If you are new to disc golf, you may have noticed peculiar numbers that line each disc. These numbers are not just for show. It is important to know how to read disc golf numbers when you are out on a course. Below, you can read a breakdown on what do the numbers on disc golf Frisbees mean.
The Breakdown
The brand Innova created a Flight Ratings System to help players understand what kind of Frisbee they are using and how it will work for them. These four categories are: Speed, Glide, Turn, and Fade.
Speed
The first category, speed, is the degree in which a Frisbee travels through air, and it ranges from 1 to 14. If a disc reads “14,” this is the fastest common class on the market today and, as of 2025, the highest speed class used on PDGA-approved drivers. The faster the disc, the more you will see it cut through the air when thrown at the required velocity. If your disc reads “1,” you can expect the disc to need less launch speed but more loft to carry in wind.
However, the slower the disc, the more accurate it will tend to be at typical recreational arm speeds. Also, if your disc travels with a tailwind, you can expect it to ride farther. Beginners should stick with slower discs, while experienced players can manage higher-speed options.
Glide
The glide measurement is next, and the array goes from 1 to 7. This numbering focuses on loft in flight. For newer players, higher-glide discs can add effortless distance. On the other hand, lower-glide discs can be easier to range in wind or when you want a more controlled finish. In short, the higher the number, the more glide a disc will provide.
Turn
Turn is the third category on the rating system. From +1 to −5, high-speed turn describes the disc’s tendency to move to the right for a right-hand backhand (RHBH) thrower at full power. A rating of +1 resists turning; −5 turns the most. For rollers, −3 to −5 are common picks. Discs that resist turn are generally more predictable in headwinds. If you are learning, some negative turn can help you achieve straighter flights at modest power.
Fade
The last group on the rating system is fade. Ranging from 0 to 5, low-speed fade is the tendency to hook left at the end of flight for RHBH. A rating of 0 stays very straight, while a 5 finishes hard and early. High-fade discs are often chosen for spikes or intentional skips.
What are a Skip and Spike Shot?
A skip shot is when the disc hits the ground and rebounds forward before settling. A spike shot, or spike hyzer, is the kind of shot that descends steeply and lands on an edge, sticking close to where it hits.
Flight Ratings System are Affected by Plastics
Now that you know how the Flight Ratings System works, it is also vital you know what can affect your disc numbers.
Let us start with plastics, shall we? Different plastic blends can shift how a mold flies and how long it holds those numbers. Premium, stiff or clear blends (e.g., Champion/Glow Champion, Opto/Champion-style) typically beat in slowly, tending to stay more overstable longer. Grippy premium blends (e.g., Star, ESP, GStar) season at a moderate rate, adding a touch more high-speed turn over time. Baseline plastics (e.g., DX, R-Pro, KC Pro, XT) beat in the fastest—gaining turn sooner and often losing fade more quickly.
Because wear changes flight, many players carry the same mold in multiple plastics or wear stages to cover a range of lines—from fresh and stable to seasoned and straight.
Throwing By Numbers
Now that you know how to read disc golf numbers, you can go out and purchase the right discs for you. Do not be afraid to test a few before deciding which flight numbers fit your release speed and preferred lines. Find your best speed, glide, turn, and fade combinations, and track how they perform as discs season.
