🇸🇹 São Tomé and Príncipe to 🇮🇳 IndiaHalf yes, half no. Classic.
Some of your plugs fit India's sockets directly. Grounded or chunkier ones need help.
What to pack
Plugbert recommends
Type D (Indian 3-pin) adapter
Some plugs from São Tomé and Príncipe fit the Type C, D and M sockets in India and some don't, so pack an adapter. A Type D (Indian 3-pin) adapter fits 1 of the 3 listed socket families there. Socket variants can differ; check the actual outlet and adapter rating.
Tip: a "universal" travel adapter may be useful for several destinations. Check its wall-side plugs, grounding and power limits against your trip.
Voltage & frequency
🇸🇹 Home
230 V
50 Hz
🇮🇳 There
230 V
50 Hz
Identical voltage
No voltage converter needed. Both countries use 230 V.
The plugs
Plugbert's note on India
Type D and the larger Type M have different pin sizes. Check the actual outlet; a universal label does not establish fit or grounding.