How This Calculator Works

This calculator tells you where a 40-yard dash time would rank among NFL Scouting Combine prospects at a given position. You pick a position and enter your time, and it returns your percentileThe share of combine prospects at that position you would be faster than. An 80th-percentile time is quicker than 80% of the prospects measured at that position. within that position group, places you in a five-tier class, reports your average speed, and compares you to the position's average and all-time record.

One thing to be clear about up front: the comparison group is elite draft prospects — among the fastest, most explosive athletes on the planet — not the general public. This is a scouting-style benchmark, not a health or general-fitness measure, so most people will land at a low percentile, and that is entirely expected.

Step 1: Enter Your Details

• PositionEach position group has its own speed distribution at the combine — wide receivers and cornerbacks are fastest, offensive linemen slowest. Your time is scored only against the group you select. — selects which combine position distribution you are compared against.
• 40-yard timeEntered in seconds (for example, 4.55). The combine standards are electronically timed — see the protocol note on hand timing. — your time for the 40-yard dash, in seconds.

The Test Protocol

For your time to be comparable to combine numbers, the dash should be run the standard way:

• The start:No blocks and no starting gun. The runner sets in a stationary stance and goes on their own; at the combine the clock is triggered by the athlete's first movement. Begin from a stationary three-point (or two-point) stance — no rocking, no false start, no run-up. Explode forward and run through the finish without slowing.
• Distance and surface: A measured 40 yards (36.58 m) on a flat, firm, non-slip surface — a track or turf. Soft or uneven ground slows the time.
• Timing:Combine 40s are recorded electronically. A stopwatch started and stopped by a human reads roughly 0.24 s faster because of reaction delay, so a hand-timed result must be adjusted up before comparing to electronic combine numbers. Combine times are electronically timed. If you hand-timed yourself with a stopwatch, add about 0.24 s before entering it, or you will rank artificially high against the electronic standards.
• Footwear: Spikes or cleats on a good surface are fastest; keep footwear consistent between retests.
• Best of attempts: Take your fastest of two or three attempts, with full recovery between efforts.

How Your Percentile Is Calculated

For each position, the calculator models the spread of combine 40 times as a normal distributionA standard bell-shaped curve described by two numbers: an average (center) and a spread. Combine 40 times within a position cluster tightly enough that a bell curve fits them well. defined by two numbers:

• The average — the published mean 40 time for that position group.
• The spreadHow tightly times cluster around the average. For the fast skill positions this was back-calculated from the NFL's published "sub-4.4" and "sub-4.3" rates; for the big-man and quarterback groups it is an estimate (flagged in the tool). — how widely times vary around that average.

Your time is placed on that curve, and the percentile is the share of the position group that is slower than you:

For example, the average wide receiver runs about 4.52 s with a tight spread. A 4.40 lands near the 89th percentile — faster than roughly 89% of combine receivers — which matches the NFL's own figure that about 11% of receivers have broken 4.40. A faster (lower) time always means a higher percentile.

How Your Tier Is Determined

Your percentile is sorted into a five-tier scale, using the platform's standard tier colors:

• Elite — 90th percentile or higher (top 10% for the position). Rare, draft-headline speed for the position.
• Great — 75th to 90th (top quarter). Clearly above the positional bar.
• Above Average — 50th to 75th. Faster than the typical combine prospect at the position.
• Below Average — 25th to 50th. Slower than the typical combine prospect, but within the field.
• Well Below Average — under the 25th percentile. Below the combine field for the position — expected for most people, since the comparison group is elite prospects.

Average Speed

Alongside your percentile, the calculator reports your average speed across the 40 yards — a straightforward physical fact, not a model:

It is shown in mph, m/s, and km/h. Note this is the average over the whole run; your top speed mid-run is higherThe 40-yard dash is mostly an acceleration test — even elite sprinters are still speeding up at the 40-yard mark. Much of the run is spent building velocity from a dead stop, which pulls the start-to-finish average below peak speed., because the run starts from a dead stop and most of the 40 is spent accelerating.

Position Comparison

This card places your time against two fixed reference points for the position: the group average (how the typical prospect runs) and the all-time record (the fastest ever recorded). Together they frame how your time sits between "typical prospect" and "best in history."

How to Read the Benchmark Table

The table lists all ten position groups with their Average and Record (both published combine figures), plus modeled Top 25% and Top 10% cutoffs. Your selected position is highlighted. Lower times are better, so the columns get harder from left to right. An asterisk marks the positions whose spread is estimated rather than calibrated (see Data Sources).

How to Read the Chart

The chart draws the modeled distribution of combine times for your position as a single bell curve, shaded into the five percentile tiers, with your time marked by a dot. The axis is arranged so faster times are on the right — the Elite band sits on the right, Well Below on the left. If your dot sits far to the left of the bell, you are well off combine pace for that position, which is the norm for non-prospects.

Why the 40-Yard Dash Matters

The 40-yard dash is the signature test of the NFL Combine and the most-watched measure of straight-line explosiveness. Because it is run from a dead stop over a short distance, it is primarily a test of acceleration — how quickly an athlete can build speed — with only the fastest athletes reaching true top speed by the line. That makes it especially relevant for positions that win with a fast first burst.

That said, the 40 is a single, narrow measurement. Scouts treat it as one data point among many, and its predictive value varies sharply by position — it correlates more with on-field success for some roles (offensive line, tight end) than others (wide receiver). Treat a 40 time as a snapshot of straight-line speed, useful for benchmarking and tracking, not as a verdict on athletic ability or potential.

Data Sources and Methodology

• NFL official combine database.As compiled by NFL.com (Feb 2026), covering every combine participant since 2003. Average combine times have drifted faster over those two-plus decades. Position averages and records are taken from the NFL's official database of every combine participant since 2003.
• Percentile model. Each position's times are modeled as a normal distribution. The spread for the skill positions (WR, CB, S, RB, LB, TE) is calibrated to the NFL's published distribution rates — for instance, the receiver spread reproduces the league's figures that ~11% run sub-4.40 and ~1% run sub-4.30. The spread for QB, Edge/DE, DT and OL is estimated (looser published anchors), and those positions are flagged in the tool.
• Average speed is computed directly from distance (36.58 m) and time, with no modeling.
• The fastest 40 in combine history is 4.21 s (Xavier Worthy, 2024).

Limitations and Important Caveats

• Elite comparison group, not the general public. Every percentile here is relative to NFL draft prospects — among the fastest athletes alive. A low percentile is not a fitness verdict; it simply reflects an extraordinarily fast benchmark.
• Percentile is a model estimate.The normal-distribution fit is close for the skill positions but only approximate, especially in the extreme tails and for the estimated-spread positions. It is a calibrated estimate from a normal model, not a direct count, and is least precise in the tails and for the estimated-spread positions.
• Estimated spreads. QB, Edge/DE, DT and OL percentiles rest on an estimated spread; their numbers are rougher than the skill positions'.
• Small, self-selected samples.Quarterbacks in particular often skip the 40, and the ones who run tend to be the more mobile passers — which skews the group. Some groups (notably quarterbacks) are small and self-selected, since many prospects skip the dash.
• Electronic-timing basis.Combine times are electronic. A hand-timed result entered as-is reads ~0.24 s too fast and inflates the percentile; add ~0.24 s first. The standards are electronic; hand-timed results run ~0.24 s faster and must be adjusted before entry.
• Conditions and start matter. Surface, footwear, stance, and start technique all move a raw 40 time, and the calculator takes your entry at face value.
• Single, narrow measurement. The 40 captures straight-line acceleration only — not agility, change of direction, conditioning, or sport skill. Use it for benchmarking and tracking, not as a complete athletic profile.

Disclaimer:
This calculator scores a 40-yard dash against NFL Scouting Combine prospects, an elite population — not the general public — and the percentile is a modeled estimate. Real performance depends on start technique, surface, footwear, timing method, conditioning, and individual variation. A maximal sprint from a dead stop strains the hamstrings, calves, and Achilles tendons; always warm up thoroughly with progressive build-up runs, sprint only on a flat, even, non-slip surface, and stop immediately if you feel sharp muscle or tendon pain. This tool is for general informational purposes only and should not be considered medical, fitness, or training advice. Consult a healthcare provider before performing maximal sprints, especially if you have a pre-existing cardiovascular, muscle, tendon, or joint condition, are over the age of 45, or have been sedentary for an extended period.