Math & Numbers
Calculate water costs based on usage and water rates
water-bill-calculatorMath & Numbers
Convert between different speed units (m/s, km/h, mph, knot, mach, etc.)
speed-converterMath & Numbers
Convert between different time units (seconds, minutes, hours, days, weeks, etc.)
time-converterMath & Numbers
Convert between different volume units (liters, gallons, cups, cubic meters, etc.)
volume-converterMath & Numbers
Convert numbers between different formats (decimal, binary, hexadecimal, octal)
number-converterMath & Numbers
Convert between different temperature units (Celsius, Fahrenheit, Kelvin, Rankine)
temperature-unit-converterMath & Numbers
Convert between different weight units (kilograms, pounds, ounces, grams, etc.)
weight-unit-converterCalculator
Calculate probabilities for dice rolls and combinations
dice-probabilityCalculator
Calculate winning probabilities for various lottery games
lottery-probabilityDate & Time
Check if date ranges overlap with each other
date-overlap-checkerDate & Time
Validate if dates are within a specified range
date-range-validatorDate & Time
Calculate holidays for a specific year and country
holiday-calculator