Everyday living
Commute versus renting calculator
Compare the extra cost of renting near campus with the commute time you could save. Add a dormitory option or calculate a rent ceiling using your own conditions.
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How to compare commuting, renting and dormitory costs
- Choose one semester, one year, two years or four years. Enter campus days per week and the one-way trip and transport cost from home. For a 30-minute trip, enter 0 hours 30 minutes. The return is assumed equal and calculated automatically. Use each cost's stated basis; all money remains KRW.
- Enter rent alone, combined management fees and utilities, extra living costs versus home and the one-way trip from the rental. Dormitory and other vacation-residence travel times are one way too. You do not need every detailed setting to start.
- After the first result, adjust detailed costs, vacation arrangements, the contract and the deposit. Add a dormitory only if it is available to you. Do not count included meals or combined and itemized costs twice.
- If useful, enter your own value of time to read the rent ceiling. When saving, copying or printing, check the conditions and excluded items too.
Teaching periods and payment periods are different
Term and vacation campus days, rent-payment months, occupied months, dormitory semesters and vacation stays, and deposit tie-up periods are separate. The editable starting academic calendar is an example, not a standard for schools in Korea or elsewhere. Sixteen teaching weeks are not automatically treated as four months. Monthly passes use payment months rather than campus days and are not added to daily fares.
Rent remains payable if you return home for vacation while keeping the contract. Vacation campus travel uses the place where you actually stay. If you select other vacation accommodation but leave its cost blank, that cost is listed as excluded. Rent owed beyond the comparison is shown as a separate obligation.
For partial occupancy with vacation in the rental, enter how many occupied months fall in vacation, or 0 if none. The remainder is term occupancy; each segment's campus days are allocated in proportion to occupied months. For example, four occupied months entirely in vacation means four vacation rental months. Older saved and shared conditions restore their earlier term-first allocation explicitly; check it against your actual schedule.
Combined costs, itemized costs and deposits
Combined management fees and utilities and their itemized amounts are alternative ways to enter the same costs. The living-cost difference and separate home/rental food and other costs are alternatives too. A difference versus home may be negative; ordinary spending, deposits and time may not. Blank optional fields are not filled using assumed averages.
Cash spending includes rent, living costs and actual interest, excluding assumed refundable deposit principal. Adjusted cost adds your selected own-capital opportunity cost. Upfront funds include your deposit contribution, initial purchases and actual prepayments; they are not added again to period costs. Deposit refunds and loan principal repayment remain separate obligations; refund safety is not assessed.
A rent ceiling is not a recommendation or income
Leaving your time value blank defers monetary valuation; entering 0 assigns no monetary value. Saved hours × time value is not money you will earn. Other rental costs can exceed the baseline even at zero rent. A longer rental commute also affects the ceiling.
Try the campus days, rent and vacation contract conditions that could change the conclusion. Also consider sleep, fatigue, study conditions, responsibilities of independent living, dormitory rules and vacation accommodation. These are not assigned arbitrary satisfaction scores or money values. Compare your remaining schedule with the free time calculator or a separate cash and spending plan with the cash runway calculator.
See About Furseka Calc and the privacy information for operating information and storage scope. Official fares, market averages and school-specific information are not fetched automatically.
Formula and assumptions
Compare costs before family support and commute time over the same period. Cash spending, costs including selected opportunity cost and upfront own funds are separate figures. Assumed refundable deposit principal is excluded from spending; tied-up funds and loan principal are shown separately. Cheaper or slower options are identified too. Without a time value, monetary valuation of saved time is deferred.
Why the result can vary
The initial 2 semesters/year, 16 teaching weeks/semester and 4 cost months/semester are editable examples, not academic standards for any country. Holidays, cancelled classes and exam days are not adjusted automatically; entered actual campus days take priority. For partial rental occupancy, specify vacation occupancy separately; campus days in each segment are allocated by occupied-month proportions. Two- and four-year comparisons repeat the same conditions and do not predict leave, military service, price changes or timetable changes. Missing required costs prevent a result; blank optional costs are listed as excluded.
Example
Fictional case A · Paying rental costs through vacation for one year
Inputs: Compare 12 months: 32 teaching weeks × 4 campus days = 128 days, with 0 vacation campus days. The home commute is 1 hour 30 minutes one way with KRW 6,000 daily round-trip transport; the rental commute is 10 minutes one way with no transport cost. Return travel is calculated by doubling the one-way duration. Pay KRW 500,000 rent, 50,000 management fees, 50,000 utilities and 150,000 extra living costs each month for all 12 months, plus one KRW 600,000 initial cost. No deposit, loan, opportunity cost or recovery amount applies.
Outcome: Home costs KRW 768,000 and renting costs KRW 9,600,000: an additional KRW 8,832,000. Renting saves approximately 341.33 commute hours at KRW 25,875 per hour saved. The monthly average difference over all 12 months is KRW 736,000; it is not the actual bill for teaching months. With a user-entered time value of KRW 15,000/hour, the rent-only ceiling is approximately KRW 190,667/month (190,666.666… before rounding).
Fictional case B · Separating your deposit contribution from a loan
Inputs: Assume a refundable KRW 10,000,000 deposit is tied up for 12 months. First compare all own funds at a user-entered annual opportunity rate of 3%; then use KRW 4,000,000 own funds and a KRW 6,000,000 loan at 5% annual interest, retaining the 3% own-capital rate. The loan balance stays fixed and only interest is paid.
Reading the result: All own funds produce an assumed KRW 300,000 opportunity cost. The split deposit produces KRW 120,000 opportunity cost plus KRW 300,000 actual interest, totaling KRW 420,000 adjusted cost. Only the KRW 300,000 interest is added to cash spending; deposit principal is excluded. These 3% and 5% inputs are verification assumptions, not rate or return recommendations.
Fictional case C · Meals already included in dormitory payments
Inputs: A KRW 1,200,000 total semester payment already includes KRW 300,000 meals. Use the dormitory for 2 semesters; additional meals and other costs are 0.
Reading the result: Dormitory payments are KRW 1,200,000 × 2 = KRW 2,400,000, not KRW 3,000,000 with included meals counted again. Check the school's actual admission, meal and vacation-stay conditions.
Cautions
- The starting comparison uses costs that differ versus living at home. Equal costs such as tuition, and regular trips home, are excluded.
- Own-capital opportunity cost uses own deposit funds × your annual rate × tie-up months ÷ 12 as a simple-interest approximation. The borrowed part receives interest only, with a fixed balance. Principal-and-interest amortization, changing rates and deposit refund risk are unsupported.
- The ceiling is rent alone, excluding management fees and utilities. Displayed amounts are approximate, rounded to the nearest KRW. Contract safety, affordability and investment returns are not guaranteed.
- Names, schools, addresses and contact details are not collected. Calculation runs in your browser, and device storage starts only if selected. Copied summaries and shared links contain amounts and commute conditions, so check whom you share them with.
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Frequently asked questions
Does a three-hour round trip always mean I should rent?
Commute time alone cannot decide. Campus days, rental costs, vacation arrangements and upfront funds also matter. Without a time value, read money and time separately, and consider sleep, fatigue and study conditions. Time saved is not income.
What changes if I go to campus only three days per week?
When campus days are estimated from teaching weeks × days per week, daily fares and commute time change together. A monthly pass stays the same when payment months are unchanged. With an actual campus-day override, the 3/4/5-day scenarios keep that override.
Can I remove vacation rent if I return home?
Returning home does not end a rent contract. If the contract continues, rent is still owed while occupancy-based living costs may differ. Set contract termination and returning home separately. Even for a one-semester comparison, check payments owed beyond the comparison period.
Why is the deposit not added to total spending?
Assumed refundable principal is tied-up funding rather than consumption expenditure. Your own deposit contribution is part of upfront funds; borrowed principal and repayment obligations are separate. Only actual loan interest and selected own-capital opportunity cost are added on their respective bases. Refund risk is not calculated.
How do I enter a dormitory payment that includes meals?
Enter the total payment and select that meals are included. Mandatory meals already included are not added again; enter only extra food beyond the meal plan. Vacation extensions or other accommodation are actual additional costs. Exclude dormitories you cannot choose.
Why are one-semester and four-year results not always simple multiples?
Campus days, rent-payment months, occupied months, vacation and deposit tie-up periods are calculated separately. Moving and furniture costs occur only the entered number of times; the first moving cost is not automatically repeated every year.