Multiply a Little League speed by about 1.3 (60.5 ÷ 46) to get its MLB reaction-time equivalent. 60 mph in Little League is like 79 in MLB, 70 is like 92, and 80 is like 105. From a 50-foot mound, multiply by about 1.2. It’s a fun comparison of hitter reaction time, not a prediction of how hard he’ll throw later.
Your son throws 60 in Little League, and someone at the field says, "That’s like 79 in the big leagues." Is that true? Sort of. Here is how the math works, a chart for the most common speeds, and what the number does and doesn’t say about your pitcher.
How the conversion works
Little League pitches from 46 feet. Big league pitchers throw from 60 feet 6 inches. A ball traveling the shorter distance reaches the plate sooner, so the hitter has less time to react. The conversion asks one question: how fast would a big league pitch have to be to give the hitter the same amount of time?
The math is simple. Multiply his speed by 60.5, then divide by 46. That works out to about 1.3 times his speed. From a 50-foot mound, multiply by 60.5 and divide by 50, which is about 1.2 times.
Little League to MLB speed chart
| From 46 feet | MLB equivalent |
|---|---|
| 50 mph | 66 mph |
| 55 mph | 72 mph |
| 60 mph | 79 mph |
| 65 mph | 85 mph |
| 70 mph | 92 mph |
| 75 mph | 99 mph |
| 80 mph | 105 mph |
And from a 50-foot mound (Little League Intermediate, PONY Bronco, and most 11U to 12U travel ball):
| From 50 feet | MLB equivalent |
|---|---|
| 60 mph | 73 mph |
| 65 mph | 79 mph |
| 70 mph | 85 mph |
| 75 mph | 91 mph |
| 80 mph | 97 mph |
Not sure which distance his league uses? Our baseball field dimensions by age lookup has every league, and our guide to pitching mound distance by age explains the jumps.
What the number really means
It means hitters at his level have about the same time to react as a big leaguer facing that MLB speed. That’s it. It does not mean his arm is doing what a big league arm does, and it does not predict how hard he will throw later.
A 12-year-old throwing 70 from 46 feet is putting up a genuinely impressive number, and plenty of 12-year-olds who throw 50 end up throwing harder at 17. Growth, strength, and mechanics change everything between 12 and 18. Our chart of average pitching speed by age shows what is typical at each age, and most 11 and 12-year-olds sit somewhere around 50 to 60 mph.
“Compare him to himself, not to the kid on Instagram.”
An MLB-equivalent number is fun trivia. His own progress is the stat that matters.If he throws hard for his age
Throwing hard young is a real gift, and it comes with responsibility. Harder throwers put more stress on a growing elbow and shoulder with every pitch, which makes pitch counts and rest days matter more, not less. Our free pitch count calculator shows the rest he needs after any outing, and our guide on whether throwing hard is bad for a young arm explains how to protect it.
Never trade a healthy arm for a number. If his elbow or shoulder hurts, he stops throwing and you see a doctor.
Want to know where his speed is coming from?
Upload one video and we’ll break down how his body creates velocity, what’s working, and what to work on first. Free. For any pain, always see a doctor first.
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To convert a Little League speed to its MLB equivalent, multiply by about 1.3 from 46 feet or 1.2 from 50 feet. A 60 mph Little League fastball gives a hitter about the same reaction time as a 79 mph big league pitch, and 70 is roughly 92. It’s a fun way to see why hard-throwing kids are so tough to hit, but it says nothing about his future. Watch his own progress, protect his arm, and let the numbers come. Little things now, big numbers later.
Common questions
What is 70 mph in Little League equal to in MLB?
About 92 mph. A 70 mph pitch from 46 feet gives the hitter roughly the same reaction time as a 92 mph pitch from 60 feet 6 inches.
What is 60 mph in Little League equal to in MLB?
About 79 mph, using the reaction time conversion of 60.5 divided by 46.
How do you convert Little League speed to MLB speed?
Multiply the Little League speed by 60.5 and divide by 46, or about 1.3 times. From a 50-foot mound, multiply by 60.5 and divide by 50, about 1.2 times. Our free Pitch Speed Converter does it for any speed.
Is the Little League to MLB speed conversion accurate?
It’s a rough comparison. It uses mound distances only and ignores how far each pitcher strides toward the plate and how much the ball slows, so treat it as a fun estimate rather than an exact number.
Does a fast Little League pitcher become a fast MLB pitcher?
Not necessarily. Velocity at 12 mostly reflects size and maturity. Many pitchers who throw average speeds at 12 throw much harder later, and some early hard throwers level off. His own progress over time matters more than any comparison.
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