Random Number Generator – Pick Numbers in a Range
Generate one or multiple random integers inside a custom minimum and maximum range using browser cryptography.
Converters & Calculators
15 toolsQuick math and conversions without the guesswork. Whether you need to figure out percentages swap units or decode timestamps you get straight answers immediately.
Date Difference Calculator – Days Between Two Dates
Calculate the number of days, weeks, hours and minutes between two calendar dates online.
Percentage Calculator – Percent Of, Change & Difference
Calculate a percentage of a number, find what percent one value is of another and measure percentage change.
Aspect Ratio Calculator – Image & Video Dimensions
Calculate proportional image and video dimensions from width, height and aspect ratio online.
Bandwidth Calculator – File Download & Transfer Time
Estimate file download or transfer time from file size and Mbps or Gbps connection speed.
Data Storage Converter – MB, GB, TB, MiB & GiB
Convert bytes, KB, MB, GB and TB plus binary KiB, MiB, GiB and TiB units online.
Time Unit Converter – Seconds, Minutes, Hours & Days
Convert milliseconds, seconds, minutes, hours, days and weeks with a fast online time unit calculator.
Binary, Decimal & Hex Converter – Number Base Calculator
Convert integers between binary, octal, decimal and hexadecimal number systems online.
PX to REM Converter – CSS Pixel & REM Calculator
Convert CSS pixels to REM units and REM back to pixels using a custom root font size.
Median Calculator
Calculate the median of a list of numbers, sort the values, and quickly see the count, smallest value and largest value.