20mm to Inches
Convert 20 millimeters to inches — instant, accurate, and easy
The Answer
Quick Answer: How Many Inches is 20mm?
20mm equals 0.7874 inches (0.787402 inches to be exact). When converting 20mm to inches, 20 millimeters converts to 0.7874″ in decimal or 25/32″ in fractional form. 20mm is 0.95mm larger than 3/4″ (19.05mm)
The conversion of 20 mm to inches is exact because one inch equals exactly 25.4 millimeters by international standard. Therefore, 20 divided by 25.4 gives us 0.7874 inches.
What is 20mm in Inches?
20mm in inches is 0.7874 inches. When you convert 20 millimeters, you get 0.787402 inches in decimal form. In fractional form (nearest 1/64″), 20mm equals approximately 25/32 of an inch.
Precise Value
The exact value of 20 mm in inches is 0.787402. For most practical purposes, 0.7874″ (4 decimal places) is more than accurate enough for measurements in construction, hardware, jewelry, and everyday use.
How to Convert 20mm to Inches
Converting 20mm to inches is simple. Use this formula:
Applying this to 20 mm:
Step-by-Step Guide
- Take the millimeter value: 20 mm
- Divide by 25.4: 20 ÷ 25.4
- Get the decimal inches: 0.7874″
- Convert to fraction (optional): ≈ 25/32″
Common Uses for 20mm Measurements
20mm in Jewelry
20mm is used in bold statement jewelry: chunky chains, large beads, wide bracelets, and decorative pendants.
20mm in Hardware and Tools
20mm is a large hardware size for construction bolts, pipe fittings, plumbing components, and heavy-duty machinery.
20mm in Everyday Items
20mm is close to 0.79 inches. Common for pipe diameters, larger cables, and standard tool sizes.
20mm to Inches Conversion Chart
| Unit | Value |
|---|---|
| Millimeters | 20 mm |
| Inches (decimal) | 0.7874″ |
| Inches (fraction) | 25/32″ |
| Centimeters | 2.00 cm |
| Feet | 0.0656 ft |
| Meters | 0.0200 m |
Values Near 20mm
| MM | Decimal Inches | Fractional |
|---|---|---|
| 17 mm | 0.6693″ | 43/64″ |
| 18 mm | 0.7087″ | 45/64″ |
| 19 mm | 0.7480″ | 3/4″ |
| 20 mm | 0.7874″ | 25/32″ |
| 21 mm | 0.8268″ | 53/64″ |
| 22 mm | 0.8661″ | 55/64″ |
| 23 mm | 0.9055″ | 29/32″ |
20 mm in Other Units
Millimetres convert cleanly into every other length unit. Here is 20 mm expressed seven different ways — useful when a drawing, spec sheet or supplier quotes a unit other than inches.
| Unit | 20 mm equals |
|---|---|
| Centimetres (cm) | 2 cm |
| Metres (m) | 0.02 m |
| Inches (in) | 0.7874 in |
| Feet (ft) | 0.0656 ft |
| Yards (yd) | 0.02187 yd |
| Thousandths of an inch (mil) | 787.4 mil |
| Typographic points (1/72 in) | 56.69 pt |
How Accurate Is Each Fraction of 20 mm?
20 mm is exactly 0.7874″. Any fraction is a rounding of that number, so each one carries a small error. This table shows the closest fraction at each common denominator and how far it actually sits from 20 mm.
| Rounded to | Fraction | Decimal | Difference |
|---|---|---|---|
| Nearest 1/2″ | 1″ | 1.0000″ | +5.400 mm |
| Nearest 1/4″ | 3/4″ | 0.7500″ | −0.950 mm |
| Nearest 1/8″ | 3/4″ | 0.7500″ | −0.950 mm |
| Nearest 1/16″ | 13/16″ | 0.8125″ | +0.637 mm |
| Nearest 1/32″ | 25/32″ | 0.7813″ | −0.156 mm |
| Nearest 1/64″ | 25/32″ | 0.7813″ | −0.156 mm |
For woodworking, DIY and general workshop use, 25/32″ is the practical choice — it lands within 0.4 mm of 20 mm, which is finer than most tape measures resolve. For machining, toolmaking or CAD, use the decimal value 0.7874″ rather than any fraction.
Frequently Asked Questions: 20mm to Inches
How many inches is 20mm?
20mm equals 0.7874 inches, or approximately 25/32″ in fractional form.
What is 20mm in inches in fraction form?
20mm in fraction form is 25/32″ (rounded to nearest 1/64″).
How do I convert 20mm to inches?
Divide 20 by 25.4 to get inches. 20 ÷ 25.4 = 0.7874 inches.
20mm is 0.95mm larger than 3/4″ (19.05mm)
20mm is 0.95mm larger than 3/4″ (19.05mm)
How thick/wide is 20mm?
20mm is 0.7874″ or 2.00 centimeters. 20mm is close to 0.79 inches. Common for pipe diameters, larger cables, and standard tool sizes.