About Crown Calculator
Free online calculators that show their working, so you can check every result yourself.
Last updated
Who runs this site
Crown Calculator is an independent site run by Abdul Manan. You can reach me at nitrolabs@gmail.com or through the contact page.
What the site does
Each calculator gives you the answer straight away, then explains how it got there: the formula, each step of the working, and tables of nearby values. The aim is a result you can trust because you can follow it, not just a number in a box.
The temperature calculators are available now:
New calculators are added only once they are finished and tested.
How results are calculated
Temperature conversions use the exact defining formulas for the Celsius, Fahrenheit and Kelvin scales, as published by the US National Institute of Standards and Technology (NIST). Results are rounded to two decimal places for display. The conversion code is covered by automated tests, including edge cases such as absolute zero, negative values and the point where Celsius and Fahrenheit meet at −40.
Pages that mention health or cooking temperatures give general reference information and cite their sources. They are not medical or professional advice; see the disclaimer.
Corrections
If you find a wrong result, a typo or a broken link, please email nitrolabs@gmail.com. Corrections are made as quickly as possible.
How the site is funded
The calculators are free to use. The site shows ads served by Google AdSense, which pay for hosting and development. Advertisers have no say in the content or the results. The privacy policy explains how ads use cookies and how to control them.