Millimetre (mm)
A millimetre (American spelling: millimeter, symbol mm) is one thousandth of a metre (the metre is the International System of Units (SI) base unit of length). The millimetre is part of a metric system. The corresponding unit of area is the square millimetre and the corresponding unit of volume is the cubic millimetre.
Metric
- Kilometre (km)1×10⁻⁶
- Metre (m)1×10⁻³
- Decimetre (dm)0.01
- Centimetre (cm)0.1
- Millimetre (mm)1
- Micrometre (µm)1,000
- Nanometre (nm)1,000,000
- Angstrom (Å)10,000,000
Nautical
- Nautical mile5.4×10⁻⁷
- Fathom5.47×10⁻⁴
Astronomical
- Parsec (pc)3.24×10⁻²⁰
- Light year1.06×10⁻¹⁹
- Astronomical unit (AE)6.68×10⁻¹⁵
- Light minute5.56×10⁻¹⁴
- Light second3.34×10⁻¹²