Pick Color with various kinds of color pickers. Multiple options to choose color in HTML format are available.
Prevent duplicate tabs
Prevent duplicate tabs
Convert among bits, bytes, kilobytes, megabytes, gigabytes, terabytes, petabytes and more.
Volume of a Cylinder
Compute volume of a cylinder given radius of base and height of the cylinder.
Test internet download speed by downloading image from any of your frequently visited sites. Provide image link and size for test
Roman Numeral Converter
Convert Arabic numbers to Roman Numeral and vice versa!
Sales Tax Calculator
Simple Calculator to compute the Sales Tax given the Cost / Prices of goods or services and the applicable tax amount
Surface Area of a Sphere
Computes surface area of sphere based on given radius of the sphere. Also calculates Volume.
Calculate Percentage value by applying percentage on an amount. Also calculates final amount by adding percent amount
Net Present Value
Computes the Net Present Value of the future cash flows based on given discounted rate and period
Convert from one currency to another and create and share custom set of currency conversions
Metric Length Converter
Metric Length and Distance Converter to convert among, meter, kilometer, millimeter, centimeter, nanometer and more
Convert among metrics like zetta, exa, peta, tera, giga, meta, kilo, hecto, deca, centi, milli, micro, nano, pico, femto & more
Computes Love compatibility between two names based on letters and words. Just for fun!
Link To Hyperlink
Convert links / URLs to Hyperlinks so that those are clickable as well as you can use Right Click and Save As...
Textbox Auto Resizer
Automatically resizes input fields and textareas while you're typing
Convert from meters to feet, centimeters to inches, inches to feets. Range of common length conversions are available
HTML to Text
Extract Text from HTML code and make the content more readable than code
How many Millions in a Billion
Convert among large number like million, billion, trillion and so no...
Future Value Calculator
Calculate future value of present asset or cash based on potential interest rate and inflation
Encode Decode HTML
Encode HTML to show it in the HTML pages a code instead of rendered HTML. Decode HTML to convert it back to HTML code
Encode Decode Base64
Converts from ASCII or Unicode to Base64 by encoding the text and back from Base64 to ASCII or Unicode by decoding it
QCLean:Remove Facebook Ad,Suggested Page&Post
Remove ads, suggested pages and posts on News feed of Facebook.
Amazon for Opera
This is an official Amazon extension for Opera
Search Engine Result Counter
Adds a counter to search Engine Results to see the rank and to clearly distinguish results from adds. Supports Google, Bing, DuckDuckGo, Startpage, Yahoo and Yandex
Count the letters in the text. Also provide information related to number of non-whitespace characters, words and lines
Visually appealing simple calculator! can be used with mouse or keyboard
Area of a Triangle
Compute area of triange give base and height of triangle or all three sides of triangle. Also computes side of triangle given others
Area of a Circle
Calculate area of a circle given any of the following, radius, diameter or circumference and vice versa
YouTube Lyrics by Rob W
Instant lyrics on YouTube, Spotify and other sites in a flexible panel. 40+ sources ensure that lyrics are always found
APR to APY
Convert Annual Percent Rate to Annual Percent Yield based on various compounding methods ranging from daily to yearly
Convert among measure of angle viz., degree, radian, mil, grad, minute, second, point, circle etc.
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