Miscellaneous

  • Weighted Blanket Calculator
    Calculate the ideal weighted blanket weight from your body weight using the 10% + 1 lb rule, plus an 8–12% acceptable range.
  • Balloon Arch Calculator
    Estimate how many balloons you need for an arch. Enter arch length, balloon diameter, and balloons per cluster to get a quick, accurate total.
  • Bingo Number Generator
    Free online Bingo caller and number generator. Draw random balls without replacement from 1-75 or 1-90, with B-I-N-G-O letters and a live call board.
  • Binary / Decimal / Hex / Octal Converter
    Convert numbers between binary, octal, decimal and hexadecimal instantly. Enter a value, pick its base, and get all four number-system equivalents.
  • Bikini Size Calculator
    Estimate your bikini and bra size from underbust and bust measurements in cm. Get your band number and cup letter instantly with our free calculator.
  • Rug Size Calculator
    Free rug size calculator. Enter your room dimensions and desired floor border to get the ideal rug length, width, and area in feet.
  • Desk Height Calculator
    Find your ideal desk height in cm and inches based on your body height, for both seated and standing desk setups. Free ergonomic calculator.
  • Islamic Prayer Times Weekly Calculator
    Compute Fajr, Sunrise, Dhuhr, Asr, Maghrib, Isha and Islamic midnight for any location and date range, plus the Qibla direction, using the praytimes.org algorithm.
  • Yard, Feet, Inch to Meter Converter
    Convert length between metric (meters, centimeters) and imperial yard-pound units (yards, feet, inches) both ways. Exact universal conversion factors.
  • Pounds & Ounces to Kilograms/Grams Converter
    Convert weight between metric (kg/g) and avoirdupois pounds and ounces in either direction. Exact 1 lb = 0.45359237 kg. Free, universal mass converter.
  • Belt Size Calculator
    Use the Belt Size Calculator to find your correct belt size from your waist measurement. Quick, accurate rule: belt size = waist size + 2 inches.
  • Beer Pong Calculator
    Estimate how much beer you need for beer pong. Enter cups per table, beer per cup, number of tables and games to get total ounces, cans and gallons.
  • Beer Can vs. Beer Bottle CO2 Emissions Calculator
    Compare the life-cycle CO2 emissions of 500 ml aluminum beer cans versus glass beer bottles. Editable emission factors; defaults from a Japanese LCA study.
  • Maya Long Count to Gregorian/Julian Date Calculator
    Convert a Maya Long Count date (Baktun.Katun.Tun.Winal.Kin) to a Gregorian and Julian calendar date, Julian Day Number, plus Tzolkin and Haab positions.
  • Beauty Products Cost Calculator
    Estimate your true annual, monthly, and daily beauty and skincare spend based on each product's price and how long it lasts. Free, any currency.
  • Shoelace Length Calculator
    Calculate the ideal shoelace length from your eyelet pairs, spacing, and width gap. Get the right lace size in centimeters and inches with knot allowance.
  • BC to AD Year Calculator
    Calculate the number of years between a BC year and an AD year. Accounts for the missing year zero in the Gregorian/Julian calendar.
  • BBQ Party Calculator
    Plan your barbecue with ease. Enter your guest count to estimate how much meat, sides, and drinks you need for the perfect cookout.
  • Reading Speed Calculator
    Calculate your reading speed in words per minute (WPM). Enter words read and minutes spent to find your WPM and words per hour instantly.
  • Audiobook Speed Calculator
    Calculate how long an audiobook takes at 1.25x, 1.5x, 2x or any speed. See your adjusted listening time and how much time you save.
  • Reading Challenge Calculator
    Plan your reading goal: see how many books to read per week, month or year and how many days you get per book to hit your target on time.
  • Reading Time Calculator
    Estimate how long a text takes to read. Enter word count and reading speed (WPM) to get reading time in minutes and seconds instantly.
  • Diaper Calculator
    Free diaper calculator estimates how many diapers your baby needs over any period and the total cost based on diapers per day and price per diaper.
  • Linear Inches Calculator
    Calculate the total linear inches of your luggage by adding length, width, and height. Check airline size limits (e.g. 62 linear inches) instantly.

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