---
title: "National Bank of Oman Exchange Rate API: OMR Buy and Sell Rates as JSON"
description: "National Bank of Oman's counter board rates for 27 currencies against the Omani rial, read hourly from the bank's own page and served as JSON with the Central Bank of Oman official rate alongside. REST, JavaScript and Python examples."
canonical: https://allratestoday.com/blog/national-bank-of-oman-exchange-rate-api/
source: AllRatesToday (https://allratestoday.com/) — Markdown mirror of the page above; index of all pages at https://allratestoday.com/llms.txt
generated: 2026-11-15T19:14:00.944Z
---

National Bank of Oman is one of Oman’s oldest banks, founded in 1973 and headquartered in Muscat. Its currency converter page lists buying and selling rates in rials for about 27 currencies, with the date the table was last updated. This guide shows how to read that board as JSON: what the rates mean, how they compare with the Central Bank of Oman official rate and with other banks in Oman, and the calls that return them.

## What the NBO board shows

- **27 currencies against the Omani rial**: AED, AUD, BDT, BHD, CAD, CHF, CNY, DKK, EGP, EUR, GBP, HKD, INR, JOD, JPY, KWD, LKR, NOK, NZD, PHP, PKR, QAR, SAR, SEK, SGD, THB and USD. Every value is OMR per 1 unit of the foreign currency.
- **The counter board pair.** The rial is pegged at 0.3845 per US dollar, so bank USD quotes sit within a fraction of a percent of the peg. Rial rates are quoted to five or six decimals per unit of foreign currency, and the wider spreads are on the remittance currencies such as INR, PKR, BDT and PHP. The Central Bank of Oman official rate is shown next to each row.
- **USD on 15 November 2026**: NBO bought at 0.3815 and sold at 0.388 OMR, a spread of 1.69%. The Central Bank of Oman official rate was 0.385, so the bank's mid sat -0.07% from it.
- **The bank's own timestamp.** The page prints a last-updated stamp (`Tuesday, November 10, 2026 8:23:10 AM` on the board above), returned as `bank_updated_at` next to our `captured_at`.
- **Every day's board is kept permanently, from 10 November 2026.** Read one past day with `?date=`, or a range for one currency with the `/history` endpoint (paid plans).

## Spreads across the board

On the 15 November 2026 board the tightest spreads were CHF (1.17%), SAR (1.27%), AED (1.33%) and the widest LKR (34.48%), EGP (16.67%), BDT (7.89%). Spread is (sell − buy) ÷ mid: what a round trip through the bank costs, before any fees. The API returns it on every row as `spread_pct`, so you can rank currencies or alert when a bank widens its board.

## USD at NBO and other banks in Oman

USD on the 4 boards AllRatesToday reads in Oman, all captured on 15 November 2026 (the Central Bank of Oman official rate was 0.385):

| Bank | Buy | Sell | Spread | Mid vs official |
| --- | --- | --- | --- | --- |
| Bank Muscat | 0.382 | 0.388 | 1.55% | 0.00% |
| **National Bank of Oman** | 0.3815 | 0.388 | 1.69% | -0.07% |
| Oman Arab Bank | 0.382 | 0.388 | 1.56% | 0.00% |
| First Abu Dhabi Bank Oman | 0.383 | 0.3865 | 0.91% | -0.07% |

NBO had the 4th narrowest USD spread of the 4. One call to `/api/v1/bank-rates/om` returns every board in the table at once.

## Get the board (REST)

You need an API key; the [free key](https://allratestoday.com/register/) works. The full board:

```
curl "https://allratestoday.com/api/v1/bank-rates/om/nbo" \
  -H "Authorization: Bearer art_live_your_key"
```

What comes back (the 15 November 2026 board, first three rows):

```
{
  "bank": "nbo",
  "name": "National Bank of Oman",
  "country": "om",
  "quote_ccy": "OMR",
  "bank_updated_at": "Tuesday, November 10, 2026 8:23:10 AM",
  "basis": "Counter board",
  "captured_at": "2026-11-15T11:45:57.377Z",
  "rates": [
    {"ccy":"AED","buy":0.1043,"sell":0.1057,"mid":0.105,"spread_pct":1.333,"official":0.1048218,"vs_official_pct":0.17},
    {"ccy":"AUD","buy":0.2629,"sell":0.2701,"mid":0.2665,"spread_pct":2.702,"official":0.2608375,"vs_official_pct":2.171},
    {"ccy":"BDT","buy":0.00292,"sell":0.00316,"mid":0.00304,"spread_pct":7.895,"official":0.0030849,"vs_official_pct":-1.455},
    … 24 more currencies
  ],
  "disclaimer": "…",
  "attribution": { … }
}
```

One currency, with the row fields at the top level:

```
curl "https://allratestoday.com/api/v1/bank-rates/om/nbo?ccy=USD" \
  -H "Authorization: Bearer art_live_your_key"
```

```
{
  "bank": "nbo",
  "name": "National Bank of Oman",
  "country": "om",
  "quote_ccy": "OMR",
  "bank_updated_at": "Tuesday, November 10, 2026 8:23:10 AM",
  "basis": "Counter board",
  "captured_at": "2026-11-15T11:45:57.377Z",
  "ccy": "USD",
  "buy": 0.3815,
  "sell": 0.388,
  "mid": 0.38475,
  "spread_pct": 1.689,
  "official": 0.385,
  "vs_official_pct": -0.065,
  "disclaimer": "Retail buy/sell rates as displayed on each bank’s own website at capture time, quoted as home currency per 1 unit of foreign currency. Indicative only: banks change these through the day, apply them at the counter or in-app, and they are not official or reference rates. For the rate a regulation names, use the central-bank endpoints.",
  "attribution": {
    "source": "Board rates published by National Bank of Oman on its own website, collected by AllRatesToday",
    "bank_url": "https://www.nbo.om/en/Pages/Tools/Currency-Converter.aspx",
    "url": "https://allratestoday.com/bank-exchange-rate-api/om/nbo/",
    "terms": "Public pages that show the rates need a visible link to allratestoday.com"
  }
}
```

The board as it stood on a past day:

```
curl "https://allratestoday.com/api/v1/bank-rates/om/nbo?date=2026-11-10" \
  -H "Authorization: Bearer art_live_your_key"
```

One currency over a date range, one row per day (paid plans; add `&format=csv`, `xml` or `xlsx` for a file):

```
curl "https://allratestoday.com/api/v1/bank-rates/om/nbo/history?ccy=USD&from=2026-11-10&to=2026-11-15" \
  -H "Authorization: Bearer art_live_your_key"
```

## JavaScript

```
npm install @allratestoday/sdk
```

```
import { AllRatesToday } from '@allratestoday/sdk';

const client = new AllRatesToday({ apiKey: 'art_live_your_key' });

// National Bank of Oman's USD row
const r = await client.bankRates('om', { bank: 'nbo', ccy: 'USD' });
console.log(`NBO buys USD at ${r.buy}, sells at ${r.sell} OMR`);

// The board as it stood on a past day
const past = await client.bankRates('om', { bank: 'nbo', date: '2026-11-10' });
console.log(past.snapshot_date, past.rates.length);
```

## Python

```
import requests

r = requests.get(
    "https://allratestoday.com/api/v1/bank-rates/om/nbo",
    headers={"Authorization": "Bearer art_live_your_key"},
    timeout=10,
)
r.raise_for_status()
for row in r.json()["rates"]:
    print(row["ccy"], row["buy"], row["sell"], row["spread_pct"])
```

## Board rate or official rate?

The Central Bank of Oman rate is the one tax, accounting and customs rules in Oman name; nobody transacts at it. NBO's board is the price a customer actually gets. The API puts both on every row: `official` is the central bank's rate for the same currency and `vs_official_pct` is how far the bank's mid sits from it. Use the board to show customers a real price, compare banks for a remittance, or keep a dated record of what the bank quoted; use the [Central Bank of Oman endpoint](https://allratestoday.com/central-bank-rates-api/cbo/) when a rule asks for the official rate.

## FAQ

### Where do the National Bank of Oman rates come from?

From the bank's own public rates page (https://www.nbo.om/en/Pages/Tools/Currency-Converter.aspx), read hourly. AllRatesToday does not change the numbers: each row is the buy and sell price NBO shows, with the mid, the spread and the Central Bank of Oman rate added.

### Are these the official OMR exchange rates?

No. They are NBO's retail prices for customers. The official rate in Oman is the Central Bank of Oman rate, which the API returns as `official` on each row where the central bank has one, and in full from the central-bank endpoint.

### How often is the NBO board updated?

AllRatesToday reads the page every hour. The bank's own last-updated stamp is returned as `bank_updated_at`, so you can tell a fresh read of an unchanged board from a new board.

### Can I get NBO rates for a past date?

Yes, from 10 November 2026 onward; every day's board is kept permanently. Add `?date=YYYY-MM-DD` for one day: the response is the board captured that day, or the nearest earlier day within five days, with `date_requested` and `snapshot_date` added. For a range, `/history?ccy=USD&from=…&to=…` returns one row per day as JSON, CSV, XML or XLSX on paid plans.

### Do I need an API key?

Yes. Commercial bank boards need an API key; any plan works, the free key included, and each call counts against the plan. Public pages or widgets that show the rates need a visible link to allratestoday.com.

## National Bank of Oman rates, as JSON

Free API key, hourly board captures, the official rate alongside.

 [Get your free API key](https://allratestoday.com/register/)

## Related

- [National Bank of Oman live board rates](https://allratestoday.com/bank-exchange-rate-api/om/nbo/)
- [All banks in Oman side by side](https://allratestoday.com/bank-exchange-rate-api/om/)
- [Central Bank of Oman official rates API](https://allratestoday.com/central-bank-rates-api/cbo/)
- [Bank Muscat exchange rate API guide](https://allratestoday.com/blog/bank-muscat-exchange-rate-api/)
- [Oman Arab Bank exchange rate API guide](https://allratestoday.com/blog/oman-arab-bank-exchange-rate-api/)
- [First Abu Dhabi Bank Oman exchange rate API guide](https://allratestoday.com/blog/first-abu-dhabi-bank-oman-exchange-rate-api/)
- [Every bank exchange rate API guide, by country](https://allratestoday.com/blog/bank-exchange-rate-api-guides/)
- [Commercial bank rates API: every bank and country](https://allratestoday.com/bank-exchange-rate-api/)