21 STD to SAR

21 STD = 0.0035 SAR at the rate on 2025-09-11.

1 STD = ﷼0.0002 ^{-﷼0.0000000049 (-0.0029%)} at the rate on 2025-09-11.

The cost of 21 Sao Tomean Dobras in Saudi Riyals today is ﷼0.0035 according to the “Open Exchange Rates”, compared to yesterday, the exchange rate decreased by -0.0029% (by -﷼0.0000000049). The exchange rate of the Sao Tomean Dobra in relation to the Saudi Riyal on the chart, the table of the dynamics of the cost as a percentage for the day, week, month and year.

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Sao Tomean Dobra

STD

Sao Tome And Principe

Saudi Riyal

SAR

Saudi Arabia

With the currency converter, you can convert 21 Sao Tomean Dobras to Riyals and find out how much twenty-one dobras is currently worth in Riyals. Also, you can make a reverse calculation and find out the current value of 21 Riyals in Sao Tomean Dobras.

19 STD to SAR	20 STD to SAR	21 STD to SAR	22 STD to SAR	23 STD to SAR
﷼0.0032	﷼0.0034	﷼0.0035	﷼0.0037	﷼0.0039

19 STD to SAR

20 STD to SAR

21 STD to SAR

22 STD to SAR

23 STD to SAR

﷼0.0032

﷼0.0034

﷼0.0035

﷼0.0037

﷼0.0039

Graph of change in 21 Sao Tomean Dobras to Saudi Riyals rate

Select the period for plotting the chart:

The Sao Tomean Dobra to Riyal exchange rate on the chart allows you to track changes over different periods and draw conclusions about possible forecasts of the exchange rate of one currency in relation to another.

Dynamics of the cost changes of 21 Dobras (STD) in Riyals (SAR)

Changes for the week (7 days)
Date	Day of the week	21 STD to SAR	Changes	Changes %
September 5, 2025	Friday	21 STD = 0.0035 SAR	+0.00000037 SAR	+0.01%
September 6, 2025	Saturday	21 STD = 0.0035 SAR	-0.000002 SAR	-0.06%
September 7, 2025	Sunday	21 STD = 0.0035 SAR	-0.000002 SAR	-0.04%
September 8, 2025	Monday	21 STD = 0.0035 SAR	+0.000003 SAR	+0.08%
September 9, 2025	Tuesday	21 STD = 0.0035 SAR	+0.00000024 SAR	+0.01%
September 10, 2025	Wednesday	21 STD = 0.0035 SAR	-0.00000004 SAR	-0.0011%
September 11, 2025 (today)	Thursday	21 STD = 0.0035 SAR	-0.00000010 SAR	-0.0029%
The cost of 21 Dobras (STD) in Saudi Riyals for a week (7 days) decreased by -﷼0.000001 (zero riyal one halalah).

Changes for the month (30 days)
Date	Day of the week	21 STD to SAR	Changes	Changes %
August 12, 2025	Tuesday	21 STD = 0.0035 SAR	-0.00000036 SAR	-0.01%
September 11, 2025 (today)	Thursday	21 STD = 0.0035 SAR	-0.000001 SAR	-0.03%
The cost of 21 Dobras (STD) in Saudi Riyals for a month (30 days) decreased by -﷼0.000001 (zero riyal one halalah).

Changes for the year (365 days)
Date	Day of the week	21 STD to SAR	Changes	Changes %
September 11, 2024	Wednesday	21 STD = 0.0035 SAR	+0.000001 SAR	+0.02%
September 11, 2025 (today)	Thursday	21 STD = 0.0035 SAR	-0.000001 SAR	-0.03%
The cost of 21 Dobras (STD) in Saudi Riyals for a year (365 days) decreased by -﷼0.000001 (zero riyal one halalah).

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Graph of change in 21 Sao Tomean Dobras to Saudi Riyals rate

Dynamics of the cost changes of 21 Dobras (STD) in Riyals (SAR)

Cross rate of 21 STD to other currencies