Convertitore Basi Numeriche
Conversione Base Numerica
Domande Frequenti
Tutto quello che devi sapere sulla conversione tra basi numeriche
Cosa sono le basi numeriche?
Le basi numeriche sono sistemi di numerazione che usano un certo numero di cifre. La base 10 (decimale) usa le cifre 0-9 ed e quella usata quotidianamente. La base 2 (binario) usa solo 0 e 1 ed e il linguaggio dei computer. La base 8 (ottale) usa 0-7, e la base 16 (esadecimale) usa 0-9 e A-F per i colori web, indirizzi di memoria e programmazione.
Come funziona la conversione tra basi?
Per convertire un numero da una base all'altra, si passa generalmente per la base 10. Ad esempio, il binario 1010 equivale a 1x8 + 0x4 + 1x2 + 0x1 = 10 in decimale, che in esadecimale diventa A. Ogni cifra rappresenta una potenza della base: in binario le potenze di 2, in ottale di 8, in esadecimale di 16.
Perche l'esadecimale e importante nella programmazione?
L'esadecimale e fondamentale in informatica perche ogni cifra esadecimale corrisponde esattamente a 4 bit binari, rendendo la conversione immediata. Viene usato per i colori CSS (#FF5733), indirizzi di memoria (0x7FFF), valori RGB, codifiche di caratteri (UTF-8) e debug di dati binari. E molto piu compatto del binario: FF e piu leggibile di 11111111.
Which bases does the converter handle?
Decimal, binary with base two, octal with base eight and hexadecimal with base sixteen. Entering a number in any of them fills in the other three at once, so you can read the same value four ways.
Why is hexadecimal used so much in computing?
Because one hexadecimal digit stands for exactly four binary digits, so a byte fits into two characters. It is shorter than binary to write and maps onto it without arithmetic, which is why colours and memory addresses use it.
Which characters are valid in each base?
Binary takes only 0 and 1, octal 0 to 7, decimal 0 to 9 and hexadecimal 0 to 9 plus the letters A to F. A character outside the range for that base makes the number invalid rather than being ignored.
Does my data stay private?
Yes, and not because we promise it: this tool runs entirely inside your browser. What you type or upload never leaves your device, so it never reaches a server of ours and there is nothing we could keep, read or lose. You can check it yourself: open the page, disconnect from the internet, and the tool keeps working.
Do you store what I enter?
No. There is no database behind this tool: we do not store your files, your text or your results. When you close the tab nothing is left — not here with us, because it never arrived, and not anywhere else.
Do you profile me? Are you GDPR compliant?
We do not profile you: there is no account to create, we never ask for your email to use a tool, and we keep no profile of what you do. We are an Italian company and we work under the GDPR and the other European rules, with the privacy notice and the consent request in plain sight. One thing we say in full rather than hiding it behind a slogan: the ads on the page are Google's, and Google may use cookies to personalise them. You decide from the consent banner: if you say no the ads stay, but they are not personalised, and the tool works exactly the same.
If it is free, how do you make money?
From the ads on the page, and that is all. We do not sell your data, there is no hidden paid plan, there is no limit that eventually asks for your card, and you do not have to sign up. The ads pay for the servers and for the time we spend writing the tools: that is how we can keep them open to everyone.