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Cardano (ADA) to Old São Tomé Dobra (STD)

Convert Cardanos to old São Tomé dobras at the live mid-market rate. Reverse: STD to ADA

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 ADA to STN.

1 Cardano =

5,397.99 STD +0.61% today

1 ADA = 5,397.99 STD · 1 STD = 0.00018525 ADA

Mid-market rate, updated 23:58 UTC. Paid plans update as often as every 60 seconds. Get ADA→STD rates via API

ADA to STD over the last year

5,000.0010,000.0015,000.00Nov ’25Jan ’26Mar ’26May ’26Jul ’26Sep ’26
52-week high
18,383.74
52-week low
3,129.54
52-week average
6,674.27
Change over the year
−69.77%

Conversion tables

ADA to STD
ADA STD
1 ADA 5,397.99 STD
10 ADA 53,979.86 STD
100 ADA 539,798.61 STD
1,000 ADA 5,397,986.11 STD
10,000 ADA 53,979,861.09 STD
50,000 ADA 269,899,305.43 STD
100,000 ADA 539,798,610.86 STD
STD to ADA
STD ADA
1 STD 0.0001853 ADA
10 STD 0.001853 ADA
100 STD 0.01853 ADA
1,000 STD 0.1853 ADA
10,000 STD 1.852543 ADA
50,000 STD 9.262715 ADA
100,000 STD 18.525430 ADA

Get ADA→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=ADA -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=ADA -d currencies=STD \
  -d date=2025-10-01 \
  -H "apikey: YOUR-API-KEY"

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Questions about ADA to STD

How much is 1 ADA in STD?

1 Cardano is 5,397.99 old São Tomé dobras at the mid-market rate of 1 October 2026, 23:58 UTC, and 1 STD is 0.00018525 ADA.

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

Over the last 52 weeks 1 ADA ranged from 3,129.54 to 18,383.74 STD, 6,674.27 STD on average.

Which exchange rate is this?

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