Number Tools


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

Bit Shift Calculator

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

Byte Calculator

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

Bandwidth Calc

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.



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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