Industry-Specific

  • IP Broadcast / Network Address Calculator
    Calculate network address, broadcast address, subnet mask, usable host range and host count from any IPv4 address and CIDR prefix length.
  • R-Value & U-Value Insulation Calculator
    Calculate the R-value (thermal resistance) and U-value of insulation from material thickness and thermal conductivity. Add extra layers for total R.
  • Composite SLA / Combined Uptime Calculator
    Calculate combined SLA uptime for serial (dependent) or parallel (redundant) components. Get composite availability % and downtime per year, month and day.
  • S3 / Object Storage Request Cost Calculator
    Estimate monthly object storage costs from GET and PUT request counts plus stored GB. Works for AWS S3, GCS, Azure Blob, R2 and more.
  • Battery Life Runtime Calculator
    Estimate how long a battery will last from its mAh capacity, load current, and efficiency. Get runtime in hours and minutes instantly.
  • SRE Error Budget Calculator
    Calculate your SLO error budget in minutes and how much downtime budget remains. Free SRE uptime and reliability error budget calculator.
  • Fiber Optic Loss Budget Calculator
    Calculate total fiber optic link loss in dB from cable length, fiber attenuation, connectors and splices, plus your available power budget and link margin.
  • Watts to Amps Calculator
    Convert watts to amps instantly. Enter power in watts and voltage to find the current in amps using amps = watts ÷ volts. Free DC power calculator.
  • VSWR & Return Loss Calculator
    Convert between reflection coefficient, VSWR and return loss. Get mismatch loss and reflected power instantly for RF and antenna matching.
  • MTU & MSS Calculator
    Calculate TCP Maximum Segment Size (MSS) from MTU. Subtracts IP and TCP headers (typically 40 bytes) with IPv4/IPv6 and options support.
  • dBm to mW Calculator
    Convert dBm to milliwatts (mW) instantly. Enter a power level in dBm to get the equivalent power in milliwatts and watts using mW = 10^(dBm/10).
  • Oil Change Interval Calculator
    Find out how many miles remain until your next oil change. Enter your last change mileage, current odometer, and service interval.
  • Miles to Empty Calculator
    Estimate how many miles you can drive on the fuel left in your tank. Enter gallons remaining and your MPG to get your distance to empty instantly.
  • Yards of Concrete for a Slab Calculator
    Calculate how many cubic yards of concrete you need for a slab from length, width, and thickness, plus an optional waste allowance.
  • Monthly Payment to Affordable Car Price Calculator
    Turn a desired monthly payment into the maximum car price you can afford. Enter payment, APR, term, down payment and trade-in to see loan amount and total interest.
  • Auto Loan Payment Including Sales Tax & Fees Calculator
    Calculate your monthly auto loan payment including sales tax, fees, down payment and trade-in. See principal financed, total interest and total cost.
  • Fuel Range Calculator
    Calculate how far you can drive on a tank of fuel. Multiply litres in the tank by your km per litre to get your estimated driving range.
  • Mulch Bags for a Rectangular Bed Calculator
    Calculate how many bags of mulch you need to cover a rectangular garden bed. Enter length, width, depth, and bag size to get the exact bag count.
  • Bolt Circle Diameter Calculator
    Calculate the center-to-center chord spacing between bolt holes from the bolt circle diameter (BCD) and hole count, or back-solve the BCD.
  • Laminate/Flooring Boxes for a Rectangular Room Calculator
    Calculate how many boxes of laminate or flooring you need for a rectangular room, including a waste allowance for cuts and mistakes.
  • BTU for a Rectangular Room Calculator
    Calculate the air conditioner BTU needed to cool a rectangular room. Enter length and width in feet to size your AC unit with the 20 BTU/sq ft rule.
  • Wheel Revolutions to Distance Calculator
    Convert wheel revolutions into distance travelled. Enter wheel diameter and number of turns to get distance in meters, km, miles, and feet.
  • Packet Loss Percentage Calculator
    Calculate network packet loss percentage from packets sent and lost. Instantly see loss rate, packets received, and success rate for diagnosing connections.
  • CIDR to Subnet Mask Converter
    Convert a CIDR prefix (/24, /16, etc.) to a dotted-decimal subnet mask instantly. See total addresses and usable hosts for any IPv4 prefix length 0–32.

Categories