Methodology

Where the market data comes from

Live prices, market caps, volumes and price changes on the Live Market and coin pages come from CoinGecko's public API. We refresh the top-100 dataset on a schedule (roughly every 30 minutes) into a single file your browser reads — so the whole page loads fast and no personal data is sent anywhere. The "updated" timestamp on each page shows when the snapshot was last refreshed. Currency conversion uses daily FX reference rates (ECB-style).

How the trend signal is computed

The Signal badge (Uptrend / Downtrend / Ranging / Volatile) is a simple, transparent rule based only on real price data — not a prediction:

• Uptrend — up more than 1% over 7 days and positive over 30 days.
• Downtrend — down more than 1% over 7 days and negative over 30 days.
• Ranging — no clear medium-term direction.
• Volatile — 7-day volatility above ~12% (standard deviation of the 7-day price path). This overrides the others.

It describes what price has already done. It is context, not advice.

How the calculators compute their numbers

Every calculator uses the standard exchange formulas, run locally in your browser:

• Liquidation price (long) ≈ entry × (1 − 1/leverage + maintenance margin). Maintenance margin defaults to ~0.5%; higher leverage moves liquidation closer to entry. See the liquidation calculator.
• Funding cost = notional × funding rate per interval, charged on your full position size and deducted from margin. A per-8h rate annualises to roughly rate × 3 × 365. See the funding calculator.
• Position size = (account × risk%) ÷ stop distance — derived from your stop, not from the maximum margin available.

These are first-order estimates. Real exchanges compound, mark differently and use per-asset maintenance tiers, so treat every figure as the right order of magnitude, not a guaranteed exchange number.

What this is — and isn't

RektCalc is an educational risk toolkit. It shows you the math behind leverage, liquidation, funding and position sizing so you can make informed decisions. It is not financial advice, not a signal service, and not a prediction engine. Nothing here tells you what will happen next — only what the numbers and the rules say right now. Trade only what you can afford to lose. Learn the concepts first in the free academy.