Why do economists change current dollars into consant dollars to compare the purchasing power of min wage over time?

Economists convert current dollars into constant dollars to adjust for inflation and accurately assess the purchasing power of minimum wage over time. Current dollars reflect nominal values that can be influenced by rising prices, while constant dollars account for changes in the price level, allowing for a clearer comparison of real income and living standards. This process helps identify whether wage increases keep pace with inflation and whether workers can maintain their purchasing power across different time periods.