Historical and traditional units

232 units from ancient and traditional measurement systems around the world, each with a conversion to modern units. Browse by civilization or region:

• US customary
  23 units
• Japanese
  18 units
• Ancient Roman
  17 units
• US & Imperial
  15 units
• Chinese
  15 units
• Medieval English
  12 units
• Imperial (British)
  12 units
• Indian subcontinent
  12 units
• French (Ancien Régime)
  11 units
• Scientific
  10 units
• Russian (Imperial)
  10 units
• Biblical (Hebrew)
  9 units
• CGS & old metric
  9 units
• Ancient Greek
  8 units
• Nautical
  5 units
• US land survey
  5 units
• Spanish & Portuguese
  5 units
• Thai
  5 units
• Maya
  5 units
• Ancient Egyptian
  4 units
• Scandinavian
  4 units
• Troy & apothecaries'
  4 units
• Cooking & bar
  3 units
• Metric (SI)
  2 units
• Computing
  2 units
• General & non-SI
  2 units
• Astronomical
  1 units

All historical and traditional units

Values for ancient units are approximate: standards varied between cities, periods and trades.