Tech Calculators

Binary, Decimal, Hex Converter

Convert whole numbers between binary, octal, decimal and hexadecimal exactly, or use the 64-bit programmer keypad for bitwise math and two's complement.

Bandwidth Calculator

Calculate bandwidth needs for video streaming, downloads, or office connectivity. Convert between Mbps, MB/s, and GB per hour.

Password Strength Checker

Estimate password entropy and crack time. Built for educational illustration; do not enter real passwords here.

File Size Estimator (Video/Image)

Estimate file size for video and image files based on resolution, bitrate, duration, or compression quality.

Base64 String Length Calculator

Estimate Base64-encoded string length from raw byte count. Useful for sizing API payloads and storage estimates.

IP Subnet Calculator

Calculate network address, broadcast address, host range, and number of usable hosts for any IPv4 CIDR block.

Data Storage Converter

Convert between bytes, kilobytes, megabytes, gigabytes, and terabytes — using both decimal (1000) and binary (1024) bases.

Color Hex / RGB Converter

Convert between hex color codes (#FF5733) and RGB triplets (255, 87, 51). Includes HSL representation and color preview.

Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates. Supports seconds and milliseconds.