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formatPotOddsReducedFraction

Reduced integer pot : to_call string from chip counts (e.g. 100, 50 → "2:1"). toCall === 0 → "∞:1".

formatPotOddsReducedFraction(potBeforeCall: number, toCall: number): string

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 to show human-readable pot odds in UIs, flashcards, or logs after rounding real chip amounts. Unlike decimal formatPotOdds, this gcd-reduces rounded integers so 100/50 becomes 2:1 instead of 2.00:1.

How to use​

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

console.log(poker.formatPotOddsReducedFraction(100, 50)); // "2:1"
console.log(poker.formatPotOddsReducedFraction(90, 30)); // "3:1"
console.log(poker.formatPotOddsReducedFraction(200, 0)); // "∞:1"

// From breakeven equity → display ratio → label
const ratio = poker.potOddsDisplayRatioFromBreakevenCallEquity(0.25);
const label = poker.formatPotOddsReducedFraction(300, 100);
console.log({ ratio, label });

Returns string — reduced "p:c" (e.g. 100, 50 → "2:1"). When toCall === 0, "∞:1". Chip inputs are rounded to integers before gcd; throws if rounded toCall is not positive.

See also​

potOddsDisplayRatioFromBreakevenCallEquity · breakevenCallEquity · Pot & EV index