> For the complete documentation index, see [llms.txt](https://docs.delos.financial/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.delos.financial/currency/convert.md).

# Convert

Converts an amount from one currency to another using current exchange rates. Returns both the original and converted amounts.

**Endpoint**

`POST/v2/currency`

**Link**

{% embed url="<https://stagep.tst-apidmndelss.com/openapi/v2.html#/operations/Currency_Convert>" %}

### **Request**

#### **Headers**

| Key             | Value              | Required |
| --------------- | ------------------ | -------- |
| `Authorization` | `Bearer <JWT>`     | Yes      |
| `Content-Type`  | `application/json` | Yes      |
| `Accept`        | `application/json` | Yes      |

#### **Request Body (JSON)**

| Field               | Type     | Description                                            | Required | Example |
| ------------------- | -------- | ------------------------------------------------------ | -------- | ------- |
| **`amount`**        | `object` | **Source amount** to convert (see Money Object below). | Yes      | -       |
| **`toCurrencyIso`** | `string` | **Target currency** (ISO 4217 code).                   | Yes      | `"EUR"` |

**Money Object**

| Field              | Type      | Description                           | Example               |
| ------------------ | --------- | ------------------------------------- | --------------------- |
| **`currencyCode`** | `string`  | **Source currency** (ISO 4217 code).  | `"USD"`               |
| **`units`**        | `string`  | **Whole units** (e.g., dollars).      | `"100"`               |
| **`nanos`**        | `integer` | **Fractional units** (nanos = 10^-9). | `500000000` (= $0.50) |

**Example Request Body:**

json

```
{
  "amount": {
    "currencyCode": "USD",
    "units": "100",
    "nanos": 500000000
  },
  "toCurrencyIso": "EUR"
}
```

***

### **Response (200 OK)**

Returns both the original and converted amounts.

#### **Response Fields**

| Field                 | Type     | Description                          | Example |
| --------------------- | -------- | ------------------------------------ | ------- |
| **`sourceAmount`**    | `object` | Original amount (matches request).   | -       |
| **`convertedAmount`** | `object` | Converted amount (see Money Object). | -       |

**Money Object (for both amounts)**

| Field              | Type      | Description       | Example               |
| ------------------ | --------- | ----------------- | --------------------- |
| **`currencyCode`** | `string`  | Currency code.    | `"EUR"`               |
| **`units`**        | `string`  | Whole units.      | `"93"`                |
| **`nanos`**        | `integer` | Fractional units. | `250000000` (= €0.25) |

**Example Response:**

json

```
{
  "sourceAmount": {
    "currencyCode": "USD",
    "units": "100",
    "nanos": 500000000
  },
  "convertedAmount": {
    "currencyCode": "EUR",
    "units": "93",
    "nanos": 250000000
  }
}
```

\*Translation: $100.50 USD = €93.25 EUR\*

***

### **Examples**

#### **Request**

bash

```
curl -X POST 'https://stagep.tst-apidmndelss.com/v2/currency' \
  -H 'Authorization: Bearer eyJhbGci...wNLGA' \
  -H 'Content-Type: application/json' \
  -d '{
    "amount": {
      "currencyCode": "USD",
      "units": "50",
      "nanos": 0
    },
    "toCurrencyIso": "JPY"
  }'
```

#### **Response**

json

```
{
  "sourceAmount": {
    "currencyCode": "USD",
    "units": "50",
    "nanos": 0
  },
  "convertedAmount": {
    "currencyCode": "JPY",
    "units": "5500",
    "nanos": 0
  }
}
```

***

### **Error Cases**

1. **Invalid Currency**:

   json

   ```
   { "error": "Unsupported currency code: XYZ" }
   ```
2. **Missing Parameters**:

   json

   ```
   { "error": "amount and toCurrencyIso are required" }
   ```
3. **Rate Unavailable**:

   json

   ```
   { "error": "Exchange rate not available for USD to BTC" }
   ```

***

### **Notes**

* **Rate Source**: Uses real-time exchange rates (updated frequently).
* **Precision**: Conversion maintains high precision (nanos = 10^-9).
* **Fees**: Conversion may include applicable fees (check system configuration).

Real request example

```postman_json
  {
  "amount": {
    "currencyCode": "EUR",
    "units": "10",
    "nanos": 0
  },
  "currencyCodeTo": "USD"
}
{
  "amount": {
    "currencyCode": "EUR",
    "units": "10",
    "nanos": 0
  },
  "currencyCodeTo": "USD"
}
```

Real response example

200 OK

```postman_json
{
  "sourceAmount": {
    "currencyCode": "EUR",
    "units": "10",
    "nanos": 0
  },
  "convertedAmount": {
    "currencyCode": "USD",
    "units": "11",
    "nanos": 606401205
  }
}
```


---

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