
Burning Logs	Calculates the exp/gold for burning logs

Fletching

Calculator	Description
Fletching bows and ammo	Calculates the profit/loss from fletching items when resources are bought.

Herblore

Calculator	Description
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.
Unfinished potions	Calculates the profit/cost of turning herbs into unfinished potions and turning unfinished potions into 3 dose potions.

Magic

Calculator	Description
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.
Wine of Zamorak	Calculates the profit of telekinetic grabbing Wine of Zamorak with the air staff.
Enchanting	Calculates the profit of enchanting various items.

Prayer

Calculator	Description
Bone burial	Calculates the costs of buying and burying bones.
Prayer experience rate	Calculates the speed of gaining Prayer experience.

Runecrafting

Calculator	Description
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.
Runecrafter loss in air running	Calculates the loss per experience point of a runecrafter in air running.
Runecrafting Guild Tokens	Calculates the profit gained using Great Orb Project.

Smithing

Calculator	Description
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.

Summoning

Calculator	Description
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.

Others

Calculator	Description
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.

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 134 coins each. So, using it to make Prayer potions has effectively cost them 134 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.