Add the calculator to any post or page with:

[igs_parlay_odds_calculator]

A free tool from https://internetgamblingsites.net/.

Enter each leg’s odds in any common format — American (e.g. -150 or +200), Decimal (e.g. 1.67), or Fractional (e.g. 2/3) — and the calculator automatically detects the format, multiplies the decimal odds together, and shows the combined decimal odds, combined American odds, total payout, and profit on your stake.

Everything runs client-side in the visitor’s browser. No data is sent anywhere, no external requests, no tracking, no signup required to use it.

Features

Mix and match American, Decimal, and Fractional odds per leg
Add as many legs as you need
Shows combined decimal and American odds
Total payout and profit on any stake
Works in posts, pages, or widget areas
No configuration needed
Lightweight: one CSS file, one JS file, no dependencies

IGS Parlay Odds Calculator

Features