Bank of Japan Exchange Rate API

Official Bank of Japan rates for 8 Sept 2026: 1 USD = 153.70 JPY. All 1 currency published, history back to 1998. Free JSON API for tax, audits, and compliant invoicing.

Bank of Japan official daily exchange rates as JSON: 1 currency against the JPY, history back to 1998. Latest table on every plan. Get your API key.

About Bank of Japan

The Bank of Japan publishes Tokyo-market USD/JPY reference rates each business day through its time-series statistics portal: the 17:00 JST spot rate and the central rate. These are the Bank's official record of the Tokyo interbank market, with history back to 1998.

• Official website: www.boj.or.jp/en
• Official rate publication: BOJ Time-Series Data Search — foreign exchange rates

Quick start

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

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

Or the bank's full published table:

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

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

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

Latest published rates (2026-09-08)

Below is the current table from Bank of Japan, unmodified — what a call to /latest returns right now, with values JPY per 1 unit of each currency:

Download this table: Excel (.xlsx) CSV (paid plan required)

Base	Quote	Type	Rate
USD	JPY	middle	153.7
USD	JPY	spot	153.81

Node.js / TypeScript client

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

npm install boj-exchange-rate

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

const pair = await getRate('USD', 'JPY', { 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.

Full reference — installation, all four functions, response shapes, error codes: boj-exchange-rate documentation.

Why use the official Bank of Japan rate?

When an auditor or tax office in Japan asks which rate you used, "the JPY mid-market rate at 14:32" is not an answer — the official rate published by Bank of Japan for that date is. This API returns exactly those published figures, stamped with the bank's own rate_date; on weekends and holidays the most recent published table is returned, as compliance rules expect.

If a pair isn't in the bank's published table, the API computes it from that table (inverse or cross via JPY) and marks it "derived": true — published and computed values are never silently mixed.

Endpoints

• GET /api/v1/central-bank/boj/latest — latest table or single pair (all plans)
• GET /api/v1/central-bank/boj/{YYYY-MM-DD} — the table for any date (paid plans)
• GET /api/v1/central-bank/boj/history — time series, up to 5,000 rows (paid plans)
• GET /api/v1/central-bank/boj/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 published table locally makes a small quota go far.

Frequently asked questions

Is there an API for Bank of Japan exchange rates?

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

How often does Bank of Japan update its rates?

New tables land once per business day — the API picks each one up shortly after Bank of Japan publishes it (latest: 2026-09-08).

Is this the official published table?

Yes — the rows are Bank of Japan's published figures, untouched, with the original publication date attached. Pairs the bank didn't print are computed and 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 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 Bank of KoreaSouth Korea — official KRW rates National Bank of RomaniaRomania — official RON rates National Bank of UkraineUkraine — official UAH rates Banco de MéxicoMexico — official MXN rates Bangko Sentral ng PilipinasPhilippines — official PHP rates Banco Central de la República DominicanaDominican Republic — official DOP rates Banco Central del ParaguayParaguay — official PYG rates National Bank of CambodiaCambodia — official KHR rates Bank of GhanaGhana — official GHS rates Central Bank of EgyptEgypt — official EGP rates Bank of AlbaniaAlbania — official ALL rates Banco de GuatemalaGuatemala — official GTQ rates Bank of MongoliaMongolia — official MNT rates Monetary Authority of SingaporeSingapore — official SGD rates Banca d'ItaliaItaly — official EUR rates Danmarks NationalbankDenmark — official DKK rates Superintendencia Financiera de Colombia (TRM)Colombia — official COP rates National Bank of KazakhstanKazakhstan — official KZT rates National Bank of GeorgiaGeorgia — official GEL rates Central Bank of UzbekistanUzbekistan — official UZS rates Magyar Nemzeti BankHungary — official HUF rates Central Bank of IcelandIceland — official ISK rates Central Bank of the UAEUnited Arab Emirates — official AED rates State Bank of PakistanPakistan — official PKR rates Nepal Rastra BankNepal — official NPR rates Central Bank of JordanJordan — official JOD rates Bangladesh BankBangladesh — official BDT rates Central Bank of OmanOman — official OMR rates Palestine Monetary AuthorityPalestine — official ILS rates Central Bank of MyanmarMyanmar — official MMK rates Central Bank of the Republic of China (Taiwan)Taiwan — official TWD rates Bank of ThailandThailand — official THB rates Monetary Authority of MacaoMacao — official MOP rates State Bank of VietnamVietnam — official VND rates Bank of the Lao PDRLaos — official LAK rates Central Bank of VenezuelaVenezuela — official VES rates Central Bank of ChileChile — official CLP rates Central Bank of UruguayUruguay — official UYU rates Banco Central de BoliviaBolivia — official BOB rates Central Bank of SurinameSuriname — official SRD rates Bank of GuyanaGuyana — official GYD rates Saudi Central Bank (SAMA)Saudi Arabia — official SAR rates Bank Al-MaghribMorocco — official MAD rates National Bank of SerbiaSerbia — official RSD rates National Bank of the Republic of BelarusBelarus — official BYN rates Qatar Central BankQatar — official QAR rates Central Bank of IraqIraq — official IQD rates Bank of AlgeriaAlgeria — official DZD rates Banco Central de Costa RicaCosta Rica — official CRC rates Central Bank of West African States (BCEAO)West Africa (WAEMU) — official XOF rates National Bank of EthiopiaEthiopia — official ETB rates Central Bank of KenyaKenya — official KES rates National Bank of MoldovaMoldova — official MDL rates National Bank of North MacedoniaNorth Macedonia — official MKD rates Central Bank of ArmeniaArmenia — official AMD rates Bank of Central African States (BEAC)Central Africa (CEMAC) — official XAF rates Central Bank of TunisiaTunisia — official TND rates National Bank of RwandaRwanda — official RWF rates National Bank of AngolaAngola — official AOA rates Bank of TanzaniaTanzania — official TZS rates Bank of UgandaUganda — official UGX rates Bank of JamaicaJamaica — official JMD rates Banco Central de NicaraguaNicaragua — official NIO rates Banco Central de HondurasHonduras — official HNL rates Central Bank of Trinidad and TobagoTrinidad and Tobago — official TTD rates Bank of MauritiusMauritius — official MUR rates Banco de MoçambiqueMozambique — official MZN rates Bank of BotswanaBotswana — official BWP rates Bank of ZambiaZambia — official ZMW rates Reserve Bank of MalawiMalawi — official MWK rates National Bank of the Kyrgyz RepublicKyrgyzstan — official KGS rates Bank of LithuaniaLithuania — official EUR rates Banque Centrale du CongoDR Congo — official CDF rates Central Bank of BarbadosBarbados — official BBD rates Central Bank of LibyaLibya — official LYD rates Central Bank of The GambiaGambia — official GMD rates Banque de la République d'HaïtiHaiti — official HTG rates Royal Monetary Authority of BhutanBhutan — official BTN rates National Bank of TajikistanTajikistan — official TJS rates Central Bank of BelizeBelize — official BZD rates Reserve Bank of FijiFiji — official FJD rates Maldives Monetary AuthorityMaldives — official MVR rates Banque Centrale de MauritanieMauritania — official MRU rates Reserve Bank of ZimbabweZimbabwe — official ZWG rates Bank of NamibiaNamibia — official NAD rates Tax authority rates APIHMRC and US Treasury official rates Exchange Rate APIReal-time and official rates for every source, one REST API