Free-market rate feed
Currency and gold prices come from market-data providers that collect free-market prices. Most items have a second source that takes over if the first stops updating.
Every rate ties back to a named source, a stated refresh interval, and a public rule for how gaps and sponsorships are marked.
Three sources feed every price you see here. None of them are blended into a single hidden number.
Currency and gold prices come from market-data providers that collect free-market prices. Most items have a second source that takes over if the first stops updating.
Official rates are published by the Central Bank and shown here without adjustment.
Crypto prices are pulled from the exchanges listed in each asset’s comparison table, such as Nobitex, Wallex, Ramzinex and Bitpin. The price shown is the lowest buy price among them.
The same currency or coin can carry more than one price at once. Each one answers a different question.
The rate traded openly between currency and gold dealers day to day. This is the number most exchanges and news outlets quote, and the one used across this site by default.
The rate the Central Bank of Iran publishes for a short list of currencies. It is shown as published and is often not a rate the public can trade at.
For gold coins, the gap between a coin’s price and the value of the gold it contains, driven by demand for the coin itself, not the metal.
Rates for moving money in or out of Iran through personal, company, or PayPal-linked channels. These differ from the cash free-market rate because they carry transfer risk and route restrictions.
When a source goes quiet or turns unreliable, the chart says so.
If a feed stops responding, the affected period is shaded on the chart automatically. Periods our team knows to be unreliable, such as a national outage or a source sending stale data, are marked the same way as incident bands. They are never filled in with an interpolated number, and never shown as if it were a normal, quiet market.
Marked gap, not a smoothed lineTwo kinds of mark, always separate.
An exchange can pay to appear first in a comparison table. When it does, it carries a “Sponsored” badge, visible at all times.
The exchange with the best price always gets its own “Best price to buy” or “Best price to sell” badge, wherever it sits in the table, even when that is a different row than the sponsored one.
Advertising never appears above the price ticker, on any page.A new value is stored only when the price actually changed, so the time shown next to a price is the source’s own time, not the time of our last check. A price that has not been checked for a while is marked with a warning.
A change percentage is shown only when that source was observed for the whole period. If data was missing during the period you see a dash rather than a figure that could mislead.
The buy price is what a buyer pays; the sell price is what a seller receives. The “best price” marks are computed from the prices alone, and only among fresh prices quoted in toman. An exchange can pay for the top position in a table; that row is always labeled “Sponsored”, and the “best price” mark is never taken from another row.
The “Tether on exchanges vs. the free-market dollar” page places two market prices side by side, each with its own time. It is a data report, not a forecast and not advice to buy or sell.
Prices are for information and may differ from the price you actually trade at with an exchange or a shop. If you spot an error, tell us through the contact page.
Rates move fast and sources occasionally lag. If a number looks wrong, tell us.
Add NerkhBaha to your home screen for instant prices and alert notifications.
On iPhone, notifications work only after the app is added to the home screen.