Eight free American football tools covering score tracking, passer rating, fantasy points, play clock timers, field goal distance calculators, and more. Covers NFL and college (NCAA) formats.
American football basics
American football is played 11-a-side on a 100-yard (91.44m) field with two 10-yard end zones. Scoring: touchdown = 6 points; extra point (PAT) = 1 point; two-point conversion = 2 points; field goal = 3 points; safety = 2 points. The offensive team has 4 downs to advance 10 yards and earn a new set of downs — failing results in a turnover on downs or a punt.
All American football tools
6NFL Passer Rating Calculator
Calculate the official NFL passer rating from completions, yards, touchdowns and interceptions.
Open toolRushing Average & Stats Calculator
Calculate yards per carry, yards per game and fumble rate for a running back.
Open toolFantasy Football Points Calculator
Calculate fantasy football points for any player from their stats, using standard or PPR scoring.
Open toolFootball Win Probability Calculator
Estimate a team's win probability from the score, quarter and possession.
Open toolField Goal Percentage Calculator
Calculate a kicker's field goal percentage and points contributed from attempts and makes.
Open tool4th Down Decision Calculator
Estimate whether to kick, punt or go for it on 4th down based on yards to go and field position.
Open toolFrequently asked questions
How is NFL passer rating calculated?
NFL passer rating (also called quarterback rating) is calculated from four components: completion percentage, yards per attempt, touchdowns per attempt, and interceptions per attempt. Each is scaled to a range of 0–2.375 and averaged, with the result multiplied by 100/6. A perfect passer rating is 158.3. A rating above 100 is excellent; 85–100 is good; 70–85 is average; below 70 is poor for a starting quarterback. The passer rating calculator shows the exact breakdown.
What is the play clock in American football?
The NFL play clock is 40 seconds from the end of the previous play (25 seconds after certain stoppages). The offense must snap the ball before the play clock expires or receive a delay-of-game penalty (5 yards). The play clock creates urgency in offensive play-calling — teams must communicate and align within 40 seconds after every play. A separate game clock tracks the time remaining in each quarter (15 minutes in the NFL).
What is a two-point conversion in American football?
After scoring a touchdown, the scoring team can attempt a two-point conversion — running a live play from the 2-yard line and reaching the end zone again — instead of kicking a standard extra point (worth 1 point). Two-point conversions are used strategically to reach specific score targets (turning a 14-point deficit into a 7-point one with a single score, for example). They succeed approximately 48–52% of the time in the NFL.