What the tool is for. Plan grid spacing, capital allocation and failure zones before running a range strategy. Decide in advance what happens to the inventory bought below the lower bound, because that side of the grid has no built-in exit.
Grid profit is capped; grid loss is not.
A grid only works when the range, fee drag and inventory plan are honest. If the market trends hard, a neat grid becomes a slow way to accumulate the wrong side. The calculator below is there to price that asymmetry before you switch a bot on.
Start with the spacing, because it is where most grids die quietly. Every level you fill is a buy and a sell, so each completed round pays the fee twice. Once the step between levels gets close to that combined fee plus the spread you actually cross, the grid is working for the exchange rather than for you — and a tighter grid, which feels like more activity and more profit, makes this worse, not better.
Then look at the boundaries, and look at them separately. Above the upper bound the grid simply stops earning and you sit in cash while price walks away; that is an opportunity cost you can live with. Below the lower bound you are still holding every unit the grid bought on the way down, at an average price above the market, with no rule that tells you to stop. The upside per level is fixed by your own spacing. The downside is whatever the market decides. A grid plan without a written price at which you turn the bot off and take the inventory loss is not a plan, it is an assumption that the range holds.
Enter your grid, then re-enter it with the lower bound set 20% below where you actually placed it, and read the capital the calculator now wants. That is the money the grid will ask you for if the range breaks. If you do not have it sitting idle, the grid is already larger than the account can carry.
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Net per grid and the liquidation drawdown are one pair
Read the net-profit-per-grid figure and the drawdown that triggers liquidation together, because they are the two ends of the same trade. The first is what one completed round trip pays after both fees; the second is how far price can fall before the position is closed for you. One arrives in small pieces across many fills, the other arrives once. If tightening the spacing to raise the fill rate has pushed net per grid close to zero, the bot is now carrying that second number for a payout the fees have already taken.
Cross-check the grid against a market that trends
The bot's own profit counter is the figure to distrust: it books every completed round trip while the inventory bought below the range sits in a separate, unrealized column. Add the two together before deciding the grid is working. Check the spacing against the fee tier you are actually on and the spread you actually cross on that specific pair, not the maker rate you hope to qualify for, and check the range you assumed against how far the asset has travelled over a window longer than the one that made the range look stable. If the grid only looks good under the calmer window, you have fitted the range to the backtest rather than to the market.
Risk note. Crypto assets are volatile and not suitable for every investor. This page is editorial analysis, not financial advice.