What size bat for high school & adult (BBCOR)
Short answer: high school and college baseball require BBCOR −3. Most players swing 32–34 inches (29–31 oz). Reviewed October 23, 2026.
1. The short answer
Age tables put 15–16 at 32–33″ and 17+ near 33–34″. Drop is locked at −3. Pick length for plate coverage you can still whip — plenty of strong hitters stay at 32–33″.
2. Length & drop chart for this age
| Player profile | Length | Drop | Approx. weight |
|---|---|---|---|
| Smaller / contact-first HS hitter | 31–32″ | −3 BBCOR | 28–29 oz |
| Average varsity | 32–33″ | −3 BBCOR | 29–30 oz |
| Tall / power profile | 33–34″ | −3 BBCOR | 30–31 oz |
| Adult amateur / wood-like feel | 33–34″ | −3 BBCOR or wood | 30–31 oz |
Weights assume the listed drop (weight ≈ length − |drop|). Real bats can vary ~0.5–1 oz with grip and manufacturing.
Kitchen fit tests (better than the chart alone)
- Hip test (length): Stand the bat upright beside the player, barrel on the floor. The knob should reach roughly mid-hip. Up at the waist is usually too long; down at the thigh is usually too short.
- Arm / hold test (weight): Have them hold the bat straight out one-handed, parallel to the ground, for about 10 seconds. If the barrel sinks, the bat is too heavy — stay at the same length and go lighter on the drop, or shorten an inch.
- Chest / fingertip check: Knob at center of the chest, bat pointing out along an outstretched arm. Fingertips should reach the end cap comfortably.
- Between sizes? Take the shorter / lighter option. A bat they can control beats one they “grow into.”
3. Drop notes
There is no “lighter BBCOR.” −3 is the rule. If the bat feels heavy, shorten an inch or look at a more balanced (less end-loaded) model — don’t hunt illegal drops.
Full ounce grid: bat drop chart. Height×weight length grid: bat length by height.
4. Stamp / league check
Must show a valid BBCOR .50 mark for NFHS/NCAA play. Youth USA/USSSA stamps are illegal in high school games. See BBCOR / NFHS rules.
Where to shop (compare retailers)
Search links only — we don’t invent prices or stock. Know your length, drop, and stamp first. Amazon links use our Associates tag checkmybat-20 via the site config.
We may earn a commission if you buy through these links, at no extra cost to you. See our affiliate disclosure.
Training reps
Sizing only helps if they get swings. Find cages and indoor facilities:
Browse batting cages near you →
BattingCagesNearMe.com — sister directory to CheckMyBat.
FAQ
- What size BBCOR bat for high school?
Most players use 32–33 inches at −3 (29–30 oz). Tall power hitters may go 34″. - Can high schoolers use USSSA bats?
Not in NFHS games. USSSA is a youth/travel stamp. - Wood or metal?
BBCOR metal/composite is standard for most HS programs; some teams also swing wood for practice or specific leagues. - End-loaded or balanced?
Balanced for bat speed/contact; end-loaded if the hitter already has speed and wants more mass through the ball.
Related
Page reviewed: October 23, 2026