Which one do you need?
The questions traders actually ask fall into a handful of groups, and each has a tool here.
Working out what happened
A trade is closed and you want the real number, not the one the exchange shows before fees. The profit calculator handles a round trip including both sides of the fee. If you bought the same coin several times and lost track of your entry, the average price calculator gives you the blended cost basis, and the break-even calculator shows the gain needed to recover a drawdown. When it is time to file, the tax estimator sizes the liability on a disposal.
Planning what to do next
The DCA calculator models a fixed contribution on a schedule so you can compare a flat market against a rising or falling one before committing. The price target calculator turns a level you are watching into what it would actually be worth, and the market cap calculator tests whether that level is plausible at all.
Deciding how much to risk
The position size calculator works backwards from the loss you are willing to accept, which is the order professionals use and beginners usually reverse. The stop and target calculator converts those percentages into the prices you will place orders at. For leveraged positions, the futures PnL calculator shows the return on margin and the liquidation calculator shows how little room leverage leaves — at 25x, an ordinary hour in Bitcoin can close the position.
Earning yield rather than trading
The staking calculator compounds a yield over time, the APY and APR converter makes two differently quoted rates comparable, and the impermanent loss calculator shows what providing liquidity costs when the two pooled assets diverge.
Costs, supply and infrastructure
The gas fee calculator converts gwei into dollars for transfers, swaps and mints. The mining calculator weighs revenue against the power bill. The satoshi converter handles the units when the decimal places get unreadable.
Why the fee field matters on every tool
A 0.1% fee sounds like a rounding error. Charged on entry and exit, across forty trades a year, it becomes 8% of the capital being turned over. That is larger than most people's annual return, and it is the reason these calculators ask for the fee rather than quietly assuming zero.
How these tools handle your data
They do not. Every calculation runs as JavaScript in your browser — nothing is sent to a server, nothing is saved, and there are no accounts. Close the tab and the numbers are gone. There is no tracking script and no cookie banner, because there is nothing to consent to.
A note on what a calculator can and cannot do
These tools do arithmetic accurately. They do not know where the price is going, and neither does anyone selling an indicator that claims to. Use them to understand the position you are in and the one you are considering — the decision itself stays yours, and nothing here is financial advice.