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Old São Tomé Dobra (STD) to Gold Ounce (XAU)

Convert old São Tomé dobras to Gold Ounces at the live mid-market rate. Reverse: XAU 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 XAU.

1 Old São Tomé Dobra =

0.00000001 XAU +0.91% today

1 STD = 0.00000001 XAU · 1 XAU = 90,242,981.44 STD

Mid-market rate, updated 03:41 UTC. Paid plans update as often as every 60 seconds. Get STD→XAU rates via API

STD to XAU over the last year

0.000000010.00000001Nov ’25Jan ’26Mar ’26May ’26Jul ’26Sep ’26
52-week high
0.00000001
52-week low
0.00000001
52-week average
0.00000001
Change over the year
−9.76%

Conversion tables

STD to XAU
STD XAU
1 STD 0.00000001 XAU
10 STD 0.00000011 XAU
100 STD 0.00000111 XAU
1,000 STD 0.0000111 XAU
10,000 STD 0.000111 XAU
50,000 STD 0.000555 XAU
100,000 STD 0.00111 XAU
XAU to STD
XAU STD
1 XAU 90,242,981.44 STD
10 XAU 902,429,814.39 STD
100 XAU 9,024,298,143.86 STD
1,000 XAU 90,242,981,438.56 STD
10,000 XAU 902,429,814,385.56 STD
50,000 XAU 4,512,149,071,927.80 STD
100,000 XAU 9,024,298,143,855.59 STD

Get STD→XAU rates via API

The live rate, the rate on any past day or a whole range, for XAU 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=XAU \
  -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=XAU \
  -d date=2025-10-04 \
  -H "apikey: YOUR-API-KEY"

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Questions about STD to XAU

How much is 1 STD in XAU?

1 Old São Tomé Dobra is 0.00000001 Gold Ounces at the mid-market rate of 4 October 2026, 03:41 UTC, and 1 XAU is 90,242,981.44 STD.

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

Over the last 52 weeks 1 STD ranged from 0.00000001 to 0.00000001 XAU, 0.00000001 XAU on average.

Which exchange rate is this?

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