FINANCE TOOL

Average Down Calculator

Calculate the weighted average purchase price after an additional purchase, including fees.

FREE ONLINE TOOL

Existing quantityExisting unit cost including past feesAdditional quantityNew unit priceNew purchase fees

Average unit cost

Total quantity

Total cost

1,800

Average = (old quantity × old unit cost + new quantity × new price + new fees) / total quantity

Weighted arithmetic average, not an investment recommendation. Enter prices in the same currency.

STEP BY STEP

How to use average down calculator

IN PRACTICE

10 × 100 + 10 × 80 = 1800; 20 units = 90 each.

GOOD TO KNOW

Weighted arithmetic average, not an investment recommendation. Enter prices in the same currency.