• Megapixel Calculator
    Convert any pixel resolution to megapixels. Enter width and height in pixels to get total pixels, megapixels (MP), and the aspect ratio instantly.
  • Decimal to Octal Converter
    Convert any decimal (base 10) number to octal (base 8) instantly. Uses repeated division by 8, collecting remainders. Free online converter with steps.
  • Octal to Decimal Converter
    Convert any octal (base 8) number to decimal (base 10) instantly. Free online octal to decimal converter with the formula and a worked example.
  • Decimal to Binary Converter
    Convert any decimal (base 10) number to binary (base 2) instantly using the repeated division-by-2 method. Shows the binary digits and bit count.
  • LLM Tokens to Words Calculator
    Convert between LLM tokens and words instantly. Estimate how many words a token count holds (or vice versa) using the ~0.75 words-per-token rule.
  • RGB to CMYK Color Converter
    Convert RGB color values (0-255) to CMYK percentages instantly. Free online RGB to CMYK converter for print, design, and graphics work.
  • Hex to RGB Color Converter
    Convert any hex color code (#RRGGBB or #RGB) to its RGB values instantly. See the red, green and blue channels plus a live color swatch.
  • Milliseconds to HH:MM:SS Calculator
    Convert milliseconds to hours, minutes, seconds and HH:MM:SS format instantly. Free online milliseconds to time calculator with a full breakdown.
  • Word and Character Counter
    Free word and character counter: count words, unique words, characters with/without spaces, space count, and a word-density table with optional stop-word removal.
  • PPI Pixel Density Calculator
    Calculate display PPI (pixels per inch), dot pitch, screen size, total pixels and aspect ratio from resolution and diagonal size in inches, cm or mm.
  • Random PIN Generator
    Generate a random numeric PIN of any length from 1 to 100 digits. Choose whether to allow repeated digits. Ideal for ATM, banking and login security codes.
  • Random Password Generator
    Generate a strong random password up to 50 characters from lowercase, uppercase, digits, punctuation and symbols. Pick character sets and length. Nothing is stored.
  • Numbers to Words Converter
    Convert numbers to words in English. Spell any number, format as currency (dollars, euros, pounds and more), or write check amounts, with selectable letter case.
  • Digits to Words Converter
    Convert digits to spoken words character by character (123 to "one two three"). Read tracking numbers, dates, SSNs and serials in 12 languages with case options.
  • Computer (Digital) Storage Units Converter
    Convert digital storage between bits and bytes, decimal (kB, MB, GB) and binary (KiB, MiB, GiB) units. Free, accurate converter with the IEC standard explained.
  • Screen Ratio Calculator
    Calculate a screen's width and height in inches from its diagonal size and aspect ratio (16:9, 4:3, 21:9). Free instant screen dimension calculator.
  • Pixel Aspect Ratio Calculator
    Calculate Pixel Aspect Ratio (PAR) from stored pixel dimensions and display aspect ratio. PAR = DAR ÷ SAR, where SAR = stored width ÷ height.
  • Portrait Aspect Ratio Calculator
    Calculate the portrait (vertical) height from a given width and aspect ratio. Free tool for photos, video, social media and print layouts.
  • Odd Parity Bit Calculator
    Calculate the odd parity bit for any binary string. Determines the parity bit so the total number of 1s (data + parity) is odd, for error detection.
  • Parity Bit Calculator
    Calculate the even and odd parity bit for any binary data. Counts the 1 bits and shows the parity bit needed for error detection.
  • CSS Aspect Ratio Calculator
    Calculate the simplified aspect ratio from any width and height, plus the padding-top percentage for responsive CSS aspect-ratio boxes.
  • Even Parity Bit Calculator
    Calculate the even parity bit for any binary string. Counts the 1s and returns the parity bit that makes the total number of 1s even.
  • RAID Capacity Calculator
    Calculate usable RAID storage capacity for RAID 0, 1, 5, 6 and 10. Enter disk count and size to see usable space, overhead and efficiency.
  • Uptime / Downtime Calculator
    Calculate allowed downtime for any SLA uptime percentage (99.9%, 99.99%, etc.) per day, week, month, or year — in days, hours, minutes & seconds.