About these betting tools

Every calculation happens in your browser. Nothing you type is sent anywhere, no account is required, and the tools keep working with the network disconnected. That is a deliberate design choice rather than a technical shortcut: a calculator has no reason to know who you are or what you are betting on.

The bet calculators settle each line individually rather than approximating. A Goliath is computed as 247 separate bets, a Lucky 63 as 63, each one built from the combinations of your selections and settled at full precision before being rounded for display. Non-runners, Rule 4 deductions and dead heats are applied per selection and flow through every line that selection appears in.

The worked example on each calculator page, the table of how many doubles and trebles a bet contains, and the chart alongside it are all generated from the same code that runs the calculator. None of it is typed by hand.

This matters more than it sounds. Pages of hand-written betting arithmetic accumulate errors, and on a site whose entire purpose is getting the maths right, a guide that contradicts its own tool is worse than no guide at all. Generating both from one source makes that class of mistake impossible rather than merely unlikely.

It does not publish tips, predictions or selections, and it never will. The models produce fair prices from inputs you supply; if the inputs are poor the output is poor, and no amount of decimal places changes that.

It also does not claim that any tool here makes gambling profitable or safe. The bankroll simulator exists partly to demonstrate the opposite — that a genuine edge still produces losing runs, over sample sizes far larger than most people bet. If gambling has stopped being something you enjoy, the support page lists free and confidential help.

Settlement rules vary between bookmakers in small ways, particularly around bonus terms, non-runners in multiples and how individual lines are rounded. The calculators follow the standard British conventions, and where a rule genuinely varies — bonuses on the lucky family of bets being the clearest case — the terms are left as inputs for you to fill in from your own bookmaker rather than assumed.

If a calculation here disagrees with a settlement you have received, the bookmaker's own rules are what govern your bet. Always check the settlement rules of the firm holding it.

The bookmaker comparison works on the same principle as the calculators: show the working, and do not claim more than can be supported. Every feature marked as confirmed was read from that operator's own public pages on the date printed at the top of the table, not copied from another comparison site.

Where a check could not be completed, the table says so rather than filling the gap. That makes it visibly incomplete, and it understates several operators whose sites did not expose their help content to an automated read. This is a deliberate trade: a gap you can see is more useful than a tick you cannot trust, and it tells you exactly which claims to verify for yourself.

Promotional terms are the most volatile information on any betting site, which is why every offer carries the date it was read. Treat that date as the important part of the figure. The operator's own current terms are what govern your bet, always.

Betting Tools is run as a UK sole trader based in Bournemouth. The contact page carries the site owner's name, business address and telephone number in full, which is a lower bar than it should be for this sector and a surprisingly uncommon one to clear.

The site takes no bets, holds no customer funds and operates no gambling of any kind, so it holds no Gambling Commission licence and does not need one. It is an information and calculation site, and the only thing it asks of a visitor is that they read the numbers carefully.