$40K in Hanoi = $78,378 in Seoul
Your $40K salary in Hanoi (COL 37) has the same purchasing power as $78,378 in Seoul (COL 73). Seoul is more expensive — you'd need 96% more to maintain the same lifestyle.
Budget breakdown — $40K in both cities
What $40K actually buys you in each city after taxes and core expenses.
| Expense | Hanoi $40K | Seoul $40K (same salary) |
|---|---|---|
| Monthly take-home | $2,728 | $2,228 |
| 1BR rent | $450 | $900 |
| Groceries | $380 | $380 |
| Transport | $150 | $150 |
| Utilities | $50 | $80 |
| Internet | $15 | $25 |
| Left after essentials | $1,683/month | $693/month |
Frequently asked questions
What is $40K in Hanoi equivalent to in Seoul?
$40K in Hanoi (COL index 37) has the same purchasing power as $78,378 in Seoul (COL index 73). That's 96% more than your current salary.
If I move from Hanoi to Seoul keeping my $40K salary, will I be better off?
Not necessarily. Core expenses in Seoul are higher, so on the same $40K salary you'd have $990 less per month. You'd need to earn $78,378 to maintain the same standard of living.
How is the salary equivalent calculated?
The equivalent salary is calculated by multiplying your current salary by the ratio of the two cities' overall cost of living indices: $40K × (73 ÷ 37) = $78,378. This adjusts for differences in housing, food, transport, and general cost of living.
Other salary amounts — Hanoi to Seoul
Equivalency uses overall COL index ratio. Take-home uses simplified federal/state brackets. Zillow · BLS · Numbeo · Q1 2026 · For general guidance only