21 STD to ETB

21 STD = 0.14 ETB at the rate on 2025-09-11.

1 STD = 0.01 ETB ^{-0.000001 ETB (-0.02%)} at the rate on 2025-09-11.

The cost of 21 Sao Tomean Dobras in Ethiopian Birr today is 0.14 ETB according to the “Open Exchange Rates”, compared to yesterday, the exchange rate decreased by -0.02% (by -0.000001 ETB). The exchange rate of the Sao Tomean Dobra in relation to the Ethiopian Birr on the chart, the table of the dynamics of the cost as a percentage for the day, week, month and year.

Currency Converter

Sao Tomean Dobra

STD

Sao Tome And Principe

Ethiopian Birr

ETB

Ethiopia

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

19 STD to ETB	20 STD to ETB	21 STD to ETB	22 STD to ETB	23 STD to ETB
0.12 ETB	0.13 ETB	0.14 ETB	0.14 ETB	0.15 ETB

19 STD to ETB

20 STD to ETB

21 STD to ETB

22 STD to ETB

23 STD to ETB

0.12 ETB

0.13 ETB

0.14 ETB

0.14 ETB

0.15 ETB

Graph of change in 21 Sao Tomean Dobras to Ethiopian Birr rate

Select the period for plotting the chart:

The Sao Tomean Dobra to Birr 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 Birr (ETB)

Changes for the week (7 days)
Date	Day of the week	21 STD to ETB	Changes	Changes %
September 5, 2025	Friday	21 STD = 0.13 ETB	-0.0005 ETB	-0.37%
September 6, 2025	Saturday	21 STD = 0.13 ETB	+0.0001 ETB	+0.08%
September 7, 2025	Sunday	21 STD = 0.13 ETB	-0.000023 ETB	-0.02%
September 8, 2025	Monday	21 STD = 0.13 ETB	-0.0004 ETB	-0.28%
September 9, 2025	Tuesday	21 STD = 0.14 ETB	+0.0010 ETB	+0.74%
September 10, 2025	Wednesday	21 STD = 0.14 ETB	+0.0002 ETB	+0.17%
September 11, 2025 (today)	Thursday	21 STD = 0.14 ETB	-0.000021 ETB	-0.02%
The cost of 21 Dobras (STD) in Ethiopian Birr for a week (7 days) increased by +0.0009 ETB (zero birr nine santim).

Changes for the month (30 days)
Date	Day of the week	21 STD to ETB	Changes	Changes %
August 12, 2025	Tuesday	21 STD = 0.13 ETB	+0.0005 ETB	+0.37%
September 11, 2025 (today)	Thursday	21 STD = 0.14 ETB	+0.0033 ETB	+2.45%
The cost of 21 Dobras (STD) in Ethiopian Birr for a month (30 days) increased by +0.0033 ETB (zero birr thirty-three santim).

Changes for the year (365 days)
Date	Day of the week	21 STD to ETB	Changes	Changes %
September 11, 2024	Wednesday	21 STD = 0.11 ETB	-0.0005 ETB	-0.46%
September 11, 2025 (today)	Thursday	21 STD = 0.14 ETB	+0.03 ETB	+20.70%
The cost of 21 Dobras (STD) in Ethiopian Birr for a year (365 days) increased by +0.03 ETB (zero birr three santim).

Currency Converter

Graph of change in 21 Sao Tomean Dobras to Ethiopian Birr rate

Dynamics of the cost changes of 21 Dobras (STD) in Birr (ETB)

Cross rate of 21 STD to other currencies