SportStatNow
Baseball
Football
Basketball
Hockey
Golf
Soccer
Guides

Football

Completion Percentage Calculator

Calculate a quarterback's completion percentage from completions and attempts.

Informational only — not a substitute for official league statistics or professional judgment.

How it's calculated

Comp% = Completions ÷ Attempts × 100 Example: 24 completions on 35 attempts Comp% = 24 ÷ 35 × 100 ≈ 68.6%

Assumptions

  • Counts every pass attempt as officially scored, including spikes and throwaways ruled incomplete — not just clean drop-back throws.

Source: Pro-Football-Reference — Statistics Glossary

Last reviewed: July 2026

Frequently asked questions

What's a good completion percentage in the NFL?

A season completion percentage above 65% is considered solid for a starting quarterback, and above 70% is elite. League-average completion percentage has climbed over time and now typically sits in the low-to-mid 60s.

How is completion percentage different from passer rating?

Completion percentage is only one of the four components in the NFL's official passer rating formula — the others measure yards per attempt, touchdown rate, and interception rate. A quarterback can have a high completion percentage but a modest passer rating if their completions go for short gains with few touchdowns.

Do spikes or throwaways count as attempts?

Yes — under official NFL scoring, a spike to stop the clock counts as an incomplete pass attempt, and a throwaway (even one clearly intended to avoid a sack) is also scored as an incomplete attempt unless it's ruled intentional grounding. Both count against completion percentage.

Is completion percentage reliable over a small sample?

A single game's completion percentage can swing widely on a handful of drops, tipped passes, or a few deep-shot attempts. It's most meaningful evaluated over a full season, where those variations even out.

Related tools

QB Passer Rating Calculator

Calculate the NFL's official quarterback passer rating from completions, yards, touchdowns, and interceptions.

Open tool →Yards per Carry Calculator

Calculate yards per carry (YPC) from rushing yards and carries.

Open tool →Yards per Attempt Calculator

Calculate a quarterback's yards per attempt (Y/A) from passing yards and attempts.

Open tool →