Docs/APIs/Currency Converter

Currency Converter

Convert Currency Rates

OperationalCredits 2 per callp50 369msFinanceStar

Overview

A currency exchange rate API with live FX rates for 170+ currencies, plus a past date's closing rate on paid plans. Currency Converter works by analyzing the amount and currency provided and converting the currency rate. It uses advanced algorithms to convert the currency rate based on the amount and currency and returns the converted currency rate. Each response names both currencies. Paid plans also get the pair's 24-hour change, high and low, its 1-day, 7-day, 30-day and 1-year percent change, and its 30-day high, low, average and volatility; history=true returns the last 30 daily closing rates and hourly=true the rate for each of the last 24 hours.

Live Test Currency Converter API →

Endpoint

One host, one path per API. The block below shows this call in four languages; every one of them is the same HTTP request. Making requests covers the timeouts, retries and parameter rules that apply to all of them. The SDKs wrap the same call in a typed client.

GEThttps://api.apiverve.com/v1/currencyconverter
curl "https://api.apiverve.com/v1/currencyconverter?value=1&from=USD&to=EUR&date=2025-06-02&history=true&hourly=true" \
  -H "x-api-key: your_api_key_here"

Replace your_api_key_here with the key from your dashboard. When the inputs arrive as a list rather than one at a time, batch requests run up to 200 of them through this same API in a single call.

Authentication

Send your key in the x-api-key header. That is the only auth step — there is no token exchange and no per-endpoint scope to configure. Authentication covers creating, rotating and revoking keys.

401 is the only auth verdict

A 401 means the key is missing, invalid or expired. A 403 means the key is valid but not permitted here — blocked by a key restriction or an IP allow-list. Running out of credits is a 429.

Parameters

Sent in the query string. Premium parameters are accepted on every plan but only take effect on plans that include them.

ParameterTypeDescription
valueRequirednumberThe amount to convert
range 0–∞
fromRequiredstringThe ISO 4217 currency code to convert from
toRequiredstringThe ISO 4217 currency code to convert to
dateOptionalPremiumstringOptional past date (YYYY-MM-DD) to use that day's closing rates instead of live rates. History runs from 1999-01-04 for about 30 major currencies and covers every supported currency from March 2024. A day with no rates, such as a weekend or holiday, uses the last close before it.
historyOptionalPremiumbooleanInclude the pair's daily closing rate for the last 30 days
hourlyOptionalPremiumbooleanInclude the pair's rate for each of the last 24 hours (live rates only, not with date)

Response

Every API returns the same three top-level keys, so one response handler covers your whole integration: status, error and data. Only data changes shape. Response format covers the envelope, the other output formats and how premium fields are withheld.

Sample response
{
  "status": "ok",
  "error": null,
  "data": {
    "from": "USD",
    "to": "EUR",
    "value": 100,
    "convertedValue": 89.5099,
    "rate": 0.895099,
    "change24h": 0.003587,
    "change24hPct": 0.4024,
    "changeDirection": "up",
    "high24h": 0.895323,
    "low24h": 0.8911,
    "date": "2026-10-27",
    "lastUpdated": "2026-10-27T17:41:09.810Z",
    "fromName": "US Dollar",
    "toName": "Euro",
    "change1d": 0.4467,
    "change7d": 0.5739,
    "change30d": 1.9699,
    "change1y": 4.1682,
    "high30d": 0.895099,
    "low30d": 0.878037,
    "average30d": 0.889911,
    "volatility30d": 0.2427,
    "history": [
      {
        "date": "2026-09-28",
        "rate": 0.878037
      },
      {
        "date": "2026-09-29",
        "rate": 0.880226
      },
      {
        "date": "2026-09-30",
        "rate": 0.882434
      },
      {
        "date": "2026-10-01",
        "rate": 0.883652
      },
      {
        "date": "2026-10-02",
        "rate": 0.888626
      },
      {
        "date": "2026-10-03",
        "rate": 0.888626
      },
      {
        "date": "2026-10-04",
        "rate": 0.888246
      },
      {
        "date": "2026-10-05",
        "rate": 0.894174
      },
      {
        "date": "2026-10-06",
        "rate": 0.891674
      },
      {
        "date": "2026-10-07",
        "rate": 0.890419
      },
      {
        "date": "2026-10-08",
        "rate": 0.892463
      },
      {
        "date": "2026-10-09",
        "rate": 0.889796
      },
      {
        "date": "2026-10-10",
        "rate": 0.892716
      },
      {
        "date": "2026-10-11",
        "rate": 0.892571
      },
      {
        "date": "2026-10-12",
        "rate": 0.892822
      },
      {
        "date": "2026-10-13",
        "rate": 0.894845
      },
      {
        "date": "2026-10-14",
        "rate": 0.891987
      },
      {
        "date": "2026-10-15",
        "rate": 0.890861
      },
      {
        "date": "2026-10-16",
        "rate": 0.88987
      },
      {
        "date": "2026-10-17",
        "rate": 0.889757
      },
      {
        "date": "2026-10-18",
        "rate": 0.889761
      },
      {
        "date": "2026-10-19",
        "rate": 0.890515
      },
      {
        "date": "2026-10-20",
        "rate": 0.889991
      },
      {
        "date": "2026-10-21",
        "rate": 0.890629
      },
      {
        "date": "2026-10-22",
        "rate": 0.889437
      },
      {
        "date": "2026-10-23",
        "rate": 0.891773
      },
      {
        "date": "2026-10-24",
        "rate": 0.892532
      },
      {
        "date": "2026-10-25",
        "rate": 0.892668
      },
      {
        "date": "2026-10-26",
        "rate": 0.891118
      },
      {
        "date": "2026-10-27",
        "rate": 0.895099
      }
    ],
    "hourly": [
      {
        "hour": 18,
        "rate": 0.891512,
        "timestamp": "2026-10-26T18:41:09.810Z"
      },
      {
        "hour": 19,
        "rate": 0.891173,
        "timestamp": "2026-10-26T19:41:09.810Z"
      },
      {
        "hour": 20,
        "rate": 0.8911,
        "timestamp": "2026-10-26T20:41:09.810Z"
      },
      {
        "hour": 21,
        "rate": 0.891849,
        "timestamp": "2026-10-26T21:41:09.810Z"
      },
      {
        "hour": 22,
        "rate": 0.89212,
        "timestamp": "2026-10-26T22:41:09.810Z"
      },
      {
        "hour": 23,
        "rate": 0.891692,
        "timestamp": "2026-10-26T23:41:09.810Z"
      },
      {
        "hour": 0,
        "rate": 0.891922,
        "timestamp": "2026-10-27T00:41:09.810Z"
      },
      {
        "hour": 1,
        "rate": 0.892681,
        "timestamp": "2026-10-27T01:41:09.810Z"
      },
      {
        "hour": 2,
        "rate": 0.892646,
        "timestamp": "2026-10-27T02:41:09.810Z"
      },
      {
        "hour": 3,
        "rate": 0.892287,
        "timestamp": "2026-10-27T03:41:09.810Z"
      },
      {
        "hour": 4,
        "rate": 0.892805,
        "timestamp": "2026-10-27T04:41:09.810Z"
      },
      {
        "hour": 5,
        "rate": 0.893422,
        "timestamp": "2026-10-27T05:41:09.810Z"
      },
      {
        "hour": 6,
        "rate": 0.893135,
        "timestamp": "2026-10-27T06:41:09.810Z"
      },
      {
        "hour": 7,
        "rate": 0.892984,
        "timestamp": "2026-10-27T07:41:09.810Z"
      },
      {
        "hour": 8,
        "rate": 0.8937,
        "timestamp": "2026-10-27T08:41:09.810Z"
      },
      {
        "hour": 9,
        "rate": 0.894058,
        "timestamp": "2026-10-27T09:41:09.810Z"
      },
      {
        "hour": 10,
        "rate": 0.89364,
        "timestamp": "2026-10-27T10:41:09.810Z"
      },
      {
        "hour": 11,
        "rate": 0.893781,
        "timestamp": "2026-10-27T11:41:09.810Z"
      },
      {
        "hour": 12,
        "rate": 0.894553,
        "timestamp": "2026-10-27T12:41:09.810Z"
      },
      {
        "hour": 13,
        "rate": 0.894604,
        "timestamp": "2026-10-27T13:41:09.810Z"
      },
      {
        "hour": 14,
        "rate": 0.894209,
        "timestamp": "2026-10-27T14:41:09.810Z"
      },
      {
        "hour": 15,
        "rate": 0.894651,
        "timestamp": "2026-10-27T15:41:09.810Z"
      },
      {
        "hour": 16,
        "rate": 0.895323,
        "timestamp": "2026-10-27T16:41:09.810Z"
      },
      {
        "hour": 17,
        "rate": 0.895099,
        "timestamp": "2026-10-27T17:41:09.810Z"
      }
    ]
  }
}

Response fields

Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.

FieldTypeExampleDescription
fromstring"USD"Source currency code (e.g., USD, EUR)
tostring"EUR"Target currency code (e.g., USD, EUR)
valuenumber100Original amount to convert
convertedValuenumber89.5099Converted amount in target currency
ratenumber0.895099Current exchange rate for the currency pair
change24hPremiumnumber0.003587Rate change vs 24 hours ago
change24hPctPremiumnumber0.4024Percentage rate change vs 24 hours ago
changeDirectionstring"up"Direction of 24h change: up, down, or unchanged
high24hPremiumnumber0.895323Highest rate in the past 24 hours
low24hPremiumnumber0.8911Lowest rate in the past 24 hours
datestring"2026-10-27"UTC date (YYYY-MM-DD) of the rates used: the live rates' date, or the day served for a date request
lastUpdatedstring"2026-10-27T17:41:09.810Z"ISO 8601 timestamp of when the exchange rates were last refreshed
fromNamestring"US Dollar"English name of the source currency; null when none is known
toNamestring"Euro"English name of the target currency; null when none is known
change1dPremiumnumber0.4467Percent change in the pair's rate since the previous day's close; null until a close from then is stored
change7dPremiumnumber0.5739Percent change in the pair's rate over the last 7 days; null until a close from then is stored
change30dPremiumnumber1.9699Percent change in the pair's rate over the last 30 days; null until a close from then is stored
change1yPremiumnumber4.1682Percent change in the pair's rate over the last year; null when no close from then is stored
high30dPremiumnumber0.895099Highest daily closing rate for the pair over the last 30 days; null until two days are stored
low30dPremiumnumber0.878037Lowest daily closing rate for the pair over the last 30 days; null until two days are stored
average30dPremiumnumber0.889911Mean daily closing rate for the pair over the last 30 days; null until two days are stored
volatility30dPremiumnumber0.2427Standard deviation of the daily percent changes over the last 30 days (not annualized); null until two days are stored
historyPremiumarray[30]The pair's daily closing rate for the last 30 days, oldest first (when history=true)
datePremiumstring"2026-09-28"UTC date of the close (YYYY-MM-DD)
ratePremiumnumber0.878037Closing rate from the source to the target currency
hourlyPremiumarray[24]The pair's rate for each of the last 24 hours, oldest first (when hourly=true)
hourPremiumnumber18UTC hour of day (0-23) the rate was recorded in
ratePremiumnumber0.891512Rate from the source to the target currency at that hour
timestampPremiumstring"2026-10-26T18:41:09.810Z"ISO 8601 time the rate was recorded

Errors

Read the HTTP status first, then error for the specific reason. The body names the parameter that has to change. Error handling covers the full status list and which of them are worth retrying.

StatusMeaningWhat to do
400Input was rejectedRead error; it names the parameter.
401Key missing or invalidCheck the header name and the key value.
403Key valid, but not permittedA key restriction or IP allow-list; see key scoping.
429Rate limited, or out of creditsRead error to tell them apart; see rate limits.

Supported Currencies

170+ world currencies supported including fiat currencies, cryptocurrencies, and precious metals.

CodeCurrencyRegion
AEDUAE DirhamUnited Arab Emirates
AFNAfghan AfghaniAfghanistan
ALLAlbanian LekAlbania
AMDArmenian DramArmenia
ANGNetherlands Antillean GuilderCuraçao
AOAAngolan KwanzaAngola
ARSArgentine PesoArgentina
AUDAustralian DollarAustralia
AWGAruban FlorinAruba
AZNAzerbaijani ManatAzerbaijan
BAMBosnia-Herzegovina Convertible MarkBosnia and Herzegovina
BBDBarbadian DollarBarbados

Use cases

Multi-Currency Storefront Checkout
E-commerce platforms convert catalog prices to shoppers' local currencies and display current exchange rates at checkout before processing payment.
Cross-Border Expense Reporting
When employees submit foreign travel receipts, accounting software converts reimbursable expenses into company base currency using the exact exchange rate.
International Invoice Generation
Generate export invoices in foreign buyer currencies by calculating converted subtotals and showing whether the exchange rate moved up or down.
Travel Card Expense Tracking
To prevent surprise foreign transaction charges, mobile banking apps calculate local currency balances on the fly using real-time conversion rates.

Other ways to use Currency Converter

Set up Currency Converter on APIVerve, or reach the same source a different way. Your APIVerve account and credits work on all of them — one key, one balance.

Give it to an AI agentConnect over MCP and your agent calls it as a native tool — Claude, Cursor, ChatGPT.VerveKit →Reference →
Google Sheets or ExcelA =VERVE() formula fills a column — no script, no export, recalculates in place.VerveSheets →Reference →
Ground an agent on itA cited, machine-checkable fact your model can't produce on its own.VerveContext →Reference →

Pages that use this API:

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