Units and Dimensions

Get to the root of physics by understanding how we measure the world — with units, dimensions, and the tricks to make equations make sense.

Units

Explore the foundations of measurement, including base and derived units used across physics.


Learn More →
Dimensions and Dimensional Analysis

Learn how physical quantities are described using base dimensions like length, mass, and time.


Learn More →
Unit Conversions

Learn how to confidently convert between units using ratios and dimensional consistency.


Learn More →
🎯

Ready to take IJSO-style units and dimensions practice questions?

Apply your knowledge with our collection of IJSO-style units and dimensions problems.

View Units and Dimensions Practice Questions