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Arbitrum (ARB) to Old São Tomé Dobra (STD)

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

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 ARB to STN.

1 Arbitrum =

4,375.37 STD −1.29% today

1 ARB = 4,375.37 STD · 1 STD = 0.00022855 ARB

Mid-market rate, updated 14:01 UTC. Paid plans update as often as every 60 seconds. Get ARB→STD rates via API

ARB to STD over the last year

2,500.005,000.007,500.0010,000.00Nov ’25Jan ’26Mar ’26May ’26Jul ’26Sep ’26
52-week high
9,631.78
52-week low
1,553.38
52-week average
3,277.24
Change over the year
−51.91%

Conversion tables

ARB to STD
ARB STD
1 ARB 4,375.37 STD
10 ARB 43,753.70 STD
100 ARB 437,536.99 STD
1,000 ARB 4,375,369.85 STD
10,000 ARB 43,753,698.52 STD
50,000 ARB 218,768,492.61 STD
100,000 ARB 437,536,985.23 STD
STD to ARB
STD ARB
1 STD 0.0002286 ARB
10 STD 0.002286 ARB
100 STD 0.02286 ARB
1,000 STD 0.2286 ARB
10,000 STD 2.28552100 ARB
50,000 STD 11.42760500 ARB
100,000 STD 22.85521000 ARB

Get ARB→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=ARB -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=ARB -d currencies=STD \
  -d date=2025-10-04 \
  -H "apikey: YOUR-API-KEY"

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Questions about ARB to STD

How much is 1 ARB in STD?

1 Arbitrum is 4,375.37 old São Tomé dobras at the mid-market rate of 4 October 2026, 14:01 UTC, and 1 STD is 0.00022855 ARB.

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

Over the last 52 weeks 1 ARB ranged from 1,553.38 to 9,631.78 STD, 3,277.24 STD on average.

Which exchange rate is this?

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