While no specific formula for the conversion of engine displacement (cc) to speed (mph) exists, on average 100 cc equals the following mph figures in each vehicle category:
- Riding movers: 100cc = ca. 1 mph
- Sport boats and jet skis: 100cc = 3-7 mph
- UTVs: 100cc = 7-9 mph
- Average cars: 100cc= 5-10 mph
- ATVs: 100cc= 10-12 mph
- Snowmobiles: 100cc = 10-18 mph
- Large motorcycles: 100cc = 10-30 mph
- F1 cars: 100cc= 14-16 mph
- Go-karts: 100cc = 20-30 mph
- Small motorcycles: 30-100 mph
If you wonder where these numbers come from and how it’s possible to convert engine cc to HP, this post is for you.
We at PowerSportsGuide have compiled all you need to know under one roof!
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How to Convert CC to Mph
Converting cc (engine displacement) to mph – does this make any sense?
Many say it would be an apples to oranges comparison since CC refers to the engine’s displacement while MPH is the speed of the vehicle. And due to the different characteristics of each vehicle, there’s no specific formula for the conversion of engine displacement to mph.
However, when you compare vehicles with different engines within a given category you can see a noticeable relationship between engine CC and speed.
To show some examples, we’ve paired the CC and top speed figures of some of the most popular powersport vehicles:
- 250cc = 35-45 mph
- 500cc = 50-60 mph
- 600cc = 60-65 mph
- 700cc = 70-75 mph
- 50cc = 35-50 mph
- 125cc = 65-70 mph
- 200cc = 65-90 mph
- 350cc = 100-120 mph
- 500cc= 90-130 mph
- 600cc = 90-165 mph
- 1000cc = 100-170 mph
As one may expect, the larger the displacement (bigger cc number) the higher the top speed.
But is this correlation always (almost) linear within each vehicle category? And how do different vehicle categories relate to one another?
Let’s drill into the details and discuss these questions in detail!
How Fast is 1 CC in Mph?
“How fast is one CC in MPH?”
This question seems absurd at first glance since internal combustion engines are used in many different types of vehicles and vessels.
But we at PowerSportsGuide have conducted comprehensive research and compiled the mph/cc ratios of many different vehicles under one roof.
Based on our research, 1 cc translates to about 0.01-1 mph if we talk about average vehicles, vessels, and small airplanes.
To be more precise, 1 cc equals 0.03-0.07 mph for vessels like jet skis and sport boats, 0.05-0.1 mph for cars, UTVs, and ATVs, 0.1-0.3 mph for most heavy and middle-weight motorcycles, and 0.3-1 mph for lightweight motorcycles.
For your convenience we’ve listed some the “cc to mph conversion rates” for some common vehicle and vessel categories:
- Riding movers: 100cc = ca. 1 mph (0.01 mph/cc)
- Sport boats and jet skis: 100cc = 3-7 mph (0.03-0.07 mph/cc)
- UTVs: 100cc = 7-9 mph (0.07-0.09 mph/cc)
- Average cars: 100cc= 5-10 mph (0.05-0.1 mph/cc)
- ATVs: 100cc= 10-12 mph (0.1-0.12 mph/cc)
- Snowmobiles: 100cc = 10-18 mph (0.1-0.18 mph/cc)
- Large motorcycles: 100cc = 10-30 mph (0.1-0.3 mph/cc)
- F1 cars: 100cc= 14-16 mph (0.14-0.16 mph/cc)
- Go-karts: 100cc = 20-30 mph (0.2-0.3 mph/cc)
- Small motorcycles: 30-100 mph (0.1-1 mph/cc)
Are you wondering where these numbers come from?
Let’s see some examples!
It’s no surprise that the slowest vehicles are utility machines like riding lawnmowers.
Since they are not designed for drag racing, their 500-600cc engines provide a moderate top speed of 4-6 mph. Dividing these numbers results in an mph/cc ratio of 0.01; in other words, a riding lawnmower produces about 1 mph for every 100cc of displacement.
Jet skis and sport boats seem to go very fast on water, but they are much slower than on-land wheeled powersport vehicles due to the high resistance of the water.
For example, a 900cc jet ski can reach 42-50 mph, which results in a mph/cc ratio of 0.05-0.06 (100cc = 5-6 mph).
Interestingly, you can’t expect much higher figures from a high-performance jet ski engine, as these 1500-1800cc power mills can produce a top speed of 60-70 mph (100cc = 4 mph).
(However, it has to be mentioned that the top speed of certain high-performance jet skis is electronically restricted.)
ATVs and UTVs are not known for going at extreme speeds as they are designed for maximum torque. The engine on these types of vehicles typically offers 7-12 mph for every 100cc, translating to an mph/cc ratio of 0.07-0.12.
You can expect to get 10-18 mph per 100cc on a 600-1000cc snowmobile, and surprisingly 1600cc F1 cars don’t exceed a range of 14-16 mph/100cc either.
Based on our research, one of the most exciting categories is motorcycles.
Thanks to their extremely powerful engines, 600cc and 1000cc motorcycles can reach amazing top speeds of 90-170 mph.
But their large displacements lead to a lower, 0.15-0.3 mph/cc ratio (100cc =15-30 mph), within the entire motorcycle category.
In contrast, 300cc-350cc motorcycles give you 30-40 mph for every 100cc, while a 125cc-200cc category vehicle produces 30-60 mph per 100cc.
The best mph/cc ratios are claimed by 50cc motorcycles and scooters. These machines can reach a top speed of 30-50 mph with their tiny engines, which results in an outstanding mph/cc ratio of 0.6-1!
Although they cannot achieve such speeds, if we do the math, this would translat to a theoretical value of 60-100 mph per 100cc!
CC to MPH Conversion Chart
Let’s compare some vehicle categories by their mph/cc ratios in one chart!
Disclaimer: Please consider this list a collection of some hard numbers, posted only for information purposes. If you do your research, you will likely find some machines with better or poorer mph/cc figures. But it’s safe to say that most stock vehicles fall into these ranges.
Conclusion – How Fast Are Different Engines?
How Fast is 1 CC in MPH?
As a rule of thumb, 1 cc equals 0.03-0.07 mph for small vessels like sport boats or jet skis. You can expect 0.05-0.1 mph/cc for cars and wheeled off-road vehicles like ATVs and UTVs.
A 0.1-0.3 mph/cc ratio can be applied for most middleweight and heavy motorcycles, while 500cc motorcycles can offer a great 0.3-1 mph/cc.
How Fast is 50cc in MPH?
A 50cc vehicle can typically reach 25-50 mph, depending on its type and features.
- 50cc scooters: 25-40 mph
- 50cc motorcycles: 25-50 mph
- 50cc go-karts: 35mph
How Fast is 60cc in MPH?
You can expect to get about 25-60 mph from a 60cc, single-cylinder engine.
- 60cc dirt bikes: 25-45 mph
- 60cc street bikes: 25-55 mph
- 60cc go-karts: 50-60 mph
How Fast is 100cc in MPH?
A vehicle can hit a top speed of 45-70 mph with a 100cc engine. These tiny power sources are used in scooters, lightweight motorcycles, and entry-level go-karts.
- 100cc motorcycles: 45-60 mph
- 100cc go-karts: 60-70 mph
How Fast is 125cc in Mph?
A 125cc engine can propel a vehicle at 25-80 mph. Kid-sized ATVs are rated for a top speed of 25-40 mph, while racing go-karts top out at 70-80 mph.
- 125cc ATVs: 25-40 mph
- 125cc scooters: 50-60 mph
- 125cc motorcycles: 60-75 mph
- 125cc go-karts: 70-80 mph
How Fast is 200cc in MPH?
200cc engines typically offer a top speed of 30-90 mph.
The slowest 200cc machines are kid-sized snowmobiles, which can only reach a (limited) top speed of 30 mph. On the other end of the spectrum, you can find the high-performance 200cc street motorcycles rated at 60-90 mph.
- 200cc snowmobiles: 30 mph
- 200cc ATVs: 35-40 mph
- 200cc motorcycles: 60-90 mph
How Fast is 250cc in MPH?
The top speed of 250cc vehicles varies widely but typically ranges from 35 mph to a whopping 140 mph.
- 250cc ATVs: 35-45 mph
- 250cc snowmobiles: 35-45 mph
- 250cc motorcycles: 70-90 mph
- 250cc go-karts: 100-140 mph
How Fast is a 300cc in MPH?
You can expect to reach a top speed of 40-115 mph in a 300cc vehicle.
- 300cc ATVs: 40-50 mph
- 300cc dune buggies: 40-50 mph
- 300cc snowmobiles: 50-60 mph
- 300cc motorcycles: 90-115 mph
How Fast is a 500cc in MPH?
Powersport vehicles with a 500cc engine can go as fast as 50-120 mph, while an average small boat with a 500cc outboard can hit 20-30 mph.
It’s a fun fact that 500cc riding lawnmowers can only reach 4-6 mph.
- 500cc riding mowers: 4-6 mph
- 500cc outboards: 20-30 mph
- 500cc ATVs: 50-60 mph
- 500cc snowmobiles: 80-90 mph
- 500cc motorcycles: 90-120 mph
How Fast is 600cc in MPH?
Depending on their type and features, the top speed of a 600cc powersport vehicle varies from 60 mph up to 165 mph. Meanwhile, 600cc riding lawnmowers top out at 4-6 mph.
- 600 riding movers: 4-6 mph
- 600cc ATVs: 60-65 mph
- 600cc snowmobiles: 90-110 mph
- 600cc motorcycles: 90-165 mph
How Fast is 800 cc in MPH?
A vehicle with an 800cc engine can go as fast as 50-170 mph.
The slowest machines in this category are the 800cc UTVs with a top speed of 50-65 mph, while high-performance motorcycles can reach speeds up to 170 mph.
- 800cc UTVs: 50-65 mph
- 800cc cars: 80-90 mph
- 800cc snowmobiles: 110-120 mph
- 800cc motorcycles: 90-170 mph
How Fast is 1000 cc in MPH?
1000cc engines are used in a large variety of vehicles that offer top speeds of 70-170 mph. Regarding vessels, 1000cc jet skis top out at 40-55 mph, while smaller boats with 1000cc engines can hit 35-40 mph.
- 1000cc outboards: 35-40 mph
- 1000cc jet skis: 40-55 mph
- 1000cc UTVs: 70-85 mph
- 1000cc cars: 70-90 mph
- 1000cc snowmobiles: 100-120 mph
- 1000cc motorcycles: 100-170 mph
How Fast is 1500 cc in MPH?
When it comes to the average car, a 1500cc engine can reach a top speed of 120-170 mph, but F1 cars with 1600cc engines top out at 220-250 mph.
On the other end of the spectrum are utility vehicles like 1500cc farm tractors; these machines can usually only go 20-25 mph. But you can expect to reach 35-70 mph on a vessel like a jet ski or a recreational boat.
- 1500cc farm tractors: 20-25 mph
- 1500cc outboard engines: 35-50 mph
- 1500cc jet skis: 60-70 mph
- 1500cc cars: 120-170 mph
How Fast is 2000 cc in MPH?
Cars with 2000cc engines can typically hit 120-170 mph, while boats with a 2000cc engine top out 35-55 mph.
Let’s face it; there’s no magic formula to directly convert engine cc to mph, as the speed of a machine depends on countless factors like its type, design, and engine features.
For example, a 500cc riding lawnmower can only go 4-6 mph, while the same displacement engine can propel a GP motorcycle to 220-250 mph.
A 1600cc farm tractor tops out at 20-25 mph, while an F1 car with its advanced 1600cc engine can go as fast as 220-250 mph.
But even if there’s no strict correlation between cc and mph figures, we can calculate a “conversion number” for many different vehicle categories.
For example, 1 cc equals 0.03-0.07 mph for small sport boats and jet skis (100cc = 3-7 mph), 0.05-0.1 mph for the average car (100cc = 5-10 mph), and 0.1-0.3 for most motorcycles with 300-1000cc enignes (100 cc = 10-30 mph).
Interestingly, the best mpg/cc ratios are offered in 50cc motorcycles; these machines can translate 1 cc into 0.6-1 mph!
(Please consider these figures as hard numbers, which can be applied to many stock vehicles and vessels.)