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SAE to metric conversion size chart (standard & inch to mm & cm)

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July 4, 2023

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With the help of this SAE to metric conversion size chart, you’ll easily convert standard & inch to mm & cm. If you have a socket or wrench, you need to determine what it converts into. The size chart can help you determine the mm to SAE conversion, whether you’re converting from one to the other. Check out the SAE size chart below. It allows you to easily jump between standard, metric, inches & feet!

Summary

The SAE to metric conversion size chart below is the easiest way to convert standard & inch measurements to mm & cm. For instance, you can see the following in the chart:

• 1 1/8 converts to a 28.575 mm socket.
• 7mm falls in between and converts to a 1/4 or 9/32 standard.
• 8mm falls in between and converts to a 5/16 or 11/32 standard.
• 12mm falls in between and converts to a 7/16 or 1/2 standard.
• 17mm falls in between and converts to a 5/8 or 11/16 standard.

Table of Contents

• SAE & Metric Screw Size Chart to convert standard & inch to mm & cm
• Best devices to measure SAE & metric
• What are millimeters and centimeters used for?
• Metric vs. Imperial System
• FAQ

SAE & Metric Screw Size Chart to convert standard & inch to mm & cm

With SAE & metric screw size chart, you’ll be out doing your various projects in no time. Make sure you get the right socket size and wrench! This wrench conversion chart helps you find out the differences. You can easily look up the fractions for socket wrenches to find their diameter and equivalents.

Standard to metric conversion should hopefully be a breeze with the metric conversion table above!

With the dynamic society, we must have basic knowledge of the units of measurements used today, either SAE or metric. We are primarily conversant with only the system used in our home countries.

Conversion from SAE to the metric system is a tiring and grueling experience. Conversion charts are tables designed to help you easily switch from one to another without making any errors. Many people often complain that the charts in circulation are challenging to use; we decided to create and design one that you can quickly utilize.

Do I need a table? This is a question that we often ask. We fail to realize that different items come in various measuring systems. The king-sized bed you use could be sold in inches while bedding is in centimeters; thus, having basic knowledge of the sizes will help you choose the right sized items. Placing your orders in online businesses requires prior knowledge of the goods needed to avoid costs incurred on returning.

Choosing the appropriate wrench size for basic repairs will also test your knowledge of the units. Their sizes could be written in millimeters, while nuts and bolts are inches. Our table will quickly help you navigate through such experiences.

Have you ever traveled to a foreign country and found measuring volume units different from what you are used to? Maybe water sold in ounces or petrol in gallons? To refill enough gas for your car, conversion to volume units you are familiar with is vital. The evening news bulletin giving the price of crude oil in barrels. At the same time, we only understand liters necessitates a relevant chart.

It is advisable to have your work done to perfection. A task as easy as buying an electric cord for your house could leave you homeless! The reason for this being if you get the wrong one, it could lead to a fire that will burn down your house. Nonetheless, you can view an electrical cord guide here.

We have listed the SAE equivalents in millimeters and centimeters for your convenience. You’ll also find it in inches and even feet! Let’s take a closer look at all of these in detail.

Best devices to measure SAE & metric

Consider one of these gifts for yourself. There’s an easy standard-to-metric chart magnet to put on your fridge! This impact socket set makes switching between different sizes or the easy thread identifier.

Name

Magnet chart

Thread Detective

Universal socket set

Picture

Buy on Amazon

Buy on Amazon

Buy on Amazon

What we love

Great, cheap magnet to put on a fridge.

Easy tool to identify the right thread.

Great socket set to upgrade your tool set.

Name

Magnet chart

Picture

Buy on Amazon

What we love

Great, cheap magnet to put on a fridge.

Name

Thread Detective

Picture

Buy on Amazon

What we love

Easy tool to identify the right thread.

Name

Universal socket set

Picture

Buy on Amazon

What we love

Great socket set to upgrade your tool set.

Thread Detective

When you need to figure out the right metric or SAE size, the thread detective can help you out. Here’s some more information on it.

Yalu&Freedom

Here's a great thread detective.

$46.48

Buy on Amazon

Standard to metric sticker conversion chart

Here’s a great magnet to put on the fridge.

Magnet

Put it on the fridge.

$3.99

Buy on Amazon

What is SAE, Or Standard?

SAE stands for Society of Automotive Engineers and is now known as SAE International. It’s the organization that standardized the units for ease of usage. The organization has a membership of over 128,000 worldwide. It’s responsible for advancing and setting standards in the engineering space. SAE has set standards for measurement that are not only followed by most of North America’s construction and automotive industry. They have also made the engineering and production aspect a piece of cake.

Units of measurement are a medium of communication. The standard size lengths were needed to enhance accuracy. The Roman Empire initially developed the system where one foot was generally the length of a human being. An inch was the width of a thumb, on the other hand.

SAE International took these basic units one step further and developed the evolved SAE measurement system. It continues to spread other technical information and set North American standards in the construction and auto industry. It does so through forums, magazines, journals, and periodicals.

It is mainly used in the UD and formerly in the UK. In the UK, it is referred to as the Imperial system. Other countries adopted another method of measurement, metric. Thereby, they left the two countries as the system’s primary users. Units of division in this system are in eighths and twelfths. With these scale graduations, it becomes tough to read the scale.

SAE units are also granted the label of UD Customary Units (USCS). It indicates the official unit used in the USA is not the same as the Metric system. It is also incompatible with the British Imperial system. It is a common mistake to use the Imperial system and SAE interchangeably as they are different systems.

They were used during the USA’s Industrial Revolution, thus cementing their use. The manufacturing and construction industry adapted its use as the accepted standard. You can use our metric-to-standard conversion tables to get the units you need for your project.

Now let us take a closer look at the metric system used in other parts of Europe and some parts of Asia and Africa.

Now you know how to do metric to SAE conversions.

What is the Metric System?

It is a measurement system developed in the 18^th century after the French Revolution. It is a measurement system with meter, liter, and gram as the standard. It’s used for length, volume, and mass. You will most certainly realize this model of representing lengths is the most common globally.

Units of measurements are subdivided into tenths, making the reading of this scale much easier than the other systems. The most common engineering level of the scale is the millimeter (mm). It is easier to read. Being the smallest, it can represent any length.

What makes the system most resourceful is the ability to be intuitive and interconnected. For instance, 1 liter of water will weigh 1 kg.

Thanks to its convenient measurement method and Napoleon’s triumphs, this system spread far and wide. Great Britain also accepted some metric units over the British Imperial system. The older generations in Britain may still use the older Imperial method. The youngsters prefer their kilograms and millimeters.

What are millimeters and centimeters used for?

Both Millimeters(mm) and centimeters(cm) are part of the metric system. While mm is a unit of length, cm can be used for both length and area. One mm is 0.1cm and one cm is 10mm. Since mm is the smaller unit, it denotes the very small but visible lengths and distances. For instance, the thickness of a wire or the length of your nail.

On the other hand, a centimeter is a larger unit and is roughly the 100^th part of a meter. It can be used to measure the size of medium-range objects. It’s great for the distance between two points in the vicinity. Where larger distances are involved, the meter is chosen over the centimeter.

SAE (Standard) vs. METRIC UNITS

Here’s what you need to know when it comes to the whole debate of SAE (standard) vs. metric.

SAE was incorporated into the whole automotive industry, although it took time. In the beginning, the standard was only used for vehicles. However, they are currently utilized in all modes of transport. Airplanes and boats adapted the system to become the preferred means of measurement. It happened when SAE changed from Society of Automobile Engineers to Society of Automotive Engineers.

The metric system is more prevalent in other countries. Major vehicle manufacturing hubs such as Japan and Germany use this mode. We now have vehicles with nuts and bolts in the metric system, which led to SAE sizes and metric-sized wrenches development.

It means if you’re an engineer looking to work on foreign cars made by companies like Nissan or Kia, you’re going to be buying metric equipment. But if you’re only looking at the domestic market, then you’re good to go with SAE sockets.

Nowadays, another innovation is also becoming more and more popular. Due to rising production costs in the USA, their big vehicle manufacturing companies source parts in other countries. The trend has led to vehicles having different components with different measuring systems. You can find the engine and its members in the metric system while the rest of the car is in SAE. It has given rise to the need for universal wrenches.

Repairs now require high-precision tools such as plasma glass cutters which accurately cut whatever component you need. MIG welders are also used for simple welding jobs. With vehicles now considered expensive investments, choosing the perfect wires for repairs requires an expert opinion.

Metric vs. Imperial System

For imperial vs. metric, take a look at this section to understand the two better.

An Imperial system is a form of older standardizations that have given way to more logical and thoughtful designs. It was mainly used in the UK. One foot was subdivided into twelve units or inches. Formerly it was equal to 11.6 inches. We can now quickly and comfortably represent inches as a foot or vice versa. The monarch made all these changes in ancient times, hence the Imperial.

The UK transitioned over later on, however. It was necessitated by the need to have a standard unit globally. After the French Revolution, the French developed the metric system. Napoleon’s conquests led to its acceptance in other lands.

It is the current base International System of Units (SI) for length. If you use or understand both the metric and imperial system, you will find the former easier to use.

SI Units

These universal units of measurements were agreed on to reduce confusion with data representation. With these, scientists can easily discuss their findings globally. An engineer can design a car in Germany and send the design to China, where it will be manufactured to the exact length.

Preparing various tools of different sizes for motor vehicles needs high-quality lathe machines. We have prepared a list of high-precision and easy-to-use lathe machines. They will give you the best quality for your money with medium-sized lathes which can fit in your garage.

FAQ

Conversion at home

When moving to a new office or apartment, you need extension cords to power your appliances. Choosing the right power cables can be a real struggle. You can get advice on how to choose the right extension here. You will get tips on connection and usage from the experts in the link.

It is a landowner’s dream to have well-manicured lawns and property landscaped to their liking. A garden will require a tractor suited for your property size if you have a garden. A tractor is an expensive investment; hence it needs proper guidance before purchase. You should strive to buy a top-rated machine and the best fit for performing tasks when required.

While revamping your home, you will need a basic understanding of the units of measurement. Some materials you will need are sold by the foot. An example is wood. Others are in meters. With this knowledge, you can prepare for the renovations needed regarding how big your furniture should be. If you’re looking to purchase property or buy car parts, knowing your British units from the American ones is good. It will give you the upper hand even before browsing.

Easy and simplified conversion size chart

It would be best to have a domestic wrench toolbox to help renovate. The sizes and types of wrench needed to depend on the bolts and fasteners you have. It is not unusual to find the fasteners and wrenches in different units of measurement. However, you will discover equivalent lengths in various sizes with our chart.

We aim at helping you with arithmetic computations and save your time by providing an accessible and simplified table. Our tables can be easily used by elementary school kids if needed.

Making a few vehicle repairs from home will lead to the need for a simplified chart. Tools used such as wheel spanners or nuts for tire tightening could be in either unit. A conversion table makes it easier to perform the tasks without a mechanic, making it cheaper to maintain your car.

We hope this article helped you learn about the various standards around the globe. Your next trip to Home Depot doesn’t leave you scratching your head as a consequence. Hopefully, SAE to metric conversion and a metric to standard conversion has gotten easier!

Make sure to also check out our guide on adding a shower to a half bath & our guide on shower vs. bathtub resale values. Hopefully, this has made finding the right bolt size easier, even without a fancy calculator or formula. Avoid stress and strain, and you won’t need Poisson’s ratio. You can just move up the page. We’ve also covered you with a wrench conversion chart and made it easy to find the right drill bit.

Hopefully, you’re no longer confused by imperial socket sizes. There is no need to dig into velocity, acceleration, & torque if you don’t have to!