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Convert 100 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?

100 old São Tomé dobras =

1 YER +0.67% today

1 STD = 0.0108359 YER · 1 YER = 92.2856 STD

Mid-market rate, updated 10:04 UTC. Paid plans update as often as every 60 seconds. Get STD→YER rates via API

STD to YER over the last year

0.010750.0110.011250.0115Nov ’25Jan ’26Mar ’26May ’26Jul ’26Sep ’26
52-week high
0.011547
52-week low
0.010729
52-week average
0.011202
Change over the year
−5.02%

Conversion tables

STD to YER
STD YER
1 STD 0.01084 YER
10 STD 0.1084 YER
100 STD 1 YER
1,000 STD 11 YER
10,000 STD 108 YER
50,000 STD 542 YER
100,000 STD 1,084 YER
YER to STD
YER STD
1 YER 92.29 STD
10 YER 922.86 STD
100 YER 9,228.56 STD
1,000 YER 92,285.64 STD
10,000 YER 922,856.41 STD
50,000 YER 4,614,282.07 STD
100,000 YER 9,228,564.13 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 100 STD in YER?

100 old São Tomé dobras is 1 Yemeni rials at the mid-market rate of 4 October 2026, 10:04 UTC, when 1 STD = 0.0108359 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.