GTL: Calculators, Colour Pickers and 10 minute Emails [Aug 2025]

In this edition of GTL, we explore a variety of tools to help you and your families produce their best work and avoid being spammed. It’s essential to recognize that sharing data online means these sites store it on their servers. While this may not be a problem for everyone, exercise caution when uploading sensitive media. Some sites use uploaded data to train their AI models, and others may sell it to data brokers.

Calculator.net and CalculatorSoup.com

Calculators for all occasions

URL: https://www.calculator.net

 

URL: www.calculatorsoup.com

 

 

Who needs a standalone calculator today? You can ask Google, Alexa, or open the calculator app on your phone or computer. If you're looking for something beyond standard arithmetic, Calculator.net and CalculatorSoup.com offer a wide range of specialized calculators, grouped by category. In addition to providing results, they explain the underlying concepts, helping you understand how each answer is derived.

Both sites have a long pedigree—CalculatorSoup launched in 2006 and Calculator.net in 2008—and they’re still actively maintained, as shown by their up-to-date copyright. Financial calculators default to the dollar symbol and can’t be adjusted. Temperature calculators let you switch between Celsius and Fahrenheit, although the explanatory text uses American units. Some calculators are relevant only to U.S. audiences. While there’s overlap between the two collections, each site also offers unique tools—for example, Calculator.net provides weather-related calculators.

 

PickColorOnline.com

Get the exact colour of a object

URL: https://pickcoloronline.com/

 

 

Unlike most free online colour pickers, PickColorOnline lets you sample any colour on your screen without first uploading an image. Whether you’re viewing a web page, PDF document, or Office file, just click “*Pick color*” and drag the eyedropper over the pixel you want. You can display results in HEX, CMYK, RGB, or HSL formats.

One limitation is that this site only works in Chromium-based browsers. Firefox and Safari users will be routed to the “*Ohh nooo! You can not pick a color*.” page. If that happens, search for “*free image color picker tool*” to find an alternative.

 

10 Minute Mail

Temporary email addresses

URL: https://10minutemail.com/

When a site insists on an email address before you can proceed, you risk spam or unwanted tracking. 10MinuteMail solves this by giving you a self-destructing address that expires after ten minutes—enough time to receive the validation link and move on. As soon as you land on the site, you’re assigned a temporary email and a countdown timer starts. If you need more time, just click “*10 more minutes!*”

 

 

 

If you would like to propose a link for inclusion in the GTL, share it as a comment or via DM.

Only share a link if:
  1. You have verified it.
  2. It is free. Free means without restrictions and limitations.
  3. It is in English.
  4. It is Legit.

 

Follow This, That and (Maybe), the Other:

 

 

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