Frequently asked questions

Everything you need to get your league’s almanac up and running.

How do I find my Sleeper league ID?

Open your league in the Sleeper app or on the web. The league ID is the long number in the address bar — for example, in sleeper.com/leagues/1234567890123456789/team the ID is 1234567890123456789. You can paste either that number or the whole link into Fantasy Almanac; it will pull the ID out for you.

Does it cost anything?

No. Fantasy Almanac is free and always will be. It’s supported by unobtrusive advertising on the league pages, which never gates any feature.

Do I need an account?

No account, no signup, no app to install. You paste a league ID and the almanac builds instantly in your browser.

Does it update during the season?

Yes. The site reads live from Sleeper every time the page loads, so standings, scores, playoff odds, previews, and recaps stay current all season. Bookmark the link you generate and it stays up to date.

Is my league data stored anywhere?

No. Everything runs in your browser and reads only public Sleeper data. Nothing about your league is sent to or stored on our servers. For details, see the privacy policy.

What kinds of leagues are supported?

Any Sleeper NFL league: redraft, keeper, and dynasty; standard, PPR, half-PPR, superflex/2QB, tight-end premium, and IDP scoring; auction, snake, and rookie drafts; and leagues with divisions. The math adapts to your league’s actual scoring and roster settings rather than assuming a template.

Why NFL only?

Fantasy Almanac currently focuses on NFL football leagues so the stats, projections, and records are accurate. Support for other sports may come later.

How far back does the history go?

As far as your league exists on Sleeper. The site follows the chain of previous seasons automatically, so a league that has been on Sleeper for several years will show all of them.

How are records and standings calculated?

Win-loss records and standings use Sleeper’s official totals, so they’re correct even for leagues that use median or all-play scoring. Derived stats like value over replacement, draft grades, and dynasty value are computed from your league’s own scoring and roster settings. The stats guide explains each one.

The sportsbook shows odds — is this real betting?

No. The sportsbook is a for-fun feature that translates team strength into Vegas-style odds for bragging rights only. There is no wagering of any kind.

I found a bug or have an idea.

Great — email hello@fantasy-almanac.com. Feedback from leagues with lots of history or unusual settings is especially helpful.