About CalcHub
239 calculators — free, fast, and always accurate.
We are a group of IT professionals enthusiastic in creating quality free tools and content on the Internet. The main purpose of this website is to provide a comprehensive collection of free online calculators for ease of public use.
The calculators on this site are grouped into 4 sections: financial, fitness & health, math, and others. All of the calculators were developed in-house. Some calculators use open-source JavaScript components under different open-source licenses. More than 90% of the calculators are based on well-known formulas or equations from textbooks, such as the mortgage calculator, BMI calculator, etc. If formulas are controversial, we provide the results of all popular formulas, as can be seen in the Ideal Weight Calculator. Calculators such as the love calculator that are solely meant for amusement are based on internal formulas.
The results of the financial calculators were reviewed by our financial advisors, who work for major personal financial advising firms. The results of the health calculators were reviewed and approved by local medical doctors. More than 99% of the descriptive content was developed in-house with a small amount of content taken from wikipedia.org under the GNU Free Documentation License. The descriptive content of the financial calculators was created and reviewed by our financial team. The descriptive content of the health calculators was reviewed by local medical doctors.
This site is owned and operated by CalcHub LLC.
Frequently Asked Questions
Can I link from my website to a calculator on CalcHub?
A: Yes, please feel free to link to any page on calchub.example.com.
How should I send suggestions or report problems?
A: We appreciate and welcome any suggestions and bug reporting. Please write to us via the contact information below. If it involves a calculator, please include the URL of the calculator and the parameters you used.
Do you have an API for the calculators?
A: Sorry, we do not have an API available.
How can I advertise on CalcHub?
A: Please use Google Ads placement targeting. Please do not try to reach us on advertisement optimization, header bidding, etc.
How do I delete my data from CalcHub?
A: CalcHub does not store any personal data on our servers. All data is stored locally in your browser via localStorage. You can clear all stored data at any time via your browser settings.
Contact Us
We can be reached at [email protected]. Normally, we will respond within 2 business days.
Mailing Address:
CalcHub LLC
123 Calculator Lane
San Francisco, CA 94105