Convert Iranian Rials (IRR) and Sao Tome Dobras (STD): Currency Exchange Rate Conversion Calculator

This Iranian Rial and Sao Tome Dobra convertor is up to date with exchange rates from October 25, 2026.

Enter the amount to be converted in the box to the left of Iranian Rial. Use "Swap currencies" to make Sao Tome Dobra the default currency. Click on Sao Tome Dobras or Iranian Rials to convert between that currency and all other currencies.

The Iranian Rial is the currency in Iran (Islamic Republic of Iran, IR, IRN). The Sao Tome Dobra is the currency in Sao Tome and Principe (ST, STP). The symbol for IRR can be written Rls. The symbol for STD can be written Db. The Iranian Rial is divided into 10 rials to a toman. The Sao Tome Dobra is divided into 100 centimos. The exchange rate for the Iranian Rial was last updated on October 25, 2026 from MSN. The exchange rate for the Sao Tome Dobra was last updated on May 3, 2023 from Yahoo Finance. The IRR conversion factor has 2 significant digits. The STD conversion factor has 5 significant digits.

IRR	STD
coinmill.com
1,000,000	11,589.0
2,000,000	23,177.5
5,000,000	57,944.0
10,000,000	115,888.5
20,000,000	231,776.5
50,000,000	579,441.5
100,000,000	1,158,883.0
200,000,000	2,317,765.5
500,000,000	5,794,414.0
1,000,000,000	11,588,828.5
2,000,000,000	23,177,656.5
5,000,000,000	57,944,142.0
10,000,000,000	115,888,283.5
20,000,000,000	231,776,567.5
50,000,000,000	579,441,418.5
100,000,000,000	1,158,882,837.0
200,000,000,000	2,317,765,674.0

IRR rate
October 25, 2026

STD	IRR
coinmill.com
20,000.0	1,725,800
50,000.0	4,314,500
100,000.0	8,629,000
200,000.0	17,258,000
500,000.0	43,145,000
1,000,000.0	86,290,000
2,000,000.0	172,580,000
5,000,000.0	431,450,000
10,000,000.0	862,900,000
20,000,000.0	1,725,800,000
50,000,000.0	4,314,500,000
100,000,000.0	8,629,000,000
200,000,000.0	17,258,000,000
500,000,000.0	43,145,000,000
1,000,000,000.0	86,290,000,000
2,000,000,000.0	172,580,000,000
5,000,000,000.0	431,450,000,000

STD rate
May 3, 2023

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Iranian Rial (IRR) and Sao Tome Dobra (STD) Currency Exchange Rate Conversion Calculator

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