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potOddsRatio

Breakeven call equity from chip counts: toCall / (pot + toCall). Returns 0 when toCall <= 0 or the denominator is non-positive.

potOddsRatio(pot: number, toCall: number): number

Import​

const poker = require('poker-calculations');

ESM (Node):

import { createRequire } from 'module';
const require = createRequire(import.meta.url);
const poker = require('poker-calculations');

When to use​

Use when you know the pot size before your call and the amount you must put in, and want the minimum equity fraction to break even on a one-street call (no rake, no implied odds). Same numeric result as breakevenCallEquity; this name matches older C++ / trainer wording.

How to use​

const poker = require('poker-calculations');

// Pot 100, facing a 50 call → need 50 / 150 ≈ 33.3% equity
const need = poker.potOddsRatio(100, 50);
console.log(need);

// Free call (toCall 0) → 0 (use display helpers for ∞:1 labels)
console.log(poker.potOddsRatio(100, 0));

Pass pot before your call (not including the chips you are about to put in). Compare your estimated win probability against this fraction to decide call vs fold.

Returns number — toCall / (pot + toCall) when toCall > 0 and pot + toCall > 0; otherwise 0.

See also​

breakevenCallEquity · expectedValueCall · formatPotOddsReducedFraction