Industry-Specific

  • DPI Calculator
    Calculate DPI (dots per inch) for printing from your image's pixel dimension and the intended print size in inches. Free print resolution tool.
  • 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 used in CSS and web design.
  • Hex to Decimal Converter
    Convert any hexadecimal (base 16) number to decimal (base 10) instantly. Enter a hex value like 1A3F and get the exact decimal result with the formula.
  • Hex Color to RGB Converter
    Convert any hex color code (e.g. #3498DB) to its RGB values instantly. Supports 3- and 6-digit hex codes with a live color swatch preview.
  • Network & Broadcast Address Calculator
    Free IPv4 network and broadcast address calculator. Enter an IP and CIDR prefix to get the network, broadcast, subnet mask, host range and address count.
  • IP Subnet Mask Calculator
    Free IPv4 subnet calculator. Enter an IP and CIDR prefix to get the subnet mask, network & broadcast address, usable host count, and full host range.
  • CIDR to Subnet Mask Calculator
    Convert any CIDR prefix length (/0 to /32) into its dotted-decimal subnet mask, wildcard mask, total addresses, and usable host count instantly.
  • IP Address to Binary Calculator
    Convert any IPv4 address to binary, a 32-bit decimal integer, and hexadecimal. Enter four octets (0-255) for instant dotted-binary output.
  • Data Storage Conversion Calculator
    Convert between bytes, KB, MB, GB, TB and PB using binary (1024) or decimal (1000) systems. Fast, accurate data storage unit converter.
  • dBm to Watts Calculator
    Convert dBm to watts and milliwatts instantly. Enter a power level in dBm to get the equivalent power in W using P = 10^((dBm−30)/10).
  • Hosts per Subnet Calculator
    Calculate the maximum usable hosts per IPv4 subnet from the prefix length using 2^(32−prefix) − 2. Instant CIDR host count for any /n.
  • VoIP Bandwidth Calculator
    Calculate VoIP bandwidth per call and total for concurrent calls. Factors in codec bitrate, packetization interval and IP/UDP/RTP header overhead.
  • Free Space Path Loss Calculator
    Calculate Free Space Path Loss (FSPL) in dB from distance (km) and frequency (MHz). Uses the standard 32.44 constant RF link-budget formula.
  • Speedometer Error Calculator
    Calculate true vs indicated speed after changing tire size. Find how much your speedometer is off when you fit larger or smaller diameter tires.
  • Gas vs Electric Car Savings Calculator
    Compare annual fuel costs of a gas car vs an electric car. Enter mileage, gas price, MPG, electricity price and miles/kWh to see your yearly savings.
  • VLSM Calculator
    Free VLSM calculator: enter a base network and host requirements to get optimal subnets, prefix lengths, usable ranges, and broadcast addresses.
  • 2-Stroke Fuel Oil Mix Calculator
    Calculate the exact 2-stroke oil to add to your gas for any ratio (50:1, 40:1, 32:1). Enter fuel volume in liters or gallons to get mL and fl oz.
  • Trip Fuel Cost Calculator
    Estimate the fuel cost of any road trip. Enter distance, MPG and fuel price to get total gas cost and gallons needed instantly.
  • Tire Diameter from Tire Size Calculator
    Calculate overall tire diameter from a tire size (e.g. 225/45R17). Enter section width, aspect ratio and rim size to get diameter, sidewall and circumference.
  • Roofing Cost Calculator
    Estimate your shingle roof replacement cost. Enter roof area, material and labor cost per square to get total material and labor pricing instantly.
  • Tire Pressure Temperature Calculator
    Calculate how tire pressure (PSI) changes with temperature using the ideal gas law. Enter your current PSI and temperatures to find the new pressure.
  • Deck Cost Calculator
    Estimate the total cost to build a deck from its size, material price per sq ft, and labor rate. Get a quick materials and labor breakdown instantly.
  • Concrete Cost Calculator
    Estimate concrete cost by slab dimensions and price per cubic yard. Enter length, width, thickness and unit price to get volume and total cost.
  • Linear Feet Calculator
    Convert total square footage to linear feet using board width, and estimate material cost per linear foot. Fast, free flooring & lumber calculator.

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