Convert Nail to Perch
Convert nails to perches instantly. 1 nail = 0.0113636364 perch — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Perch 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.
Perch
A perch is an Imperial unit of length identical to the rod — 16.5 feet (about 5.03 m). The names 'rod', 'perch', and 'pole' all refer to the same surveying unit and differ only by regional preference.
Like the rod, the perch derives from medieval English land-surveying. The name 'perch' was particularly common in legal land descriptions in Ireland and parts of the UK.
Perches appear in legacy land descriptions in Ireland, the UK, and historical US documents. Modern usage is rare.
Medieval English surveying origin; identical to the rod since 1620; became exact via the 1959 International Yard and Pound Agreement.
Nail to Perch conversion formula
The relationship between nails and perches:
To convert nails to perches, multiply the value in nails by 0.0113636364. To reverse, multiply perches by 88.
How to use this converter
Type a value into the calculator. The result in perches updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Perch to Nail converter for the reverse direction.
Step-by-step: convert nails to perches
- Write down the value in nails (nail).
- Multiply that value by the factor 0.0113636364.
- The product is the equivalent value in perches (perch).
- To reverse, multiply the perch value by 88.
Worked examples
Example 1 — Convert 1 nail to perch:
1 × 0.0113636364 = 0.0113636364 perch
Example 2 — Convert 100 nail to perch:
100 × 0.0113636364 = 1.1363636364 perch
Real-world example — Children's height milestones
A 150-nail-tall child measures a value in perches that's commonly used for theme-park ride height requirements when travelling between countries that use different measurement units.
150 nail × 0.0113636364 = 1.7045454545 perch
Real-world example — Body height conversion
You enter your height as 180 nails into an international job or visa application. The form then asks for the same value in perches — converting between these adjacent units is one of the most-used length conversions globally.
180 nail × 0.0113636364 = 2.0454545455 perch
Real-world example — Furniture and large objects
A 72-nail piece of furniture converts to a value in perches that's easier to mentally compare with room dimensions. This is the typical workflow when shopping internationally and product specs use a different unit than your room measurements.
72 nail × 0.0113636364 = 0.8181818182 perch
Nail to Perch conversion table
Standard reference values for converting nails to perches:
| Nail [nail] | Perch [perch] |
|---|---|
| 0.01 | 0.0001136364 |
| 0.1 | 0.0011363636 |
| 1 | 0.0113636364 |
| 2 | 0.0227272727 |
| 3 | 0.0340909091 |
| 4 | 0.0454545455 |
| 5 | 0.0568181818 |
| 10 | 0.1136363636 |
| 20 | 0.2272727273 |
| 30 | 0.3409090909 |
| 40 | 0.4545454545 |
| 50 | 0.5681818182 |
| 100 | 1.1363636364 |
| 500 | 5.6818181818 |
| 1000 | 11.3636363636 |
Frequently asked questions
How many perches is 1 nail?
How do I convert nails to perches?
How do I convert perches back to nails?
How many perches is 100 nails?
Popular length unit conversions
Convert Nail to other length units
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Metric / SI (4 units)
Imperial / US Customary (26 units)
Sources & references
Conversion factor (1 nail = 0.0113636364 perch) 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.