On the ECB reference rate of October 2, 2026, 1000 Indonesian rupiah buys ₩75 — the lowest in 67 days, against a 67-day high of ₩86.
For an Indonesian visitor, that is about 13% less buying power than a month-scale peak: the same Seoul day now costs roughly 160,000 IDR more than a week earlier.
This post answers how much 1000 IDR buys today by source, whether to exchange now or wait, what a day in Seoul costs in rupiah, and where to do the exchange.
Indonesian Rupiah to Korean Won: How Much Is 1000 IDR Today?
| ECB reference rate, October 2, 2026 | ₩75 (67-day low; 7-day change -0.7%) |
|---|---|
| 67-day high / low | ₩86 / ₩75 |
| Korea Eximbank mid rate, October 2, 2026 | ₩76 |
| Eximbank wire buy (TTS) / wire sell (TTB) | ₩77 / ₩75 |
| Wise converter snapshot, October 5, 2026 | ≈ ₩76 |
| Won lost per 1000 IDR vs the 67-day high | ₩11 (-12.8%) |
| Source | Date | 1000 IDR |
|---|---|---|
| ECB reference rate | Oct 2, 2026 | ₩75 — 67-day low (high ₩86) |
| Korea Eximbank mid | Oct 2, 2026 | ₩76 |
| Wise converter | Oct 5, 2026 | ≈ ₩76 |
These small gaps are normal intraday and brand variation, not an error.
The first thing to check is the date on the number — the confirmed rates here are October 2 (ECB and Eximbank) and an October 5 snapshot, so any rate you see elsewhere should carry its own date.
For a same-day check, koreankorea.com/idr-to-krw-today/ rebuilds each morning with the ECB rate, Korean bank buy/sell rates and a chart.
Is Now a Good Time to Exchange Rupiah for Won?
At ₩75, 1000 IDR buys ₩11 fewer than at the 67-day high of ₩86 — a drop of about 13% (86 → 75 is -12.8%).
The Eximbank board prices the wire buy at ₩77 and the wire sell at ₩75, so a round trip through the bank loses ₩2 per 1000 IDR — about 2.6% of the mid rate, before any fixed fee.
No support level under ₩75 is confirmed, so waiting can mean an even lower number.
If the trip starts within days, exchange only the cash you need now and put the rest on card; if the trip is months away, checking the rate again closer to departure costs nothing.
Do not count on a rebound — the rate only confirms the low, not a floor.
What Does a Day in Seoul Cost in IDR at Today’s Rate?
At the October 2, 2026 rate, a ~₩100,000 day in Seoul (transit plus two meals plus a cafe) costs about 1,320,000–1,340,000 IDR — call it about 1,333,000 IDR (100,000 ÷ 75 × 1000).
A week earlier the same day cost about 1,160,000 IDR, so the rupiah weakness adds roughly 160,000–170,000 IDR per day.
At the 67-day high of ₩86, the same ₩100,000 came to about 1,160,000 IDR as well (100,000 ÷ 86 × 1000 ≈ 1,163,000).
Budget about 1,320,000–1,340,000 IDR per Seoul day at the current rate, and add a buffer if you planned costs at the old rate.
A longer trip should be re-budgeted line by line rather than scaled from a single day.
Seoul Costs Item by Item, in Rupiah
Each line converts a fixed Korean price into rupiah at the 75–76 KRW per 1000 IDR rate of October 2, 2026.
Each line also shows the cost at the 67-day high of ₩86, which is what a budget written a month ago assumed.
The gap is about 13% on every line, because everything scales with one rate.
If your budget sheet still uses the September numbers, raise each cash line by about 13% before you leave.
Exchanging Rupiah in Korea vs in Indonesia — and the Steps
Which side — Indonesian changers or Korean counters — gives the better IDR-to-KRW spread could not be verified from primary rate boards, so compare same-day boards on both sides before you change a large amount.
Airport counters are for small amounts only, and a local ATM withdrawal is the usual fallback when cash runs out.
Keep this order in mind at a changer or a card terminal:
- Compare the same-day board rate at two or more authorized counters before exchanging a large sum.
- Use the airport counter only for a small amount to cover the ride into town.
- Keep the receipt at an authorized changer — you may need it to change won back later.
- When a card terminal asks "Pay in KRW?", always choose NO and pay in IDR — Dynamic Currency Conversion adds a 3–8% surcharge.
- If cash runs short in Korea, withdraw from a local ATM rather than changing leftover won at the end.
Screen rates are mid-market, and changers and card issuers add their own margin — so judge a booth by the amount you actually receive, not the number on the screen.
A Quick Mental Rule for Converting IDR to KRW
The fast rule at the current rate: drop one zero from the IDR amount and take about three-quarters of it — 100,000 IDR ≈ ₩7,560 at the October 2026 snapshot.
The Bali price-tag examples below are converted at the round ~0.09 KRW per IDR reference commonly used for such lists, not by the fast rule above: 10,000 Rp ≈ ₩900 (bottled water), 50,000 Rp ≈ ₩4,500 (nasi goreng), 1,000,000 Rp ≈ ₩90,000 (a mid-range hotel night).
Watch the notation trap: Indonesian price tags use periods as thousand separators, so "Rp50.000" is 50,000 rupiah (about ₩4,500), not 50.
If a tag looks ten times too cheap, it is probably the dot that fooled you.
For Korean travellers to Bali, the weaker rupiah means your won buys slightly more than in September — and the standard route is KRW → USD first, then IDR locally, because direct KRW-to-IDR rates in Korea are poor.
If my trip were within days, I would exchange only the cash I need now, because the spread alone costs about 2.6% round trip and I would rather not pay it twice on the same money.
What I check first is the date on any rate I see online, not the number itself — a month-old figure in this market is off by 13%.
Related posts
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Sources
- Wise 1000 IDR ≈ 78 KRW; site rate 75.6 KRW on 2026-10-05 (wise.com)
- DCC 3–8%; exchange KRW→USD→IDR strategy; mid vs actual rate (wisepp.com)
- 1 KRW ≈ 11–12 IDR; mental math ÷11 rule; Bali price examples (sudanghelp.co.kr)
What to Watch Next
- October 2, 2026 — ECB reference rate 1000 IDR = ₩75, a 67-day low (7-day change -0.7%; 67-day range ₩75–₩86).
- September 22, 2026 — checked rate then was 1 KRW ≈ 12.84 IDR (1000 IDR ≈ ₩78), so the rupiah was already weakening in late September.
- October 5, 2026 — Wise live snapshot 1 IDR = 0.07556 KRW, i.e. 1000 IDR ≈ ₩76; 100,000 IDR ≈ ₩7,560.
- Figures in this post are as of October 2, 2026 (ECB/Eximbank), with the Wise snapshot of October 5, 2026 noted separately.
FAQ
Q. How much is 1000 Indonesian rupiah in Korean won today?
On the ECB reference rate of October 2, 2026, 1000 IDR = ₩75, a 67-day low; Wise’s October 5 snapshot showed ≈ ₩76. Check a dated source on the day you exchange.
Q. Is now a good time to exchange IDR for KRW?
The rate is at its 67-day low with no confirmed floor under it, so waiting can mean a lower number. If your trip is near, exchanging what you need now and using cards for the rest limits the risk.
Q. What does a day in Seoul cost in rupiah at the current rate?
A ~₩100,000 day (subway plus two meals plus a cafe) comes to about 1,320,000–1,340,000 IDR at the October 2, 2026 rate — about 170,000 IDR more than a week earlier.
Q. Should I exchange rupiah in Korea or in Indonesia?
No confirmed comparison exists, so compare the same-day board at authorized counters on both sides before changing a large amount. Airports are for small amounts, and a local ATM is the fallback.
Q. Why did the rupiah fall to a 67-day low?
The fall itself is confirmed by the rate data, but no stated reason from Bank Indonesia or any macro cause could be confirmed in recent sources, so this post does not name one.
Check today’s dated rate before you exchange — the number moves daily.
Cover photo: Currency exchange counter at ZBAA T3E Departures (20180823110519) by N509FZ — CC BY-SA 4.0
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