Average Down Calculator

Add each buy and get your blended entry price. Put in the current price too and it shows where the whole position stands. Runs in your browser — nothing is sent anywhere.

Price paid Quantity

What averaging down actually does

Buying more of something that has fallen lowers your average entry, which lowers the price you need to get back to level. It does not make the position safer. You now own more of an asset that has been going the wrong way, so the same percentage move costs you more money than it did before.

The average is weighted by size, not by how many times you bought. Two buys of 0.25 at $60,000 and 0.5 at $52,000 average to $54,666.67 — much closer to the second price, because the second buy was twice as large. That is the number most people get wrong when they do it in their head: they split the difference and land on $56,000.

Questions people ask

Yes. The maths does not care which direction the price moved between buys — enter them in any order and the weighted average comes out the same. The name is just the more common case.

For a true cost basis, add each buy's fee into the price you enter for that row. On a 0.1% fee, a $60,000 buy has an effective price of $60,060. It rarely changes the decision, but it is the number your exchange has recorded.

Five covers almost every hand-managed position. If you have more buys than that, combine the small ones: enter their total spend divided by their total units as a single row, which is exactly what the calculator would do with them anyway.

Other calculators

Crypto profit calculator Profit, ROI and fees on a closed trade DCA calculator What regular buying actually averaged Position size calculator How much to buy for a fixed risk

All nine calculators, or — working the numbers out afterwards is one thing, watching them move is another. TabChart is a free native Windows app that streams live charts straight from 7 exchanges, with no account and no API keys.