Pitching Velocity Calculator
Enter a fastball speed and pick an age group to see how it stacks up against typical, competitive, and advanced bands from 10U through the pros — with a safety note on why velocity shouldn’t be the goal for a developing arm.
How you compare
Your velocity vs. the selected age group’s published bands
How the age bands work
Youth and high school fastball speeds are usually reported as overlapping bands rather than a single number, because normal development varies so much at these ages — two pitchers born a year apart can be throwing very differently and both be completely on track. This tool places your velocity inside the closest published band for the age group you pick, from 10U recreational ball up through a college or MLB comparison, so you can see roughly where a number sits without treating it as a verdict on anything beyond the moment it was recorded.
How it’s calculated
Enter a fastball speed in mph and pick an age group; the tool compares it against published band ranges for that group (typical, competitive/advanced, and an elite or D1/pro reference where available) and reports the closest band plus the next band up. No formula converts one age group's number to another — each group has its own independently sourced ranges.
Educational estimate only, not a scouting evaluation, radar-gun replacement, or player-development plan. Radar guns and hand-held units also vary by several mph depending on placement and equipment.
Worked example
A 13–14-year-old (14U) throwing 72 mph lands in the competitive band for that age group (68–75 mph), above the 60–70 mph typical range — a strong number for the age, though development timing varies a great deal and this alone doesn’t predict a future ceiling. The same 72 mph would be well past the 12U bands (typical 50–60, advanced 65–70) if thrown by a player still in that younger division.
Common mistakes
- Comparing a hand-held or phone-app radar reading directly to a Statcast MLB number — equipment and measurement point (release vs. plate) both shift the reading by a few mph.
- Treating a single good reading (or bad one) as a permanent talent verdict instead of a snapshot in a long development curve.
- Pushing for more velocity before pitch-count and rest guidelines are in place — injury risk rises faster than velocity does when max-effort throwing outpaces arm development.
- Using the same age band for every player born in the same calendar year without accounting for how much physical maturity can vary at 12–15.
Where it is used
- Context for parents and coaches reading a radar-gun number without over- or under-reacting to it.
- Travel-ball and high-school tryout conversations about where a number roughly sits.
- Comparing a current reading over time as a player grows, alongside arm-care guidelines rather than instead of them.
Frequently asked questions
What is the average pitching velocity by age?
Rough youth benchmarks (Rapsodo, TopVelocity, and Premier Pitching age charts, which broadly agree with each other): 10U typically throws 40–50 mph, 12U 50–60, 14U 60–70, HS underclassmen 65–75, and HS varsity 75–85. College D1 pitchers are typically 85 mph or faster, and the 2025 MLB league-average four-seam fastball was 94.5 mph (Statcast via Baseball Savant).
When do kids gain the most pitching velocity?
The biggest jumps usually track physical maturity, especially the growth spurt around puberty, when longer levers, more muscle mass, and improved coordination combine — which is exactly why a wide range of "normal" velocities exists at every youth age. Two players born months apart can be at very different points of that growth curve, so velocity gaps at 12U or 14U often shrink or reverse within a couple of years and are not a reliable long-term forecast.
Is 70 mph good for a 13-year-old?
Yes — for a 14U-aged pitcher (roughly 13–14), the typical range is 60–70 mph and 68–75 mph is considered competitive, so 70 mph sits at the top of typical and into the competitive band. For a 12U-aged 13-year-old still in that division, 70 mph would be advanced (65–70 is the top band for 12U). Either way, it is a strong number for the age, though it says more about current development than future ceiling.
How has the MLB average fastball changed over time?
It has climbed steadily: the league-average four-seam fastball was about 91.9 mph in 2008 and reached 94.5 mph in 2025 (Statcast), a gain of roughly 2.6 mph. In 2025, the average right-handed fastball hit 95.0 mph for the first time on record, part of a broader trend of harder-throwing pitchers at every level of the sport.
Should young pitchers train to throw as hard as possible?
Chasing maximum velocity is not the goal at youth ages — arm-care habits and pitch-count/rest limits matter more than a radar-gun number while the arm is still developing. Velocity tends to follow physical maturity and sound mechanics over time, and general pitch-smart-style guidance (rest days scaled to pitches thrown, avoiding max-effort bullpens and showcases back-to-back) exists specifically to protect the growth plates and ligaments in a young throwing arm.
Does hand-timing or a cheap radar gun change these numbers?
Radar guns can vary by several mph depending on unit quality, placement, and whether they capture release speed versus plate speed, so treat any single reading as an estimate rather than a precise measurement. For tracking progress over time, using the same device in the same spot is more useful than comparing one gun's number to another pitcher's number from a different gun.