⌘K

Computer & IT

Number base, hash, storage, bandwidth and network calculators

11 tools available

Encoding

1 tool

Base64 Encoder

Encode and decode text to and from Base64

Networking

4 tools

CIDR Calculator

Expand any CIDR block into full network details

IPv4 Subnet Calculator

Calculate network, broadcast and usable host ranges

Bandwidth Calculator

Find the bandwidth needed to transfer data in time

Download Time Calculator

Estimate how long file downloads take at your speed

Numeral Systems

3 tools

Binary Converter

Convert between binary, decimal, hex and octal

Hex Converter

Convert hex numbers to decimal, binary and octal

Octal Converter

Convert octal numbers to decimal, binary and hex

Security

2 tools

CRC32 Checksum

Compute CRC-32 checksums for data verification

Hash Generator

Generate MD5, SHA-1 and SHA-256 hashes instantly

Storage

1 tool

Storage Converter

Convert between bytes, KB, MB, GB and TB

About Computer & IT

Work with number bases, hashes, storage sizes, bandwidth and networking math — convert binary, hex and octal, compute transfer times, CIDR ranges and checksums.

Built for students and IT professionals, every calculator is precise, free and runs entirely in your browser.

Explore other free tools

PDF Tools Image Tools Convert Utility Tools Resume & Documents Unit Converters Date & Time Typing Tests Calculators