The similarity between Macroeconomics and Microeconomics is that they both are part of economic theory where microeconomics is about as an individual and macroeconomic is about the economy as a whole. Both microeconomics and macroeconomics help in determining economic policies, which helps in contributing higher GDP to the economy. Microeconomics and macroeconomics have similar tools to calculate the economic trends and equilibrium, being macroeconomics calculate aggregate factors and microeconomics calculate individual factor.