Calculators

This page contains links to a number of calculators for experience points and item manufacture costs based on prices in the Grand Exchange Market Watch.

A note on item costs
All raw materials in the calculators are based on the Grand Exchange Market Watch purchase prices as if the player had bought them on the Grand Exchange, even if those items are easily obtainable from an alternative location.

This is because using the item as a raw material prevents the player from also selling that item on the 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 making a Prayer potion, Snape grass can easily be found on the hobgoblin peninsula south of Falador. However, the player could sell the Snape grass on the Exchange for coins, so using it to make the Prayer potion has effectively cost them  coins, even though they got the Snape grass for free.

The same applies to any ores the player mines, or animal hides they collect instead of buying them. This may sound counter-intuitive, but ignoring it distorts the actual cost of making items and gives incorrect figures.

Requests
If you want to have a new calculator created, feel free to make a request on Talk:Calculators.