introduction to 20 Centimeters to Inches
Quick Answer Box
20 centimeters = 7.87 inches
- Decimal: 7.87 inches
- Fraction: 7 7/8 inches (nearest 1/8″)
- Feet + Inches: 0 feet 7.87 inches
- Formula: 20 ÷ 2.54 = 7.87 inches
What is 20 Centimeters to Inches?
20 centimeters equals 7.87 inches. This conversion connects two measurement systems: the metric system (used in most of the world, including Europe and Asia) and the imperial system (used mainly in the United States). People convert 20 cm to inches when shopping for clothes, shoes, or electronics sold with metric labels, when measuring furniture or DIY projects, or when comparing height and length specs listed only in centimeters. Students also use this conversion in school science and math classes.
How to Convert Centimeters to Inches
The standard conversion factor is: 1 inch = 2.54 centimeters.
Method 1 — Divide: 20 cm ÷ 2.54 = 7.87 inches
Method 2 — Multiply: 20 cm × 0.393701 = 7.87 inches
Both methods give the same result because 0.393701 is simply 1 ÷ 2.54. If you’re doing quick mental math, dividing by 2.54 is usually easier. For precise work (engineering, sewing, or woodworking), use the multiplication method with more decimal places to avoid rounding errors.
Real-World Examples: What Does 20 CM Look Like?
- A dinner plate: Most standard dinner plates are close to 20 cm (7.87 in) wide.
- A large smartphone box: Many phone or tablet boxes measure around this length.
- A men’s shoe (US size 9-10): Shoe insole lengths often fall near 7.87 inches.
- A sheet of paper folded in half (A4): Roughly matches this width.
- A standard ruler: Just under the length of a typical 8-inch ruler.
- A hardcover novel: Many hardcover books are about this tall.
Practical Use Cases
DIY & Home Improvement
If you’re cutting a shelf, tile, or piece of trim to 20 cm, your tape measure will read close to 7 7/8 inches. Many US hardware stores sell tools marked in inches, so converting metric blueprints to 7.87 in helps you avoid costly cutting mistakes on materials like plywood or PVC pipe.
Fashion & Clothing / Shopping
Online clothing and shoe listings from European or Asian brands often use centimeters. A bag strap, shoe length, or sleeve width listed as 20 cm converts to 7.87 inches, helping US shoppers check sizing before buying without needing a separate app.
School, Science & Math
Science classes frequently require converting metric lab measurements into imperial units for reports. If a lab specimen or diagram measures 20 cm, students should record it as 7.87 inches on assignments that require imperial units, rounding to two decimal places unless told otherwise.
Nearby Conversions Table
| Centimeters | Inches (Decimal) | Fraction | Feet + Inches |
|---|---|---|---|
| 15 cm | 5.91 in | 5 7/8 in | 0 ft 5.91 in |
| 16 cm | 6.30 in | 6 1/4 in | 0 ft 6.30 in |
| 17 cm | 6.69 in | 6 3/4 in | 0 ft 6.69 in |
| 18 cm | 7.09 in | 7 1/8 in | 0 ft 7.09 in |
| 19 cm | 7.48 in | 7 1/2 in | 0 ft 7.48 in |
| 20 cm | 7.87 in | 7 7/8 in | 0 ft 7.87 in |
| 21 cm | 8.27 in | 8 1/4 in | 0 ft 8.27 in |
| 22 cm | 8.66 in | 8 5/8 in | 0 ft 8.66 in |
| 23 cm | 9.06 in | 9 in | 0 ft 9.06 in |
| 24 cm | 9.45 in | 9 1/2 in | 0 ft 9.45 in |
| 25 cm | 9.84 in | 9 7/8 in | 0 ft 9.84 in |
Frequently Asked Questions
Q: How many inches is 20 cm? A: 20 cm equals 7.87 inches. You get this by dividing 20 by 2.54, the number of centimeters in one inch.
Q: What is 20 cm as a fraction in inches? A: 20 cm is approximately 7 7/8 inches when rounded to the nearest eighth. For more precision, it’s closer to 7.874 inches.
Q: Is 20 cm less than 1 foot? A: Yes. 20 cm (7.87 inches) is less than 1 foot (12 inches). It’s about 65% of a foot.
Q: How do I convert inches back to cm? A: Multiply the inch value by 2.54. For example, 7.87 inches × 2.54 = 20 cm, confirming the original conversion.
Q: Is 20 cm more than 8 inches? A: No. 20 cm equals 7.87 inches, which is slightly less than 8 inches. The difference is about 0.13 inches.
Q: What common object is about 20 cm long? A: A standard dinner plate, a large smartphone box, or a men’s size 9-10 shoe insole are all close to 20 cm (7.87 in) in length.
Tips for Converting Centimeters to Inches
- Quick mental math: Divide the cm value by 2.5 for a rough estimate, then adjust slightly down (since 2.54 is a bit more than 2.5). For 20 cm, that’s roughly 8 inches, close to the exact 7.87 in.
- Use decimals for precision: Decimals (7.87 in) are best for tools, engineering, or science reports. Use fractions (7 7/8 in) when marking measurements with a standard ruler or tape measure.
- Avoid rounding too early: Round only your final answer, not the numbers in the middle of your calculation, to prevent small errors from adding up.
- Watch for unit mix-ups: Double-check whether a measurement is in centimeters or millimeters before converting — mixing them up gives answers 10x too large or small.
- Use an online calculator: For fast, error-free results, especially with odd decimal values, use a reliable online cm-to-inches calculator instead of manual math.
Conclusion
20 centimeters equals 7.87 inches (7 7/8 in), a simple but useful conversion for shopping, DIY projects, and schoolwork. Bookmark this page so you always have the exact answer and formula on hand whenever you need to convert cm to inches.
Also read 7 Ft in Inches: 7 ft = 84 Inches
