All tools
150 tools available
Ovulation Calculator
Estimate your next ovulation date and fertile window from your cycle.
Roofing Calculator
Estimate roofing squares and shingle bundles needed from roof dimensions.
Amortization Schedule Calculator
Generate a full month-by-month loan amortization schedule.
Mean Calculator
Quickly calculate the arithmetic mean of a list of numbers.
Random Phone Number Generator
Generate correctly-formatted fake phone numbers for testing — US, UK, India & more.
BTU Calculator
Estimate the BTU heating/cooling capacity needed for a room.
Binary Translator (Text ⇄ Binary)
Convert text to binary and binary back to text instantly.
Fraction Calculator
Add, subtract, multiply or divide two fractions with simplified results.
Savings Calculator
Project your savings growth with regular deposits and compound interest.
Exponent Calculator
Calculate a base raised to any power, including negative and fractional exponents.
Subnet Calculator
Calculate network address, broadcast address and host range from an IP and CIDR.
Body Shape Calculator
Estimate your body shape category from bust, waist and hip measurements.
Date Calculator
Add or subtract days, weeks, months or years from a date.
Conception Calculator
Estimate the likely conception date from your due date or last period.
Paint Calculator
Estimate how many gallons of paint you need from wall area and coats.