# How to calculate Real GDP from quarterly change

How do I calcualte a countries Real GDP from QoQ changes?

Example - Australia 2018 - Real GDP was 1432195178668.32 \$Billion 2019 Q1 was 0.5%
2019 Q2 was 0.6% 2019 Q3 was 0.4%

How do I calculate real GDP on Q3?

Then, simply take the average of the four quarters if you want the annual value: $$\frac{(Q1.2019 + Q2.2019 + Q3.2019 + Q4.2019)} {4}$$