Length and distance are fundamental concepts in English vocabulary. Length refers to how long something is, while distance refers to the space between two points. English uses specific units to measure length and distance, and these units can be used in singular or plural forms depending on the quantity.

Common Units of Length and Distance

Here are the most common units of length and distance in English:
English UnitDescriptionExample Singular UseExample Plural Use
inchA small unit of lengthinchinches
footA larger unit (12 inches)footfeet
yardEqual to 3 feetyardyards
mileA unit for longer distancesmilemiles
millimeter (mm)Small metric unitmillimetermillimeters
centimeter (cm)Metric unit (100 cm = 1 m)centimetercentimeters
meter (m)Base metric unitmetermeters
kilometer (km)Metric unit for long distanceskilometerkilometers

Using Length and Distance in Sentences

Here are some example sentences for each unit, showing how they fit into everyday English.
UnitSingular ExamplePlural Example
inchThe nail is 1 inch long.The screws are 4 inches long.
footHe is 6 feet tall.They walked 3 feet away.
yardThe garden is 2 yards wide.She bought 5 yards of fabric.
mileIt’s 1 mile to the store.We ran 3 miles this morning.
millimeterThe paper is 1 millimeter thick.The parts are 2 millimeters apart.
centimeterThe book is 20 centimeters tall.The room is 100 centimeters wide.
meterThe table is 1 meter long.The wall is 3 meters high.
kilometerThe city is 1 kilometer away.We traveled 10 kilometers yesterday.

Fill in the blank: The screw is 4 _____ long.


  • inches
  • millimeters
Screw lengths are often measured in inches or millimeters, not in yards or miles.

Fill in the blank: The package is 20 _____ tall.


centimeters

Centimeters are a metric unit often used for smaller objects, like packages.

Summary

  • Length refers to how long something is; distance refers to the space between two points.
  • Use singular units for one (e.g., 1 foot) and plural units for more than one (e.g., 2 feet).
  • Common English units include inch, foot/feet, yard, and mile.
  • Metric units include millimeter, centimeter, meter, and kilometer.
  • These units can be used in a variety of everyday contexts, from measuring objects to describing travel distances.

Flashcards (1 of 8)

  • Description: A small unit of length
  • Example Singular Use: 1 inch
  • Example Plural Use: 5 inches
  • English Unit: inch

Last updated: Wed Jun 18, 2025

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