Bank of Korea Exchange Rate API

Official Bank of Korea (South Korea) daily exchange rates as JSON: 52 currencies, history back to 1964. The published KRW rates required for tax, audits, and compliant invoicing.

Bank of Korea official daily exchange rates as JSON: 52 currencies against the KRW, history back to 1964. Latest table on every plan. Get your API key.

About Bank of Korea

The Bank of Korea publishes the won's daily basic exchange rates (매매기준율, the market average rate set by Seoul Money Brokerage each business morning at 08:10 KST) for around 40 active currencies through its ECOS statistics system, with history reaching back to 1964.

• Official website: www.bok.or.kr/eng/main/main.do
• Official rate publication: ECOS — Economic Statistics System (3.1.1.1)

Quick start

One request for the pair you need — USD to KRW at the official Bank of Korea rate:

curl "https://allratestoday.com/api/v1/central-bank/bok/latest?source=USD&target=KRW" \
  -H "Authorization: Bearer art_live_your_key"

Or the bank's full published table:

curl "https://allratestoday.com/api/v1/central-bank/bok/latest" \
  -H "Authorization: Bearer art_live_your_key"

On paid plans, any historical date or a daily time series:

curl "https://allratestoday.com/api/v1/central-bank/bok/history?source=USD&target=KRW&from=2025-01-01" \
  -H "Authorization: Bearer art_live_your_key"

Latest published rates (2026-08-06)

The most recent table as published by Bank of Korea — exactly what the /latest endpoint returns right now. Values are KRW per 1 unit of each currency:

Base	Quote	Type	Rate
AED	KRW	reference	387.94
ARS	KRW	reference	0.95
AUD	KRW	reference	1005.55
BDT	KRW	reference	11.51
BHD	KRW	reference	3778.81
BND	KRW	reference	1112.04
BRL	KRW	reference	278.15
CAD	KRW	reference	1016.81
CHF	KRW	reference	1765.66
CNY	KRW	reference	211.23
CZK	KRW	reference	68.06
DKK	KRW	reference	220.22
EGP	KRW	reference	28.61
EUR	KRW	reference	1646.36
GBP	KRW	reference	1918.78
HKD	KRW	reference	181.65
HUF	KRW	reference	4.55
IDR	KRW	reference	0.0795
ILS	KRW	reference	474.13
INR	KRW	reference	14.98
JOD	KRW	reference	2009.59
JPY	KRW	reference	9.0372
KWD	KRW	reference	4639.53
KZT	KRW	reference	3.03
MNT	KRW	reference	0.4
MXN	KRW	reference	82.65
MYR	KRW	reference	348.11
NOK	KRW	reference	149.55
NZD	KRW	reference	838.71
PHP	KRW	reference	23.46
PKR	KRW	reference	5.13
PLN	KRW	reference	382.93
QAR	KRW	reference	390.81
RUB	KRW	reference	17.6
SAR	KRW	reference	379.37
SEK	KRW	reference	150.19
SGD	KRW	reference	1112.04
THB	KRW	reference	43.05
TRY	KRW	reference	29.95
TWD	KRW	reference	44.14
USD	KRW	reference	1424.8
VND	KRW	reference	0.054299999999999994
ZAR	KRW	reference	87.29

Node.js / TypeScript client

A dedicated zero-dependency npm package wraps these endpoints — bok-exchange-rate:

npm install bok-exchange-rate

import { getRate } from 'bok-exchange-rate';

const pair = await getRate('USD', 'KRW', { apiKey: 'art_live_...' });
console.log(pair.rate, pair.rate_date);

Zero dependencies, TypeScript types included, and it runs anywhere fetch exists — Node 18+, Bun, Deno, and edge runtimes.

Why use the official Bank of Korea rate?

Live market rates move continuously, but tax filings, customs declarations, audits, and statutory accounting in South Korea and beyond typically require the official rate published by Bank of Korea for a given date — a fixed, citable number that never changes after publication. This API serves those published tables with the bank's own rate_date on every response; weekends and holidays return the most recent published date, which is the rate compliance rules require you to apply.

Pairs the bank doesn't print directly are resolved from its table (inverse or cross via KRW) and explicitly flagged "derived": true — so what the bank printed and what was computed are never confused.

Endpoints

• GET /api/v1/central-bank/bok/latest — latest table or single pair (all plans)
• GET /api/v1/central-bank/bok/{YYYY-MM-DD} — the table for any date (paid plans)
• GET /api/v1/central-bank/bok/history — daily time series, up to 5,000 rows (paid plans)
• GET /api/v1/central-bank/bok/availability — publication calendar: the dates the bank actually published (all plans)

Full parameter reference in the API documentation. Every request counts toward your plan's monthly quota — rates change once per business day, so caching a day's table locally makes a small quota go far.

Frequently asked questions

Is there an API for Bank of Korea exchange rates?

Yes — this one. Official daily KRW rates as clean JSON, latest table on every plan including free.

How often are the rates updated?

Bank of Korea publishes once per business day; the API ingests each new table shortly after publication (latest: 2026-08-06).

Are these the official rates?

Yes — ingested from Bank of Korea's own published data, served unmodified with the bank's publication date. Anything computed rather than published is flagged derived.

Other central banks

All covered central banksCoverage, endpoints, and plans US Federal Reserve (H.10)United States — official USD rates Bank of EnglandUnited Kingdom — official GBP rates People's Bank of China (CFETS)China — official CNY rates Reserve Bank of AustraliaAustralia — official AUD rates Bank of RussiaRussia — official RUB rates Central Bank of TürkiyeTürkiye — official TRY rates Banco Central do Brasil (PTAX)Brazil — official BRL rates Bank IndonesiaIndonesia — official IDR rates Reserve Bank of IndiaIndia — official INR rates Bank of CanadaCanada — official CAD rates Bank Negara MalaysiaMalaysia — official MYR rates Central Bank of Sri LankaSri Lanka — official LKR rates Czech National BankCzech Republic — official CZK rates European Central BankEurozone — official EUR rates Narodowy Bank PolskiPoland — official PLN rates Norges BankNorway — official NOK rates Sveriges RiksbankSweden — official SEK rates Central Bank of NigeriaNigeria — official NGN rates Central Bank of KuwaitKuwait — official KWD rates Central Bank of BahrainBahrain — official BHD rates Central Bank of AzerbaijanAzerbaijan — official AZN rates Central Bank of Bosnia and HerzegovinaBosnia and Herzegovina — official BAM rates Bulgarian National BankBulgaria — official EUR rates Central Reserve Bank of PeruPeru — official PEN rates Bank of JapanJapan — official JPY rates Hong Kong Monetary AuthorityHong Kong — official HKD rates Bank of IsraelIsrael — official ILS rates Central Bank of ArgentinaArgentina — official ARS rates South African Reserve BankSouth Africa — official ZAR rates Swiss National BankSwitzerland — official CHF rates Reserve Bank of New ZealandNew Zealand — official NZD rates