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 September 22, 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 September 21, 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	15,355.0
2,000,000	30,710.5
5,000,000	76,776.0
10,000,000	153,552.0
20,000,000	307,104.0
50,000,000	767,760.0
100,000,000	1,535,520.0
200,000,000	3,071,039.5
500,000,000	7,677,599.0
1,000,000,000	15,355,197.5
2,000,000,000	30,710,395.0
5,000,000,000	76,775,988.0
10,000,000,000	153,551,976.0
20,000,000,000	307,103,952.0
50,000,000,000	767,759,879.5
100,000,000,000	1,535,519,759.0
200,000,000,000	3,071,039,518.0

IRR rate
September 21, 2026

STD	IRR
coinmill.com
20,000.0	1,302,490
50,000.0	3,256,225
100,000.0	6,512,455
200,000.0	13,024,905
500,000.0	32,562,265
1,000,000.0	65,124,530
2,000,000.0	130,249,055
5,000,000.0	325,622,640
10,000,000.0	651,245,285
20,000,000.0	1,302,490,565
50,000,000.0	3,256,226,415
100,000,000.0	6,512,452,830
200,000,000.0	13,024,905,660
500,000,000.0	32,562,264,150
1,000,000,000.0	65,124,528,300
2,000,000,000.0	130,249,056,605
5,000,000,000.0	325,622,641,510

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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