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breakevenCallEquity

Minimum equity to break even on a one-street call from chip counts: toCall / (potBeforeCall + toCall). Same fraction as potOddsRatio for valid calls.

breakevenCallEquity(potBeforeCall: 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 in trainers, HUDs, or scripts where you have pot before call and to call and need a quick threshold (e.g. “need 33%”). Prefer breakevenCallEquityFromPotOddsDisplayRatio when the user already thinks in pot : call display odds (e.g. 2:1).

How to use​

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

const potBeforeCall = 100;
const toCall = 50;

const need = poker.breakevenCallEquity(potBeforeCall, toCall);
console.log(need); // 1/3

// Same number via potOddsRatio (parameter name `pot` = pot before call)
console.log(poker.potOddsRatio(potBeforeCall, toCall));

// Compare to Monte Carlo or exact equity
const myEquity = 0.42;
console.log(myEquity >= need ? 'call' : 'fold');

Returns number — toCall / (potBeforeCall + toCall) when toCall > 0 and the denominator is positive; 0 when toCall === 0 or potBeforeCall + toCall ≤ 0.

See also​

potOddsRatio · breakevenCallEquityFromPotOddsDisplayRatio · expectedValueCall