About

What this site does

• Provides calculators for futures PnL, leverage and margin, liquidation, fees and funding, position sizing and risk, options and yield conversions.
• Each tool page documents its formula, the steps to use it, an example under stated assumptions and an FAQ, so results can be checked independently.
• Publishes mechanism-focused guides and coin pages that explain the conventions behind the numbers.

What this site does not do

• No investment advice, trading signals or price predictions.
• No return promises, and no rating, score or testimonial-style rankings.
• It does not replace exchange rules: fee tiers, maintenance margin, funding and liquidation rules are those of your venue.

Methodology and limitations

Tools use common industry formulas (for example, the linear USDT contract PnL and margin formulas). To stay venue-neutral, they do not embed a specific exchange's fee tiers or maintenance-margin ladder.

Estimates do not model slippage, partial fills, how funding actually varies over a holding period, or the liquidation process itself. Differences from your exchange's figures are therefore expected.

All prices shown in examples are hypothetical and exist only to demonstrate the formulas.

Content and sources

Guide and coin pages aim to stay verifiable: for leverage, margin, liquidation and options mechanics we prefer regulator notices, exchange documentation and public technical references.

Some guides list a References section with links to those public sources. Where no directly relevant authoritative source exists, we leave the section out rather than cite something unrelated.

Errors are corrected on the page itself as they are found.

Maintainer

The site is maintained by MrQuants (野马先生), working on in-depth quantitative data analysis, full-scale quant strategy planning and full-stack quant systems engineering.

Content keeps growing: currently 18 guides and 18 coin pages, with the calculator count listed on the All Calculators page.