How to read this table
The revenue column is the amount from each company's most recent annual report, and the change compares it with the fiscal year before. Nothing is converted: a company reporting in won is shown in won and one reporting in dollars in dollars. Two amounts sitting in the same column are not directly comparable.
Fiscal years differ too. Most Korean companies close in December and many US companies do not, so the same "2025" can mean two different twelve-month periods. Company pages therefore show period start and end dates rather than a fiscal year label.
Comparing companies across currencies and fiscal calendars means working in ratios rather than amounts: a margin or a growth rate has no unit and needs no exchange rate. That is what the calculators on this site do — take the amounts off a filing, turn them into a ratio, and place it in the distribution of these fifty companies.