How the average-down calculation works
Your average price is total cost ÷ total quantity. Hold 10 units at 10,000 and buy 10 more at 8,000: (100,000 + 80,000) ÷ 20 = 9,000. This calculator handles several partial buys at once and includes trading fees.
How to use it
- Enter your current average price and quantity. Leave them empty if you are starting a new position.
- Add the buys you plan — price and quantity — and use "Add buy row" for more.
- Enter the fee as a percentage. It is added to the cost of each buy and to the break-even sell price.
- Fill target average and the buy price to learn how many extra units get you there.
Formulas
- New average = (old avg × old qty + price × qty × (1 + fee)) ÷ total qty
- Extra qty for target T = old qty × (old avg − T) ÷ (T − price × (1 + fee))
- Break-even sell price = new average ÷ (1 − sell fee)
Before you average down
A lower average only helps if price recovers. Every extra buy raises both the money at risk and the weight of a single position — often a lot more than expected, because pulling the average down 10% can need roughly as much again at a much lower price. Check the cash required first. For leveraged positions, a new average also moves the liquidation price, so re-check it in the futures calculator.
FAQ
What is the difference between averaging down and pyramiding?
Averaging down means buying more after a price drop to lower your average; pyramiding means adding after a rise. Enter a buy price above your average and the calculator handles pyramiding too.
Does it work for crypto and stocks?
Yes. Use consistent price and quantity units. Fractional quantities are supported.
How are fees handled?
The buy fee is added to each purchase's cost, and the break-even sell price includes the sell fee.
Where are my inputs stored?
Only in this browser and in the page address; nothing is sent to a server. Use Copy result link to share the same inputs.