Convert Nail to Centimeter
Convert nails to centimeters instantly. 1 nail = 5.715 centimeter — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Centimeter to Nail converter for the reverse conversion.
Units explained
Nail
A nail is an Imperial unit of length equal to 2.25 inches (about 57.15 mm). It was historically used in the English cloth trade.
The nail derives from an English cloth-measure tradition dating to medieval times. Standardised at 2.25 inches (or 1/16 of a yard) through English customary practice and ratified by the 1959 International Yard and Pound Agreement.
Nails were historically used to measure cloth, particularly small pieces and ribbons. Rare in modern commerce but appears in historical textile literature and reproduction crafts.
Medieval English cloth-trade origin; standardised at 1/16 yard; fixed exactly at 0.05715 m via the 1959 International Yard and Pound Agreement.
Centimeter
A centimeter is a metric unit of length equal to one hundredth of a meter (1/100 m). It is one of the most commonly used SI sub-units in daily life, especially for measuring small objects, body dimensions, paper sizes, and short distances.
The centimeter emerged from the French metric system established by the French Academy of Sciences in 1793. The metric system introduced decimal-based prefixes (milli-, centi-, deci-, deca-, hecto-, kilo-) to create proportional sub-units of the meter.
Centimeters are the standard unit for everyday measurement in nearly every country outside the United States. They are used for body height, clothing sizes, rainfall, paper formats (A4 is 21 × 29.7 cm), screen dimensions, and most consumer product specifications.
Developed in France during the late 18th century as part of the metric system designed by the French Academy of Sciences. Formally adopted in France in 1795 and ratified internationally through the Metre Convention signed in Paris in 1875.
Nail to Centimeter conversion formula
The relationship between nails and centimeters:
To convert nails to centimeters, multiply the value in nails by 5.715. To reverse, multiply centimeters by 0.1749781277.
How to use this converter
Type a value into the calculator. The result in centimeters updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Centimeter to Nail converter for the reverse direction.
Step-by-step: convert nails to centimeters
- Write down the value in nails (nail).
- Multiply that value by the factor 5.715.
- The product is the equivalent value in centimeters (cm).
- To reverse, multiply the centimeter value by 0.1749781277.
Worked examples
Example 1 — Convert 1 nail to cm:
1 × 5.715 = 5.715 cm
Example 2 — Convert 100 nail to cm:
100 × 5.715 = 571.5 cm
Real-world example — Ruler-scale measurements
A 30-nail school ruler converts cleanly to centimeters — useful when buying a desk accessory from a retailer whose product specs use a different unit.
30 nail × 5.715 = 171.45 cm
Real-world example — Hardware-scale dimensions
A 10-nail fastener or component is about as long as a thumbnail. Mechanics and DIY enthusiasts convert between nails and centimeters daily when mixing metric and imperial tools.
10 nail × 5.715 = 57.15 cm
Real-world example — Postcard and small-object dimensions
A postcard is about 5 nails wide. Converting to centimeters is essential for international postal addressing forms that ask for dimensions in different units across countries.
5 nail × 5.715 = 28.575 cm
Nail to Centimeter conversion table
Standard reference values for converting nails to centimeters:
| Nail [nail] | Centimeter [cm] |
|---|---|
| 0.01 | 0.05715 |
| 0.1 | 0.5715 |
| 1 | 5.715 |
| 2 | 11.43 |
| 3 | 17.145 |
| 4 | 22.86 |
| 5 | 28.575 |
| 10 | 57.15 |
| 20 | 114.3 |
| 30 | 171.45 |
| 40 | 228.6 |
| 50 | 285.75 |
| 100 | 571.5 |
| 500 | 2857.5 |
| 1000 | 5715 |
Frequently asked questions
How many centimeters is 1 nail?
How do I convert nails to centimeters?
How do I convert centimeters back to nails?
How many centimeters is 100 nails?
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Imperial / US Customary (26 units)
Sources & references
Conversion factor (1 nail = 5.715 cm) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.