1. Currency converter
  2. STD to GNF

Old São Tomé Dobra (STD) to Guinean Franc (GNF)

Convert old São Tomé dobras to Guinean francs at the live mid-market rate. Reverse: GNF 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 GNF.

1 Old São Tomé Dobra =

0.4055 GNF +0.67% today

1 STD = 0.405487 GNF · 1 GNF = 2.46617 STD

Mid-market rate, updated 09:11 UTC. Paid plans update as often as every 60 seconds. Get STD→GNF rates via API

STD to GNF over the last year

0.400.410.42Nov ’25Jan ’26Mar ’26May ’26Jul ’26Sep ’26
52-week high
0.42623
52-week low
0.40150
52-week average
0.41296
Change over the year
−2.33%

Conversion tables

STD to GNF
STD GNF
1 STD 0.4055 GNF
10 STD 4 GNF
100 STD 41 GNF
1,000 STD 405 GNF
10,000 STD 4,055 GNF
50,000 STD 20,274 GNF
100,000 STD 40,549 GNF
GNF to STD
GNF STD
1 GNF 2.47 STD
10 GNF 24.66 STD
100 GNF 246.62 STD
1,000 GNF 2,466.17 STD
10,000 GNF 24,661.68 STD
50,000 GNF 123,308.39 STD
100,000 GNF 246,616.79 STD

Get STD→GNF rates via API

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

Related conversions

Popular Old São Tomé Dobra conversions

Popular Guinean Franc conversions

Questions about STD to GNF

How much is 1 STD in GNF?

1 Old São Tomé Dobra is 0.405487 Guinean francs at the mid-market rate of 4 October 2026, 09:11 UTC, and 1 GNF is 2.46617 STD.

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

Over the last 52 weeks 1 STD ranged from 0.401498 to 0.426228 GNF, 0.412963 GNF on average.

Which exchange rate is this?

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