# Calculator talk:Barrows

## Calculator is incorrect[edit source]

It's pretty blatantly wrong. It gives the chance of getting a barrows item from a single chest as 1/14.57, when it's really around 1/15.01. Simply do (1-24/2448)^7 to get the real droprate.

- This calculator is not meant to compute the probability of getting at least one Barrows item. Like the rest of the calculator (e.g. the runes), it's computing the expected number of Barrows items you get. That number is 7*24/2448, or 1/14.57.
**ʞ***o***o***ɔ*02:17, 2 May 2020 (UTC)- Thanks, gonna leave this up in case anyone else has the same problem. 02:28, 2 May 2020 (UTC)