Number Tools

Use our Number tools to generate random numbers, calculate next leap year, or perform bitwise operations.

Math Calculator

Perform addition, subtraction, multiplication and division calculations.

Byte Calculator

Convert between bytes, kilo bytes, mega bytes, giga bytes and tera bytes.


Determine time required to download a specific file given the bandwidth speed.

Binary Converter

Convert a decimal number to Binary or Hexadecimal, or vice versa.

Random Number

Generate pseudo-random numbers in sequence as if you're throwing a dice.

Leap Year

Check if a particular year is a leap year, or determine leap years from a range.

Date Calculator

Date Calculator will calculate duration between dates, or add/subtract days.

Lunar Calculator

Convert a Gregorian calendar date to the Lunar (Chinese) calendar date.

Lotto Numbers

Let us generate your pseudo-random lottery numbers for your next lucky tickets.

Bit Shift Calculator

Perform bit-shift operation on a hexadecimal, decimal, octal and binary number.

Percent Calculator

A tool used to calculate the percentage of a given value in relation to another.

Percentage Change

Calculate the change in percentage, or apply a perchange change to a value.

RDI Calculator

Calculate your RDI of various nutrients based on your age, sex and weight.


Calculate a distance between two latitude and longiitude pair of coordinates.

Sort Numbers

Sort numbers in ascending or descending order, and download results.

Other Tools

We've put together a collection of domain, network and webmaster tools for developers and netizens. The tools are offered for ethical use only, and use of the tools to harm others are strictly prohibited. All available tools are free to use. You're welcome your suggestions and feedback on the tools we offer.

The icons used on this Tools page are contributed from Flat Icon.

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