Convert 1 Old São Tomé Dobra (STD) to Yemeni Rial (YER)

Convert old São Tomé dobras to Yemeni rials at the live mid-market rate. Reverse: YER to STD

The Old São Tomé Dobra is no longer in use

Old São Tomé Dobra (STD) was replaced by the São Tomé and Príncipe Dobra (STN) in 2018. For today’s money, convert STN to YER.

Yemeni Rial (YER) is not the Saudi Riyal (SAR). Looking for STD to SAR?

Amount

From

1 Old São Tomé Dobra =

0.01083 YER +0.61% today

1 STD = 0.0108295 YER · 1 YER = 92.3401 STD

Mid-market rate, updated 15:58 UTC. Paid plans update as often as every 60 seconds. Get STD→YER rates via API

STD to YER over the last year

52-week high: 0.011547
52-week low: 0.010729
52-week average: 0.011202
Change over the year: −5.07%

Conversion tables

STD to YER
STD	YER
1 STD	0.01083 YER
10 STD	0.1083 YER
100 STD	1 YER
1,000 STD	11 YER
10,000 STD	108 YER
50,000 STD	541 YER
100,000 STD	1,083 YER

YER to STD
YER	STD
1 YER	92.34 STD
10 YER	923.40 STD
100 YER	9,234.01 STD
1,000 YER	92,340.11 STD
10,000 YER	923,401.12 STD
50,000 YER	4,617,005.62 STD
100,000 YER	9,234,011.24 STD

Get STD→YER rates via API

The live rate, the rate on any past day or a whole range, for YER and 170+ other currencies, as JSON. Free plan included. See the exchange rate API.

Get a free API key API documentation

curl https://api.currencyapi.com/v3/latest \
  -G -d base_currency=STD -d currencies=YER \
  -H "apikey: YOUR-API-KEY"

# the rate on a past day
curl https://api.currencyapi.com/v3/historical \
  -G -d base_currency=STD -d currencies=YER \
  -d date=2025-10-04 \
  -H "apikey: YOUR-API-KEY"

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Questions about STD to YER

How much is 1 STD in YER?

1 Old São Tomé Dobra is 0.01083 Yemeni rials at the mid-market rate of 4 October 2026, 15:58 UTC, when 1 STD = 0.0108295 YER.

What was the STD to YER rate over the last year?

Over the last 52 weeks 1 STD ranged from 0.0107293 to 0.0115469 YER, 0.0112023 YER on average.

Which exchange rate is this?

The mid-market rate: the midpoint between what currency markets pay and ask for STD/YER, without the margin a bank or card issuer adds, so the rate you are charged is usually a little worse.