Convert 3 MM to Inches - Precision Calculator

Convert 3 millimeters to inches with precision control

Quick Answer
3 mm = 0.1181 in
โ‰ˆ 1/8" (fractional)
1 inch = 25.4 mm ยท 3 mm รท 25.4 = 0.1181 in

๐Ÿ“ Visual Size Comparison

Real-world comparison
About a mung bean
Scaled 1:0.13 mm = 0.1181" (1/8")
Millimeters (mm)1203 mmInches (in)00.118"
Millimeter ticks
Inch ticks (1/16")
Note:The ruler is scaled down for large values.

Detailed Results

Decimal (4 places)
0.1181 in
Fraction (1/16")
1/8"
2 / 4 / 6 decimals
0.12 in ยท 0.1181 in ยท 0.118110 in
Reverse check
0.1181 in ร— 25.4 = 3 mm
0.1181 in
1/8"
3 mm = 0.1181 inches
Formula: 3 mm รท 25.4 = 0.1181 inches

Adjust Precision

Results at Different Precisions

2 Decimal Places
0.12 in
4 Decimal Places
0.1181 in
6 Decimal Places
0.118110 in

Fractional Inch Results

1/8" Precision
1/8"
1/16" Precision
1/8"
1/32" Precision
2/17"

๐Ÿชต Woodworking Application

For woodworking projects, 3 mm converts to approximately 1/8" when using 1/16" precision, which is standard for most woodworking measurements.

Common Wood Sizing:
Thin veneer or laminate thickness

โš™๏ธ Engineering Application

In engineering contexts, 3 mm equals 0.118110 inches with high precision (6 decimal places) for accurate technical specifications.

Engineering Format:
3 mm (0.118110")

๐Ÿ›’ E-commerce Product Description

For online product listings, you can describe this measurement as:

Standard: Size: 3 mm (0.12 inches)
Approximate: Approx. 0.12" (3mm)
Dimension: 3mm / 0.12"

๐Ÿ–จ๏ธ 3D Printing Application

For 3D printing, 3 mm is the standard metric measurement. The imperial equivalent is 0.1181 inches.

3D Print Context:
Small component or connector size

Where This Size Is Used

Small sizes (< 10 mm)
  • Precision measurement and tolerances
  • Electronics components and connectors
  • Jewelry and craft parts
Medium sizes (10โ€“100 mm)
  • Common hardware and fasteners
  • Phones, tablets, and accessories
  • Furniture fittings and fixtures
Large sizes (> 100 mm)
  • Construction and building materials
  • Furniture dimensions and clearances
  • Engineering project measurements
3 mm is close to Coin thickness (1.5 mm)
3 mm is close to Credit card thickness (0.76 mm)
3 mm is close to Phone thickness (7.5 mm)

Quick Reference Table

MillimetersInches (Decimal)Inches (Fraction)
1.50 mm0.0591 in1/16"
2.25 mm0.0886 in1/11"
3.00 mm0.1181 in1/8"
3.75 mm0.1476 in1/7"
4.50 mm0.1772 in2/11"
6.00 mm0.2362 in3/13"

Frequently Asked Questions

How do I convert 3 mm to inches?

To convert 3 millimeters to inches, divide by 25.4 (the exact conversion factor). The result is 0.1181 inches.

What is 3 mm in fractional inches?

3 mm is approximately 1/8" when expressed as a fraction. This is commonly used in woodworking and construction.

Is this conversion accurate for engineering purposes?

Yes, our conversion uses the standard conversion factor (1 inch = 25.4 mm exactly) and supports up to 6 decimal places for high-precision engineering applications.

Need to Convert Different Values?

Use our interactive converter tool to convert any millimeter value to inches with real-time results.

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Quick Conversion Links

Popular millimeter and inch values with dedicated conversion pages.

Inches to MM Chart