Traditionally, the major difference between football cleats and baseball spikes is how they are made.
Traditional baseball spikes are steel; they have pieces of steel maybe an inch wide and half to three quarter inch deep permanently installed which sink into the turf. Pitchers and catchers in particular need the metal spikes for optimum traction. Metal spikes were outlawed for a few years in high school; I saw many catchers who got hurt because the plastic spikes which replaced the metal would not bite into home plate, and they would fall down on throws to second base as their foot would slide off of home plate.
Football cleats, on the other hand, are usually heavy knobs which screw onto the bottom of the shoe, so different lengths can be installed depending upon the weather and turf conditions. Since football is usually played on grass, the knobs are a good way to get traction.
Outfielders often can wear football cleats while playing baseball, as they usually are out in the grass most of the time. However, they don't provide very good traction for stepping on bases, so infielders often have problems if they try to wear football cleats.
Artificial turf leveled the playing field a bit between the types of shoes. Steel baseball spikes tear up the artificial carpet, so usually only pitchers and catchers will wear true spikes. Turf shoes, rubber soled with lots of knobs, will provide good traction for both football and baseball on artificial turf. Versions of turf shoes are now common for both football and baseball. And football linemen will often wear basketball shoes on artificial turf; the ankle protection of basketball shoes is better than most outdoor oriented shoes.
Baseball cleats are built for forward motion. While curved to grab the ground and force you in the forward movement.
Football cleats are rounded spikes to give you grabbing effects so you can move in all directions.
Golf cleats are spike like too but sharper so you are not tamping down the grass leaving a trail.
You could try I guess, but baseball cleats are made for more sprinting. You'd have to really look at the bottom of the two to see a big difference.
i love to wear footbal cleats for baseball.
the difference is football cleats have more ankle support because you need to juke, and baseball cleats have less weight, and they dig in deeper because they want you to have good traction and be able to run fast in one direction.
so you can wear football cleats for baseball but not baseball cleats for football because not enough ankle support.