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Conversion Formula:
Convert Link to Picometer (li to pm) instantly with accurate, readable results.
Use our Length Unit Converter to quickly convert between meters, kilometers, feet, inches, miles, and more. This powerful unit conversion tool supports both metric and imperial systems, making it ideal for travel, engineering, education, and everyday use. Whether you're calculating distances or comparing measurements, our length unit conversion calculator ensures fast and accurate results every time.
Link - traditional surveying length unit
Link is a historical unit used in land surveying as 1/100 of a Gunter’s chain. Used on cadastral maps, field books, and deeds throughout the English-speaking world.
- Symbols: l, lk, or lnk (varies)
- System: Imperial/US customary (historic surveying)
- Exact relations: 1 link = 1/100 chain = 1/25 rod = 0.66 ft = 7.92 in
- Metric equivalents: 1 link = 0.201168 m (exact); 100 links = 20.1168 m (1 chain)
- Typical examples: parcel frontage like “12 ch 37 lks”; old plats listing sides in chains and links
Picometer (pm) — SI unit equal to one trillionth of a meter
Used to express atomic and subatomic dimensions such as bond lengths and ionic/atomic radii in chemistry and materials science
- Symbol: pm
- System: SI derived unit
- Exact relations: 1 pm = 10⁻¹² m = 0.001 nm = 10⁻⁶ µm = 0.01 Å = 1,000 fm
- Imperial/US equivalents: 1 pm ≈ 0.00000000003937007874 in
- Typical examples: covalent bond lengths ~100–200 pm; Bohr radius of hydrogen ~53 pm; atomic radii tens to a few hundred pm