The gold rate is calculated based on the spot price of gold, which is set by market forces such as supply and demand. The spot price reflects the current value of gold, and is constantly changing. To calculate the gold rate, the spot price is multiplied by a certain weight (e.g. 1 gram or 10 grams). This gives the gold rate for that weight of gold. The spot price of gold can also be converted into other currencies, so the gold rate can be easily compared across different countries. The spot price of gold is determined by international currencies, and is typically updated every few minutes. Therefore, the gold rate also fluctuates regularly.
In addition to the spot price of gold, other factors can affect the overall gold rate. These include the cost of production and transportation, as well as taxes and other fees. Governments can also influence the gold rate through their own policies, such as introducing taxes or setting exchange rates. So, the overall gold rate is affected by a combination of factors.