Numbers behind every pace, lift, and matchup.

Both are accurate within ±5% for reps in the 1–10 range. Epley (weight × (1 + reps/30)) tends to read slightly higher above 5 reps; Brzycki (weight / (1.0278 − 0.0278 × reps)) reads slightly lower past 10 reps. For 3–5-rep working sets, the results are essentially identical. The full Squat / Bench / Deadlift calculators surface both side-by-side.

The implied probabilities of both sides of a moneyline always sum to >100% — that excess is called the "vig" or "juice" and is how the sportsbook makes its margin. A typical 2-sided market has 4–5% vig. The full Moneyline + Point Spread calculators surface the vig + true (no-vig) probability explicitly.

The widget shows flat-course pace. Elevation cuts roughly 12–20 sec/mile for every 100 ft of climbing on a steady grade — use the Elevation Adjustment calculator to back-solve grade-adjusted pace, then plug that into the Marathon Pace widget.

Wilks normalizes total weight by bodyweight and sex — but it's been criticized for under-rating very light and very heavy lifters. The IPF GL formula (replaced Wilks 2 in 2020) is now the official IPF-meet standard. The full Powerlifting Total calculator surfaces both alongside the raw total.

Yes — ESPN, Yahoo, CBS, and Fantrax all use slightly different point values. ESPN gives +4 for a HR; Yahoo gives +5. The Fantasy Points calculator lets you pick the league format up-front; weekly totals diverge by ~5–10% between formats.