Combines every buy into one average entry, break-even after fees, and profit or loss at the current price. The average is weighted by coins bought, so equal-sized buys at lower prices pull it down more than a simple average of prices.
100 USDT at 60,000, 50,000 and 40,000 (no fee): 0.0061667 BTC, average 48,648.65 — not the 50,000 simple average. To bring it to 45,000 with a buy at 40,000 takes 180 USDT.
When you buy the same asset several times at different prices, this calculator combines the buys into one average entry price, a break-even selling price after fees, and the profit or loss at the current price. It also shows how much you would need to buy at a chosen price to move the average to a target.
Enter each buy as its price and the amount of quote currency spent, not the number of coins; the tool converts with amount × (1 − fee) ÷ price. The fee is the percentage charged on each buy and, for the profit figure, on the eventual sale. The average is total spent ÷ total coins, so it is weighted by how many coins each buy actually bought. Equal amounts at lower prices buy more coins and pull the average down further, while smaller buys at low prices can leave the average above the simple average of prices.
Three buys with a 0.1% fee: 200 USDT at 2,400, 200 USDT at 2,000 and 100 USDT at 1,600. Coins = 200 × 0.999 ÷ 2,400 + 200 × 0.999 ÷ 2,000 + 100 × 0.999 ÷ 1,600 = 0.08325 + 0.0999 + 0.0624375 = 0.2455875. Average entry = 500 ÷ 0.2455875 ≈ 2,035.93, which is above the 2,000 simple average of the three prices, because the cheapest buy was also the smallest. Break-even = 2,035.93 ÷ 0.999 ≈ 2,037.97. At a current price of 2,100, selling would return 0.2455875 × 2,100 × 0.999 ≈ 515.22 USDT, a profit of about 15.22 USDT or 3.04%. Bringing the average down to 1,900 with one more buy at 1,600 would take about 179.18 USDT.
The break-even price, not the average, is the level the market has to reach for you to get your money back after paying the fee on the way in and on the way out. The amount-to-target figure shows how quickly averaging down gets expensive: the closer the target is to the new buy price, the larger the buy required, and a target at or below that price cannot be reached at all.
A lower average is not lower risk. Averaging down adds money to a position that is already losing, and the calculator says nothing about whether price will come back. It also ignores spreads and slippage on each buy, withdrawal costs and taxes. If the asset keeps falling, the profit or loss line is the honest number to watch, not the average.
Reference only, not investment advice. Exchange rules (maintenance margin tiers, fee tiers, funding intervals) change; check your exchange before trading.