Tools

Trader calculators

Work out the profit of a trade before you send any money.

P2P route calculator

Profit between buying and selling.

Fiat → USDT → Fiat

Starting amount (fiat)Buy priceSell priceBuy fee, %Sell fee, %Transfer between exchanges, USDTLoops per day

Coins—

You get—

%—

Per day—

Per month—

Profit—

Funding arbitrage calculator

Yield on the difference in funding rates.

Long + Short

Position size, USDTLONG rate, %LONG interval, hSHORT rate, %SHORT interval, hDays heldFee per trade, %

LONG funding—

SHORT funding—

Fees—

APR—

Total—

Spot arbitrage calculator

Profit on the price gap between exchanges.

A → B

Capital, USDTBuy priceSell priceFee per trade, %Withdrawal fee (in coins)

Coins—

You get—

%—

Profit—

Price difference in %

Quickly get the gap between two prices.

Price APrice B

Difference—

A / B—

B / A—

An estimate: slippage, rate moves during the transfer and ad limits are not included.

Puffit bot on Telegram

The site's sections in the chat, and route tracking on your own thresholds: the bot reports in numbers that a condition is met. It places no orders and asks for no API keys. Access is opened by the bot's owner.

Quick accessLive dataButton controls

Open the bot

Frequently asked questions

Can I trust the result?

The formulas are simple and transparent, but real results depend on slippage and price moves during execution.

Why are there so few routes?

Because we drop the ones whose ad limits do not overlap. Scanners that skip that check show longer lists, but fewer than half of those entries can be executed.

What is the trade window?

The range of sizes a route can actually be put through: the intersection of both ads’ limits with each one’s remaining balance. Below the lower bound the trade is refused; above the upper bound there is not enough volume.

Why do earnings matter more than the percentage?

A percentage says nothing about size. Ten percent of 200 is 20 — not worth opening two trades for. Sorting by money shows what is actually worth doing.

Is the transfer fee between exchanges included?

Yes. The P2P route calculator has a “Transfer between exchanges, USDT” field and the spot arbitrage calculator has “Withdrawal fee (in coins)”. Both are subtracted from the coin amount before the sale.

Available calculators

All calculations run in your browser.

P2P loopBuy USDT with fiat at one price and sell at another, including fees, transfers and loops per day.

Funding arbitrageIncome from the funding rate difference with intervals and four fees.

Spot arbitrageBuy on one exchange, withdraw and sell on another.

Percentage differenceQuick comparison of two prices.

How to use this

Step-by-step guides and the concepts behind the numbers in the tables.

Working out a route in advance instead of trading for nothing

Saw a 2% spread, did the trade, made nothing — the money went into fees that were not on screen. What comes out of a spread and what counts as workable.

What a spread is, and why a wide one is usually a trap

The gap between buying and selling exists everywhere. Two different spreads people confuse, and why a percentage without a size means nothing.

Slippage: why your trade fills worse than you saw

Fees are visible in advance; slippage emerges after the fact and can swallow a route whole. Where it comes from, where it is worst and how to cut it.