Understanding different units of measurement is essential in many fields, from construction to cooking. Often, you’ll need to convert between millimeters (mm) and inches (in), two common units used worldwide.
This article will explain how to convert 43 mm to inches. We’ll also provide some context on the two systems of measurement: the metric system (which uses millimeters) and the imperial/US customary system (which uses inches).
Millimeters and inches: What are they?
To understand how to convert millimeters to inches, it’s helpful to have a clear understanding of what each unit of measurement represents.
The millimeter (mm)
A millimeter is a unit of length in the metric system, also known as the International System of Units (SI). A millimeter is equal to one-thousandth of a meter (1 mm = 1/1000 meter).
The inch (in)
An inch is a unit of length in the Imperial and U.S. customary systems of measurement. An inch is related to other Imperial units, such as feet (12 inches = 1 foot) and yards (36 inches = 1 yard).
How to convert millimeters to inches
The basic conversion factor is this: One inch equals 25.4 millimeters. To convert millimeters to inches, you divide the number of millimeters by 25.4. So, to find out how many inches are in 43mm, you divide 43 by 25.4.
You can also use the inverse conversion factor: One millimeter equals approximately 0.03937 inches.
Keep in mind that when you’re working with conversions, precision is important. Depending on what you’re measuring, even a small rounding error can make a big difference.
How to convert 43 millimeters to inches
To figure out how many inches are in 43 millimeters, we can use the conversion factor: 25.4 millimeters equals 1 inch.
So, we divide 43 by 25.4:
43 / 25.4 = 1.69291 inches
That means 43 mm is approximately 1.69291 inches. For most practical purposes, you could round that to 1.693 inches or even just 1.69 inches.
To put that in context, 43 millimeters is about the length of a large paperclip or the diameter of a US quarter.
Why would I need to know this?
Knowing how to convert millimeters to inches is surprisingly useful in a lot of situations. For example, engineers, manufacturers, and construction workers often need to switch between metric and imperial measurements. The same goes for people who enjoy DIY projects or crafting.
Let’s say you’re trying to pick out a drill bit, and the instructions call for a 43 mm drill. Knowing that 43 mm is roughly 1.69 inches can help you find the right tool.
Of course, you don’t have to do the math yourself. Plenty of online converters and calculators can do it for you; just keep in mind that different tools may provide different levels of precision.
You can also find conversion tables that list common millimeter-to-inch conversions.
Frequently Asked Questions
Is 40mm 2 inches?
No, 40mm is not quite 2 inches. Since 1 inch equals 25.4 millimeters, 40mm is equal to approximately 1.57 inches. So, it’s a bit short of the 2-inch mark. You can easily find online calculators to make these conversions if you need to be precise.
What is size 43 in inches?
The number 43 doesn’t directly translate to inches without context. If you’re talking about shoe sizes, a men’s size 43 in European sizing is roughly equivalent to a US men’s size 9.5 or about 10.5 inches. If you’re talking about something else, you’ll need to specify the units for an accurate conversion.
How big is 43mm on a ruler?
On a ruler, 43mm would be a little over 1 and 11/16 inches. Look for the metric side of the ruler, which has markings for millimeters. Find the mark labeled “40,” then count three small lines past it. That’s 43mm!
What is 1 inch in mm exactly?
One inch is exactly 25.4 millimeters. This is the standard conversion factor used for all inch-to-millimeter conversions. Keep this number handy for quick calculations!
Final Thoughts
So, 43 mm is about 1.69291 inches. Knowing how to convert between millimeters and inches can be super helpful, and it’s not too tricky once you get the hang of it.
Luckily, there are plenty of online tools and calculators that can help you get accurate conversions every time.
Understanding unit conversions like this can be useful in all sorts of everyday situations, as well as in more specialized fields.