• TV Screen Size Calculator
    Calculate a TV or monitor's actual width, height and screen area from its diagonal size and aspect ratio (e.g. 16:9). Free, instant, accurate.
  • Binary to Hexadecimal Converter
    Convert any binary (base 2) number to hexadecimal (base 16) instantly. Groups bits into nibbles, maps each to a hex digit, shows decimal too.
  • Decimal to Hexadecimal Converter
    Convert any decimal (base 10) number to hexadecimal (base 16) instantly. See the hex value and the 0x-prefixed form, with the conversion method explained.
  • Hex to Binary Converter
    Convert hexadecimal (base 16) to binary (base 2) instantly. Each hex digit maps to a 4-bit nibble, plus the decimal value and digit count.
  • Download Time Calculator
    Estimate how long a file takes to download from its size and your internet bandwidth, with an optional protocol overhead factor. Free and instant.
  • PX to EM Converter
    Convert pixels (px) to EM units for CSS. Enter a pixel value and base font size to get the exact em equivalent instantly.
  • EM to PX Converter
    Convert EM to pixels instantly. Enter an em value and your base font size (default 16px) to get the exact pixel equivalent for CSS.
  • Hex to Decimal Converter
    Convert hexadecimal (base 16) to decimal (base 10) instantly. Enter a hex value like 1A3F and get its exact decimal equivalent with the formula explained.
  • Two's Complement Calculator
    Convert any decimal number to its two's complement binary form for 4, 8, 16, or 32 bits. See the stored pattern, signed value, and negation instantly.
  • RGB to Hex Color Converter
    Convert RGB color values (0-255) to a hex color code instantly. Enter red, green and blue to get the #RRGGBB hex string with a live color preview.
  • Hex to RGB Color Converter
    Convert any hex color code (#RRGGBB or #RGB) to RGB values instantly. Free, accurate hex-to-RGB converter with a live color swatch preview.
  • Video Download Time Calculator
    Estimate how long a video or file takes to download from its size and your connection speed. Supports MB, GB, TB, Mbps, Gbps and MB/s.
  • TV Viewing Distance Calculator
    Find the ideal TV viewing distance for your screen size. Enter your TV's diagonal and resolution (1080p or 4K) to get the recommended seating distance.
  • Game Download Time Calculator
    Estimate how long a game download will take from its size in GB and your internet speed in Mbps. Get the answer in hours, minutes, and seconds.
  • Megapixel Calculator
    Convert any image resolution (width × height in pixels) to megapixels instantly. Get total pixel count and aspect ratio with this free MP calculator.
  • Video Length from File Size Calculator
    Estimate how long a video runs from its file size and total bitrate. Enter MB/GB and Mbps/kbps to get duration in hours, minutes, and seconds.
  • Video Call Bandwidth Calculator
    Estimate the internet bandwidth a Zoom or Teams video call needs. Enter quality and participants to get total Mbps and data usage per hour.
  • Video Upload Time Calculator
    Estimate how long it takes to upload a video or any file. Enter file size and your upload speed to get the time in hours, minutes and seconds.
  • FPS Converter Calculator
    Convert frame counts and durations between frame rates. Enter frames, source fps and target fps to get the converted frame count and clip duration.
  • Data Cap Overage Calculator
    Find out if you'll exceed your data cap and estimate overage charges. Enter data used, your cap, and price per GB to see extra costs instantly.
  • Mbps to Gbps Converter
    Convert Mbps to Gbps instantly. Enter your internet speed in megabits per second and get the equivalent in gigabits per second (Gbps = Mbps / 1000).
  • Internet Speed Requirement Calculator
    Find out how many Mbps your home internet needs. Add up streaming, gaming, video calls and browsing across all devices with a headroom factor.
  • Kbps to Mbps Converter
    Convert Kbps (kilobits per second) to Mbps (megabits per second) instantly. Just divide by 1000. Free, fast online data-rate converter.
  • LLM VRAM Requirement Calculator
    Estimate the GPU VRAM (GB) needed to run or serve a large language model from its parameter count, precision, and overhead factor.