Convert Hand to Nail
Convert hands to nails instantly. 1 hand = 1.7777777778 nail — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Nail to Hand converter for the reverse conversion.
Units explained
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
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 to Nail conversion formula
The relationship between hands and nails:
To convert hands to nails, multiply the value in hands by 1.7777777778. To reverse, multiply nails by 0.5625.
How to use this converter
Type a value into the calculator. The result in nails updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Nail to Hand converter for the reverse direction.
Step-by-step: convert hands to nails
- Write down the value in hands (hh).
- Multiply that value by the factor 1.7777777778.
- The product is the equivalent value in nails (nail).
- To reverse, multiply the nail value by 0.5625.
Worked examples
Example 1 — Convert 1 hh to nail:
1 × 1.7777777778 = 1.7777777778 nail
Example 2 — Convert 100 hh to nail:
100 × 1.7777777778 = 177.7777777778 nail
Real-world example — Body height conversion (reverse direction)
You measure 1.75 hands tall and need to fill in a gym membership form or medical record that asks for height in nails. This is the most-used everyday length conversion in metric-using countries.
1.75 hh × 1.7777777778 = 3.1111111111 nail
Real-world example — Pet and accessory dimensions
A 3-hand dog leash equals a tidy round value in nails. Pet-supply shopping frequently mixes the two units across product specifications.
3 hh × 1.7777777778 = 5.3333333333 nail
Real-world example — Fabric and tailoring
One hand of fabric converts to a value in nails commonly used for seam allowances. Garment patterns frequently switch between the two units on a single instruction sheet.
1 hh × 1.7777777778 = 1.7777777778 nail
Hand to Nail conversion table
Standard reference values for converting hands to nails:
| Hand [hh] | Nail [nail] |
|---|---|
| 0.01 | 0.0177777778 |
| 0.1 | 0.1777777778 |
| 1 | 1.7777777778 |
| 2 | 3.5555555556 |
| 3 | 5.3333333333 |
| 4 | 7.1111111111 |
| 5 | 8.8888888889 |
| 10 | 17.7777777778 |
| 20 | 35.5555555556 |
| 30 | 53.3333333333 |
| 40 | 71.1111111111 |
| 50 | 88.8888888889 |
| 100 | 177.7777777778 |
| 500 | 888.8888888889 |
| 1000 | 1777.7777777778 |
Frequently asked questions
How many nails is 1 hand?
How do I convert hands to nails?
How do I convert nails back to hands?
How many nails is 100 hands?
Popular length unit conversions
Convert Hand to other length units
Show all Hand conversions
Metric / SI (4 units)
Imperial / US Customary (26 units)
Sources & references
Conversion factor (1 hh = 1.7777777778 nail) 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.