Play the computer or another human
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Answer trivia questions
Country and Phone Dialing Codes
Maximize value with limited capacity.
Multiple tests to assess your hearing
Visualize Audio Frequencies
Convert cURL commands to source code; over 25 languages supported.
Origins of common superstitions.
A timer / countdown tool
Free online calculator
Encode and decode URLs, query strings, and special characters.
Age, zodiac, birthstones, etc.
Send HTTP requests and test webhooks with ease
Find the perfect pet companion.
Shoe and clothing size converter.
Network Speed Test.
View satellite images by day taken
Minify, obfuscate or beautify your code
Free Online Metronome for Musicians
Calculate commissions based on sales
Calculate loan payments
Find the right emoji for your mood.
Extract above-the-fold CSS from any webpage
Online editor with many features
Uses army, navy, and BMI methods.
Convert video to ASCII characters
Encode / decode text in Base64
Convert international ring sizes
Plot mathematical functions, explore graphs interactively, and perform analysis.
Simple IQ Test