About OddsDial
See which side the numbers lean to, and why.
OddsDial started with a frustration Eric ran into while reading spread “picks” pages during the NFL season: every one of them gave a side, almost none gave the math, and not one showed its record against the line. The tools he found online were either buried behind paywalls, required sign-ups, or didn't explain their logic — just outputs with no methodology behind them.
So he built something better. OddsDial is a free, no-account-required tool that gives you a lean on every game of the week against the spread, the five numbers it came from, and how often that formula has been right since 2015 — and lets you change the weights yourself and watch the record move.
Eric builds free, methodology-first data tools, including RankFantasy, OddsDial's sibling site for fantasy football ratings on open data. He got tired of sports numbers presented as authority without a formula behind them, and built OddsDial so the formula, the fitted weights and the back-test sit on the same page as the lean.
Part of the Veraino network of free websites.
How it works
Every tool on OddsDial is grounded in a documented, citable method — a published formula, an authoritative standard, or a well-established model. We don't approximate or invent numbers. If we can't cite a primary source for the logic, we don't publish the tool.
The data is nflverse's public record of every NFL game since 1999 (scores, closing lines, rest days, sites), and the power rating follows FiveThirtyEight's published Elo method. The weights are a least-squares fit that is printed on the tool page and refit whenever the data refreshes; a self-check script asserts the fit stays plausible before anything ships. The back-test is on the page too, labelled as in-sample, and it sits near a coin flip — because the closing line is hard to beat, and saying so is part of the method.
Our commitments
- Free, no sign-up required. Every tool on this site is free to use with no account, subscription, or paywall.
- We show our work. Every tool explains its methodology, cites its sources, and surfaces assumptions — so you can verify the logic, not just trust the output.
- Honest about limitations. Where precision is limited or assumptions are required, we say so. Tools compute; they don't replace professional judgment.
- Not betting advice. OddsDial reports a lean and its record. It offers no wagering, links to no sportsbook, and tells no one what to bet.
- Kept current. Tools that use figures that can change over time carry a “last reviewed” date and are treated as an ongoing maintenance responsibility, not a one-time build.
Get in touch
Questions, corrections, or suggestions: hello@oddsdial.com. Eric reads every message personally.