Convert Nail to Hand
Convert nails to hands instantly. 1 nail = 0.5625 hand — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Hand 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.
Hand
A hand is an Imperial unit of length equal to 4 inches (101.6 mm). It is used primarily to measure the height of horses at the withers.
The hand derives from the average breadth of a human hand and was standardised at exactly 4 inches by the Statute of Henry VIII in 1541.
Hands are used worldwide for horse height specification (the typical riding horse is 14–17 hh). Also used in some equestrian-adjacent contexts. The unit is now almost exclusively a horse-measurement convention.
Standardised at 4 inches by Henry VIII in 1541; value became exact in 1959 when the inch was fixed at 25.4 mm.
Nail to Hand conversion formula
The relationship between nails and hands:
To convert nails to hands, multiply the value in nails by 0.5625. To reverse, multiply hands by 1.7777777778.
How to use this converter
Type a value into the calculator. The result in hands updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Hand to Nail converter for the reverse direction.
Step-by-step: convert nails to hands
- Write down the value in nails (nail).
- Multiply that value by the factor 0.5625.
- The product is the equivalent value in hands (hh).
- To reverse, multiply the hand value by 1.7777777778.
Worked examples
Example 1 — Convert 1 nail to hh:
1 × 0.5625 = 0.5625 hh
Example 2 — Convert 100 nail to hh:
100 × 0.5625 = 56.25 hh
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 hands — converting between these adjacent units is one of the most-used length conversions globally.
180 nail × 0.5625 = 101.25 hh
Real-world example — Furniture and large objects
A 72-nail piece of furniture converts to a value in hands 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 × 0.5625 = 40.5 hh
Real-world example — Children's height milestones
A 150-nail-tall child measures a value in hands that's commonly used for theme-park ride height requirements when travelling between countries that use different measurement units.
150 nail × 0.5625 = 84.375 hh
Nail to Hand conversion table
Standard reference values for converting nails to hands:
| Nail [nail] | Hand [hh] |
|---|---|
| 0.01 | 0.005625 |
| 0.1 | 0.05625 |
| 1 | 0.5625 |
| 2 | 1.125 |
| 3 | 1.6875 |
| 4 | 2.25 |
| 5 | 2.8125 |
| 10 | 5.625 |
| 20 | 11.25 |
| 30 | 16.875 |
| 40 | 22.5 |
| 50 | 28.125 |
| 100 | 56.25 |
| 500 | 281.25 |
| 1000 | 562.5 |
Frequently asked questions
How many hands is 1 nail?
How do I convert nails to hands?
How do I convert hands back to nails?
How many hands 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 = 0.5625 hh) 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 Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.