Convert locally between a Korean jeonse lump-sum deposit and an equivalent monthly rent - using the statutory conversion formula, no upload.
No. Everything runs in your browser - your file never leaves your device. How this is verifiable
Jeonse (전세) is a housing-finance arrangement unique to South Korea: instead of paying an ongoing monthly rent, the tenant deposits one large lump sum (often 50 to 80 percent of the property's value), which is repaid in full at the end of the lease - no other major economy uses this model in this form. Because many landlords nowadays prefer a monthly rent instead (or in addition), converting between a jeonse deposit and a monthly rent is an everyday calculation when apartment-hunting.
This tool converts in both directions: from a jeonse deposit to the equivalent monthly rent, or the reverse, using the formula from Article 9 of the Enforcement Decree of the Housing Lease Protection Act (Jutaek Imdae Chahaebeop). It also shows the statutory conversion-rate ceiling: the lower of (the Bank of Korea base rate plus 2 percentage points) and the absolute 10 percent per year cap - both figures are fixed statutory values; only the base rate itself fluctuates, which is why it is a separate input field rather than a hardcoded number.
Everything runs locally in your browser as plain JavaScript - your amounts are never uploaded, sent anywhere or stored.
| Input formats | Form inputs (no file) |
|---|---|
| Processing | Locally in your browser (JavaScript) |
| File upload | None |
Limitations: A pure conversion via the statutory formula, based on a conversion rate you enter yourself. The current Bank of Korea base rate is NOT fetched automatically (it changes several times a year) - enter the current value yourself to see the real statutory ceiling. Does not check whether a specific agreement is enforceable. South Korea only, not legal advice.
No. The conversion runs entirely locally in the browser; nothing is sent or stored.
A housing arrangement unique to South Korea: one large lump-sum deposit instead of an ongoing monthly rent, repaid in full at the end of the lease.
You enter it yourself - the Bank of Korea base rate changes several times a year via monetary-policy decisions, so it is not hardcoded in the tool.
The statutory minimum of (base rate plus 2 percentage points) and 10 percent per year - this tool shows it for comparison with your own conversion rate.
Yes, the "target deposit for monthly rent" field models an additional deposit alongside the monthly rent (a half-jeonse, half-monthly-rent arrangement is common in South Korea).
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