The formula for calculating Impact Factor is straightforward:
IF = (Citations in Year 1 + Citations in Year 2) / (Total number of articles published in Year 1 + Year 2)
For example, if a journal has 200 citations in 2022 and 300 citations in 2023, and it published 50 articles in 2022 and 70 articles in 2023, the Impact Factor for 2023 would be: