Eightfold Bet Calculator

Written by: Alex Windsor
Fact checked by Brian Webb  
Updated: July 10, 2024

An eightfold calculator is a necessary tool for estimating returns and profit for a multi-leg (specifically 8-leg) accumulator. As someone reading this, you’ve probably heard of accumulator (acca) bets. No? How about multiples or bet combos? Even if you’ve not heard the latter two, the names point to bets composed of more than one selection.

Two selections (legs) are often called doubles, three-leg parlays (threefolds), fourfolds, and so on. You can add as many legs as the bookmaker allows, but without a calculator, it’s needlessly complicated to estimate returns based on the different variables.

# Odds Win/Place



Looking for more calculation options? You can use our free bet calculator to work out all bet types.

How To Use Our Eightfold Bet Calculator

An eightfold calculator is designed specifically to calculate this type of bet. You can always use a regular calculator to estimate your acca payout, but you’ll get a total figure that does not separate the payout from the profit.

You can calculate the profit yourself by deducting your total stake, but other variables and settings can make things complicated. To cut a long story short, the basic steps of using an eightfold calculator are as follows:

  1. Adjust the odds format
  2. Enter your stake
  3. Set the conditions for your bet (dead heat, each-way, Rule 4)
  4. Input the odds for your selections
  5. See your returns at the bottom

A Note on Terminology

Some of the terms above may sound unfamiliar. You’ve heard them, but you’re not exactly sure what they mean in the context of an eightfold calculation. Here’s a breakdown of each term/function of our eightfold bet calculator.

  • Odds Format – You can adjust the betting lines (odds) based on which format you’re used to reading. American, fractional (UK), and decimal (Europe) are the three available formats.
  • Stake – The “Stake’ field is where you input your bet value. The minimum an 8-fold bet calculator can process is 0.10.
  • Each Way (E/W) – An each way bet in horse racing is a double bet, where you bet for a horse to win or finish (place) in the first 3-4 positions. An 8-fold calculator allows you to set each bet to E/W or as a regular moneyline market.
  • Dead Heat – A dead heat situation is when a winner cannot be settled between 2 or more horses. In such situations, an eightfold calculator will allow you to input the number of horses in the dead heat and divide the odds to adjust them accordingly. A dead heat scenario reduces the odds and with that, the total payout.
  • Win/Place – The win/place column allows you to set the type of outcome for each selection: win, place, or void.

Using Our Eightfold Bet Calculator

Betting Tools’ eightfold bet calculator works exactly as highlighted above. Here’s how to use it:

  1. Set your preferred type of odds format.
  2. Input your stake amount.
  3. Check the box if you want to make an each way bet. If you do so, a column will appear where you have to pick the number of places your horse can finish to settle as a place bet. It can go all the way up to 5.
  4. Set if Rule 4 applies, and in the R4 column, input the number of horses withdrawn.
  5. Check the Dead Heat box if the race ends in a dead heat. In the DH column, select the number of horses that ended in a dead heat race.
  6. In the rightmost column, set the type of outcome to Win, Place, Void/NR, or Lose.

Why You Need the 8-fold Bet Calculator

As you see, if you’re betting on horse racing, the range of variables and terms of your bet can be overwhelming to calculate without a special tool like our 8-fold calculator. You can also use it in other sports, but horse racing and greyhounds require advanced estimations.

Based on the specific terms (R4, DH, E/W) and values (odds, stake size)that you input, Betting Tools’ 8-fold calculator will automatically estimate your returns and profit. All calculations are made instantly and automatically as you adjust the settings on the eightfold calculator.

What is an Eightfold Bet?

An eightfold is an accumulator bet. It accumulates the odds of 8 selections (legs), allowing for a larger potential return even with a minimal stake. It can include selections from horse racing and greyhounds or another sport altogether, such as hockey. Even if a single of the 8 legs loses, the entire acca will settle as a loss.

However, due to the nature of horse and greyhound racing, calculating an eightfold combo payout and profit can be challenging, if not impossible, without our free calculator.

Alex, a ten-year iGaming industry veteran and Managing Editor at BettingTools specializes in sports betting and betting tools. He also provides insightful reviews, ensures the accuracy of all offers, and maintains content quality helping you make informed choices. Combining professional expertise with a passion for football and soccer, Alex ensures we offer you a reliable resource, focusing on betting tools to assist with odds, accas, and other betting strategies.