Comparing exit velocity off tee by age requires more than matching a radar number to a birthday. You need to know whether a chart describes tee contact, live pitching, a player's best swing or an average of recorded swings. Below, we distinguish published reference ranges from verified averages, then show how to compare your own readings.
Updated September 15, 2026 · Sources, measurement context and worked examples reviewed.
MLB defines exit velocity as the ball's speed just after bat contact. Off a tee, the ball starts stationary. An age chart cannot tell you how well a hitter recognizes pitches, chooses swings or performs against live competition.
Exit velocity off tee by age: published reference ranges
The following figures come from Bat Digest's published baseball reference chart, checked September 15, 2026. They are not TopVelocity athlete data or verified national averages.
| Source age group | Published range |
|---|---|
| 8–10 years | 40–55 mph |
| 11–12 years | 50–65 mph |
| 13–14 years | 60–75 mph |
| 15–16 years | 70–85 mph |
| 17–18 years | 75–90 mph |
Important source limitation: the publisher describes tee-work maximums but labels the selected column “Average Range.” It does not provide age-specific player counts or a clear calculation method for those ranges. That ambiguity prevents treating them as measured population averages, percentile cutoffs or recruiting requirements. We have not verified a representative national age-by-age dataset under one tee-testing protocol.
Keep those limitations attached when sharing the table. For example, a reference covering ages 13–14 cannot establish a separate average for every 14-year-old. Instead, compare records collected under the same conditions and report exactly what was measured.
Tee, front toss and live pitching are different tests
A tee reading should not silently become a live-game reading on a player profile. The incoming ball, timing task and contact conditions differ. Therefore, keep separate records rather than add or subtract a fixed number of mph.
| Setting | Ball before contact | Record with the result |
|---|---|---|
| Tee | Stationary on a tee | Tee height and location |
| Front toss | Delivered by a tosser | Toss distance and delivery setup |
| Live pitching | Thrown by a pitcher | Pitch type, available pitch speed and game or practice setting |
Similarly, a session peak is not the same statistic as a session mean. A screenshot of one hard hit cannot establish the average of an outing. If the setting or statistic is unknown, mark it unknown instead of forcing a comparison.
How to measure exit velocity off tee consistently
Use readings from your normal, appropriately supervised practice. This checklist is for documenting existing activity—not prescribing extra maximum-effort swings.
- Record the equipment. Include the bat's model, length, weight and certification, plus the ball type. A result from a different bat or ball belongs in a clearly labelled record.
- Keep the setup identifiable. Record tee height and location, device model, units and placement. Follow the manufacturer's setup instructions. For example, Pocket Radar provides sport-specific positioning diagrams.
- Retain all valid readings. Note which contacts the device missed and why any reading was excluded. Do not delete a weak but valid contact just to raise the average.
- Summarize the sample. Report the date, number of recorded contacts, mean, median, peak and range. Keep the individual values so someone can check the calculation.
- Attach video and contact context. Keep available swing video, launch information and notes with that record. Review ball speed alongside what the swing and contact actually looked like.
Worked example: a higher average with the same peak
These readings are invented arithmetic examples. They are not player results, age benchmarks, a testing-workload recommendation or proof that a training program caused a change. Assume both records used the same tee, bat, ball and measurement setup.
| Measure | Record A | Record B |
|---|---|---|
| Readings (mph) | 65, 66, 66, 67, 70 | 67, 68, 68, 69, 70 |
| Mean | 66.8 mph | 68.4 mph |
| Median | 66 mph | 68 mph |
| Peak | 70 mph | 70 mph |
| Range | 65–70 mph | 67–70 mph |
| Recorded contacts | 5 | 5 |
Record A totals 334 mph across five readings; 334 ÷ 5 = 66.8 mph. Record B totals 342; 342 ÷ 5 = 68.4 mph. Thus, the mean differs by 1.6 mph while both peaks remain 70. A peak-only comparison would miss that difference.
However, two small samples cannot establish a lasting gain or explain its cause. First check that the setup and recording rules matched. Then review repeated comparable records rather than turn one session into a prediction.
Exit velocity off tee questions
What is a good exit velocity off a tee for my age?
Start with the source and test conditions, not a universal pass/fail number. The reference chart above has stated limitations. For a more useful personal comparison, track your own consistent setup, full sample and contact quality over time.
Is exit velocity the same as bat speed?
No. Exit velocity describes the ball after contact; bat speed describes the bat's movement. One ball-speed reading does not independently measure bat speed, strength or overall hitting ability.
Can I convert tee exit velocity to live-game exit velocity?
We do not provide a universal conversion. Keep tee and live records separate, and label the device, equipment, sample and statistic. Otherwise, a precise-looking adjustment can hide differences in how the results were collected.
For additional reading, explore TopVelocity's hitting articles.
Connect your hitting records with video review
Want a next step beyond a radar screenshot? Explore the TopVelocity Player Platform's hitting-video analysis tools and compare the current plan details. MechanicsDNA's published features include hitting-video uploads, checkpoint scores, session trends and focus areas.
Keep your exit-velocity record alongside your video. Review the current features and plan inclusions before choosing the option that fits your training.
