Convert 100 Yemeni Rial (YER) to Old São Tomé Dobra (STD)

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

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 YER to STN.

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

Amount

From

100 Yemeni rials =

9,228.56 STD −0.67% today

1 YER = 92.2856 STD · 1 STD = 0.0108359 YER

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

YER to STD over the last year

52-week high: 93.203
52-week low: 86.603
52-week average: 89.282
Change over the year: +5.28%

Conversion tables

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

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

Get YER→STD rates via API

The live rate, the rate on any past day or a whole range, for STD 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=YER -d currencies=STD \
  -H "apikey: YOUR-API-KEY"

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

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Questions about YER to STD

How much is 100 YER in STD?

100 Yemeni rials is 9,228.56 old São Tomé dobras at the mid-market rate of 4 October 2026, 10:04 UTC, when 1 YER = 92.2856 STD.

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

Over the last 52 weeks 1 YER ranged from 86.6032 to 93.2026 STD, 89.282 STD on average.

Which exchange rate is this?

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