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Bat Speed to Exit Velocity Calculator

Turn bat speed and pitch speed into an exit velocity.

Exit velocity comes from bat speed, how squarely you barrel the ball, and the speed of the incoming pitch. Set all three and this tool estimates the exit velocity, the smash factor, and how far it carries.

Bat speed → exit velocity Smash factor Carry estimate Contact quality
1. Contact 2. Speeds 3. Result
Contact pending Bat speed pending Pitch speed pending

How square is the contact?

Contact quality sets how much of the bat speed transfers into the ball. Flush contact off the sweet spot produces the highest exit velocity.

Choose a contact quality before moving forward. It sets how much bat speed transfers to exit velocity.
Read the guide

Set bat speed and pitch speed.

Use a bat sensor reading for bat speed. Pitch speed is the incoming pitch — a tee is effectively 0, a live fastball can be 60–90 mph.

Bat speed

-- mph

Youth players often swing 40–55 mph; high school 60–70 mph; college and pro 70–85 mph.

Pitch speed

-- mph

Off a tee, set this to the minimum. Off a machine or live arm, use the incoming pitch speed.

Reset

Result ready.

Check the result card on the right for the exit velocity, smash factor, carry, and contact grade.

Predict carry from EV
Conversion chart

Bat speed and pitch speed to exit velocity

Estimated exit velocity on flush contact, using the simplified collision model. Off-center contact lowers these numbers.

Bat speed Pitch speed Flush EV Context
50 mph 45 mph ~72 mph Youth range. Bat speed is the limiting factor at this stage.
60 mph 55 mph ~87 mph Middle school to early high school with strong contact.
68 mph 65 mph ~99 mph Varsity-level bat speed squaring up a live fastball.
75 mph 75 mph ~109 mph College and pro bat speed. Elite exit velocity territory.
80 mph 90 mph ~119 mph Top-end pro bat speed against premium velocity.
FAQ

Questions about bat speed and exit velocity

How do you convert bat speed to exit velocity?

A common simplified model is exit velocity equals roughly 1.2 times bat speed plus 0.2 times pitch speed on flush contact. So 70 mph of bat speed squaring up a 65 mph pitch produces about 97 mph of exit velocity. Off-center contact lowers the multiplier.

Why does pitch speed affect exit velocity?

When the ball collides with the bat, some of the incoming pitch speed rebounds off the barrel and adds to the exit velocity. That is why the same swing produces a higher exit velocity off live pitching than off a stationary tee.

What is smash factor?

Smash factor is exit velocity divided by bat speed. Flush contact off a pitched ball produces a smash factor around 1.2 to 1.5. A lower smash factor means energy is being lost to off-center contact rather than transferred to the ball.

How accurate is this estimate?

It is a directional model, not a measurement. Real exit velocity also depends on bat mass, barrel construction, spin, and exactly where on the barrel contact is made. Use it to understand the relationship, then confirm with a radar gun.

How do I increase exit velocity?

Increase bat speed and improve barrel accuracy. Bat speed is trained with weighted-bat and speed-stick work, while barrel accuracy comes from tee and machine reps. A bat sensor and a radar gun let you check whether either number is actually moving.