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Equator vs Prime Meridian — Difference (with Table & FAQs)

The equator is an imaginary line that divides Earth horizontally into Northern and Southern hemispheres. The Prime Meridian divides Earth vertically into E

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TL;DR: The equator is an imaginary line that divides Earth horizontally into Northern and Southern hemispheres. The Prime Meridian divides Earth vertically i…

Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated Jul 23, 2026

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The main difference between Equator and Prime Meridian: The equator is an imaginary line that divides Earth horizontally into Northern and Southern hemispheres. The Prime Meridian divides Earth vertically into E

Equator vs Prime Meridian — Comparison Table

BasisEquatorPrime Meridian
DirectionRuns East-West around EarthRuns North-South pole to pole
HemispheresDivides North and South hemispheresDivides East and West hemispheres
Latitude/LongitudeAt 0° latitudeAt 0° longitude
LengthLongest parallel around EarthOne of 360 meridians
LocationEquidistant from both polesPasses through Greenwich, London

Key Points

  • The equator is a horizontal line dividing Earth into North and South
  • The Prime Meridian is a vertical line dividing Earth into East and West
  • Both are imaginary reference lines used for location mapping
  • Together they form the basis of the geographic coordinate system

Frequently Asked Questions

What is the difference between the Equator and the Prime Meridian?

The Equator is the 0° latitude line running east–west, dividing Earth into the Northern and Southern Hemispheres. The Prime Meridian is the 0° longitude line running north–south, dividing Earth into the Eastern and Western Hemispheres.

Which one measures latitude and which measures longitude?

The Equator is the reference line (0°) for latitude; the Prime Meridian is the reference line (0°) for longitude.

Where does the Prime Meridian pass?

The Prime Meridian passes through Greenwich in London, UK, and is used as the basis for standard time (GMT).

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