35mm is equal to 1.37795 inches, which rounds to 1.38 inches. On a standard ruler, 35mm is slightly less than 1⅜ inches.
If you are measuring an object, checking a watch size, comparing dimensions, or converting millimeters into inches, this guide explains what 35mm looks like and how to calculate it accurately.
How Many Inches Is 35mm?
The exact conversion of 35 millimeters is:
35 millimeters in inches
1.37795 inches
≈ 1.38 inches
Millimeters
35 mm
Exact conversion
1.3779527559 in
Rounded measurement
1.38 in
This means 35mm is a little less than one and three-eighths inches. The difference is small, so 1.38 inches is suitable for most everyday measurements.
How Do You Convert 35mm to Inches?
To convert millimeters into inches, divide the millimeter measurement by 25.4.
This works because one international inch is exactly equal to 25.4 millimeters.
Conversion formula:
\[ \text{Inches}=\frac{\text{Millimeters}}{25.4} \]
For 35mm:
\[ 35\div25.4=1.3779527559 \]
Therefore:
\[ \boxed{35\text{ mm}=1.37795\text{ inches}} \]
You can use the same formula for any millimeter measurement. Simply replace 35 with your desired number.
Where Is 35mm on a Ruler?
35mm is approximately 1.38 inches on an inch ruler. It falls between 1¼ inches and 1½ inches, slightly before the 1⅜-inch mark.
On a metric ruler, find the 3.5-centimeter mark. Since 10 millimeters make one centimeter, 35mm is the same as 3.5cm.
Here is how the measurement compares with common ruler markings:
| Ruler measurement | Decimal inches |
| 1¼ inches | 1.25 |
| 1⅜ inches | 1.375 |
| 35mm | 1.378 |
| 1½ inches | 1.50 |
What Is 35mm in Centimeters?
35mm is equal to 3.5 centimeters.
To convert millimeters into centimeters, divide by 10.
\[ 35\div10=3.5\text{ cm} \]
Therefore:
- 35mm = 3.5cm
- 35mm = 1.37795 inches
- 35mm = 0.11483 feet
These are three different ways to express the same length.
How Wide Is 35mm in Inches?
If you are measuring the width of an object, 35mm represents approximately 1.38 inches across.
For example, a 35mm-wide item would have a width slightly greater than 1⅜ inches.
The actual size depends on what you are measuring. A width measurement describes the distance from one side to the other, while a length measurement describes how long something is.
For a rectangular object, you may need to measure both its width and length. For a round object, you may be measuring its diameter instead.
How Many Inches Is 35mm x 45mm?
A measurement of 35mm x 45mm describes two dimensions. The first measurement is 35mm, and the second is 45mm.
Here are their inch equivalents:
| Millimeters | Inches |
| 35mm | 1.37795 inches |
| 45mm | 1.77165 inches |
Therefore, 35mm x 45mm is approximately 1.38 x 1.77 inches.
This conversion is useful when checking the dimensions of small objects, photo formats, identification photographs, and other rectangular items.
Is 35mm by 45mm the Same as 35mm x 45mm?
Yes. Both expressions describe the same dimensions.
- 35mm by 45mm means 35mm in one direction and 45mm in the other.
- 35mm x 45mm expresses the same measurements using the multiplication symbol.
- In inches, both measurements are approximately 1.38 x 1.77 inches.
The order of the measurements matters when comparing an object’s width and height, so always check which dimension comes first.
How Many Inches Is 35mm of Rain?
35mm of rainfall is equal to approximately 1.38 inches of rain.
Rainfall measurements describe the depth of water collected over a flat surface. They do not describe the width or diameter of an object.
To convert 35mm of rainfall into inches, use the same conversion formula:
\[ 35\div25.4=1.37795 \]
Therefore, 35mm of rain represents about 1.38 inches of rainfall.
This amount can help you understand weather reports that use metric measurements instead of inches.
How Many Inches Is 35mm in Diameter?
A circular object with a diameter of 35mm has a diameter of approximately 1.38 inches.
Diameter means the straight-line distance across a circle, passing through its center.
For example, if a round metal part measures 35mm from one edge to the opposite edge through its center, its diameter is 1.38 inches.
Remember that diameter and circumference are different measurements. Diameter measures straight across the circle, while circumference measures the distance around its outside edge.
How Many Inches Is 35mm Round?
If someone describes an object as 35mm round, they usually mean that its diameter is 35mm.
In inches, this measurement is approximately 1.38 inches across.
However, the word “round” can sometimes refer to the general shape rather than a specific measurement. Check whether the measurement refers to diameter before using it to select a replacement part or fitting.
How Many Inches Is 35mm for a Watch?
A watch with a 35mm case diameter has a case width of approximately 1.38 inches.
Watch manufacturers commonly describe case sizes in millimeters. A 35mm watch case is measured across the case, usually excluding the crown.
Here is a simple comparison of common watch case measurements:
| Watch case size | Inches |
| 30mm | 1.18 inches |
| 32mm | 1.26 inches |
| 35mm | 1.38 inches |
| 36mm | 1.42 inches |
| 38mm | 1.50 inches |
| 40mm | 1.57 inches |
| 42mm | 1.65 inches |
| 45mm | 1.77 inches |
A 35mm watch is generally considered a relatively compact case compared with many larger modern watch designs. However, how a watch looks on your wrist also depends on its lug-to-lug length, case thickness, and overall design.
Is 35mm the Same as 1⅜ Inches?
Almost. In fact, 1⅜ inches is equal to 34.925mm.
The difference between 35mm and 1⅜ inches is only 0.075mm.
| Measurement | Millimeters |
| 1¼ inches | 31.75mm |
| 1⅜ inches | 34.925mm |
| 35mm | 35mm |
| 1½ inches | 38.1mm |
How Many Inches Is 35mm to Feet?
35mm is equal to approximately 0.11483 feet.
To convert millimeters into feet, divide the measurement by 304.8 because one foot contains 304.8 millimeters.
\[ 35\div304.8=0.1148294 \]
Therefore:
- 35mm = 0.11483 feet
- 35mm = 1.37795 inches
- 35mm = 3.5 centimeters
For most everyday measurements, inches or centimeters are easier to understand than such a small fraction of a foot.
How Many Inches Is 45mm?
Although the main measurement in this guide is 35mm, 45mm is another useful conversion to know.
45mm is equal to approximately 1.77 inches.
Using the standard conversion formula:
\[ 45\div25.4=1.7716535433 \]
Therefore, 45mm is approximately 1.77 inches.
This is useful when comparing 35mm and 45mm objects or checking dimensions listed in metric units.
Millimeters to Inches Conversion Chart
The following chart shows 35mm alongside other nearby measurements. It can help you compare sizes without calculating each conversion separately.
| Millimeters | Inches (decimal) | Approximate fraction |
| 25mm | 0.9843 | 1 inch |
| 28mm | 1.1024 | 1⅛ inches |
| 30mm | 1.1811 | 1³⁄₁₆ inches |
| 32mm | 1.2598 | 1¼ inches |
| 33mm | 1.2992 | 1⁵⁄₁₆ inches |
| 34mm | 1.3386 | 1⅜ inches |
| 35mm | 1.3780 | 1⅜ inches |
| 36mm | 1.4173 | 1⁷⁄₁₆ inches |
| 38mm | 1.4961 | 1½ inches |
| 40mm | 1.5748 | 1⁹⁄₁₆ inches |
| 42mm | 1.6535 | 1⅝ inches |
| 45mm | 1.7717 | 1¾ inches |
| 50mm | 1.9685 | 2 inches |
Note: Fractional-inch values are rounded to the nearest 1/16 inch. They are approximate, not exact equivalents.
Is 35mm Pipe Size Equal to 1.38 Inches?
A 35mm pipe measurement converts mathematically to approximately 1.38 inches. However, this does not necessarily mean it is the same as a standard 1.38-inch pipe.
Pipe sizes can refer to different measurements, including:
- Outside diameter
- Inside diameter
- Nominal pipe size
For example, a pipe described as 35mm may have an outside diameter of 35mm, but its inside diameter will depend on its wall thickness.
If you are buying a pipe, connector, or fitting, check the manufacturer’s actual dimensions instead of relying only on the inch conversion.
Quick Conversion Reference for 35mm
Here is a quick summary of the most useful conversions discussed in this guide.
| Measurement | Equivalent |
| 35mm to inches | 1.37795 inches |
| 35mm to centimeters | 3.5cm |
| 35mm to feet | 0.11483 feet |
| 35mm to fractional inches | Approximately 1⅜ inches |
| 35mm watch diameter | 1.38 inches |
| 35mm rainfall | 1.38 inches |
| 35mm diameter | 1.38 inches |
| 35mm width | 1.38 inches |
| 35mm x 45mm | 1.38 x 1.77 inches |
Frequently Asked Questions
1. How many inches is 35mm exactly?
35mm is equal to 1.3779527559 inches. For everyday use, you can round this measurement to 1.38 inches.
2. Is 35mm bigger than 1 inch?
Yes. 35mm is approximately 1.38 inches, making it about 0.38 inches longer than 1 inch.
3. Is 35mm close to 1.5 inches?
No. It is closer to 1⅜ inches (1.375 inches). A measurement of 1.5 inches is equal to 38.1mm.
4. How do I measure 35mm on an inch ruler?
Find the 1⅜-inch mark on your ruler. This is almost exactly the same as 35mm. If your ruler has metric markings, look for the 35mm or 3.5cm mark.
5. What is 35mm in decimal inches?
35mm equals 1.37795 decimal inches. Rounded to two decimal places, it is 1.38 inches.
6. What is 35mm in cm and inches?
35mm equals 3.5 centimeters and approximately 1.38 inches. Both measurements represent the same length.
7. How many inches is 35mm wide?
An object that measures 35mm wide is approximately 1.38 inches wide. This conversion applies to its width regardless of its shape.
8. How many inches is 35mm compared with 45mm?
35mm is approximately 1.38 inches, while 45mm is approximately 1.77 inches. The difference between them is 10mm, or about 0.39 inches.
Final Answer: How Many Inches Is 35mm?
35mm is equal to 1.37795 inches, or approximately 1.38 inches. On a standard ruler, it is almost exactly 1⅜ inches.
You can also remember these useful equivalents:
- 35mm = 3.5cm
- 35mm = 0.11483 feet
Whether you are checking a watch diameter, measuring an object’s width, converting rainfall, or comparing metric dimensions, the same conversion rule applies: divide millimeters by 25.4 to get inches.
Hannah Fleming writes role overviews for healthcare, education and community-focused jobs. She breaks down daily tasks, skills and typical requirements in plain language, so readers can see what a role involves before they apply.