Number Base Converter
Convert between decimal (base 10), binary (base 2), octal (base 8), and hexadecimal (base 16). All four representations shown simultaneously.
Frequently Asked Questions
What units does the Number Base Converter support?
The Number Base Converter supports multiple units with instant conversion. Convert between decimal (base 10), binary (base 2), octal (base 8), and hexadecimal (base 16). All four representations shown simultaneously. All results use SI-validated constants accurate to 8 significant figures.
Is this Number Base Converter free?
Yes — completely free. No registration, no limits. Works on all devices including mobile.
How accurate is this converter?
Accurate to 8 significant figures using precise mathematical constants validated against international SI standards (NIST and ISO 80000).