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Four tools

4 in total

None of the four needs an internet connection or pulls in live exchange data: you enter the fee rate and pair rules from your own account pages, and the numbers already filled in are only examples. Everything is calculated in your browser, and nothing you type leaves your device.

cost

Small-trade cost share

Stake, one-way rate, round trips and withdrawal fee in; cumulative fees, total share and break-even movement out. The formulas are printed on the page so you can check them.

parameters

Order parameter checker

Price, quantity and the pair's three parameters in; which rule blocks the order — minimum notional, quantity step or price tick — and a corrected value out.

readiness

Readiness checklist

The three readiness tests split into twelve boxes. Ticks are saved in your own browser, and a verdict appears only once all twelve are ticked.

size

First-trade size ruler

Works backwards from the loss you could absorb, then checks the result against the minimum order value and the withdrawal fee share.

Why only four

More tools is not better. Each of these answers a question that actually comes up in the articles: the cost is unclear, the order is rejected, you cannot tell whether you have practised enough, you do not know how much to commit. Where there is no matching question, there is no tool — a calculator nobody needs just makes a page look busy.

Unclear costs

Buy, sell and withdrawal, added up properly.

Rejected orders

What "invalid quantity" is actually complaining about.

Ready or not

Three tests, none of them your return.