If you already have an account on our website, please log in to continue
242 ad-free calculators
Save entries between visits
Save notes and ideas
Your own dashboard
Data storage method
Savable entry sets per calculator
Data storage limit
Support Level Price
*$6.97 per year
*$12.97 per year
30-day money back guarantee
* Support level prices listed are introductory rates and will likely increase for first-time supporters once the number of supporters has grown to an optimal size, and as the number of bonus features increase.
Sign up today so you can enjoy future added bonuses at today's introductory price.
Age: I am age 17 or older.
Loss of Saved Data: I understand that the "Save" feature is merely a bonus feature, which is largely dependent on the stability and functionality of my web browser software, and therefore I will not hold AhaCalcs.com responsible should any of my saved data be lost or corrupted. Instead I will take steps to document/print-out my calculator entries in the event my saved entries get lost or corrupted.
Inaccurate Calculator Results: I understand it's not possible to test every combination of calculator entries, therefore I will not hold AhaCalcs.com responsible for any loss due to inaccurate calculations. Instead I will confirm the calculated results with my own calculations before making any decisions based on the calculated results.
General Information Only: The materials contained on this website are provided for general information purposes only and do not constitute legal or other professional advice on any subject matter. AhaCalcs.com does not accept any responsibility for any loss which may arise from reliance on information contained on this site.
Copyright Notice: Permission is given for the downloading and temporary storage of one or more of these pages for the purpose of viewing on a personal computer. The contents of this site are protected by copyright under international conventions and, apart from the permission stated, the reproduction, permanent storage, or retransmission of the contents of this site is prohibited without the prior written consent of AhaCalcs.com.
Third Party Links: Some links within this website may lead to other websites, including those operated and maintained by third parties. AhaCalcs.com includes these links solely as a convenience to you, and the presence of such a link does not imply a responsibility for the linked site or an endorsement of the linked site, its operator, or its contents (exceptions may apply).
We recognize that your privacy is important. This document outlines the types of personal information we receive and collect when you use AhaCalcs.com web and native apps, as well as some of the steps we take to safeguard information. We hope this will help you make an informed decision about sharing personal information with us.
AhaCalcs.com strives to maintain the highest standards of decency, fairness and integrity in all our operations. Likewise, we are dedicated to protecting our customers', consumers' and online visitors' privacy on our website.
AhaCalcs.com collects personally identifiable information from the visitors to our website only on a voluntary basis. Personal information collected on a voluntary basis may include name, postal address, email address, company name and telephone number.
This information is collected if you request information from us, participate in a contest or sweepstakes, and sign up to join our email list or request some other service or information from us. The information collected is internally reviewed, used to improve the content of our website, notify our visitors of updates, and respond to visitor inquiries.
Once information is reviewed, it is discarded or stored in our files. If we make material changes in the collection of personally identifiable information we will inform you by placing a notice on our site. Personal information received from any visitor will be used only for internal purposes and will not be sold or provided to third parties.
You have the ability to accept or decline cookies by modifying your Web browser; however, if you choose to decline cookies, you may not be able to fully experience the interactive features of the site.
A web beacon is a transparent image file used to monitor your journey around a single website or collection of sites. They are also referred to as web bugs and are commonly used by sites that hire third-party services to monitor traffic. They may be used in association with cookies to understand how visitors interact with the pages and content on the pages of a web site.
Browsers can be set to accept or reject cookies or notify you when a cookie is being sent. Privacy software can be used to override web beacons. Taking either of these actions shouldn't cause a problem with our site, should you so choose.
Children's Online Privacy Protection Act
This website is directed to adults; it is not directed to children under the age of 13. We operate our site in compliance with the Children's Online Privacy Protection Act, and will not knowingly collect or use personal information from anyone under 13 years of age.
In some cases, we may collect information about you that is not personally identifiable. We use this information, which does not identify individual users, to analyze trends, to administer the site, to track users' movements around the site and to gather demographic information about our user base as a whole. The information collected is used solely for internal review and not shared with other organizations for commercial purposes.
Release of Information
If AhaCalcs.com is sold, the information we have obtained from you through your voluntary participation in our site may transfer to the new owner as a part of the sale in order that the service being provided to you may continue. In that event, you will receive notice through our website of that change in control and practices, and we will make reasonable efforts to ensure that the purchaser honors any opt-out requests you might make of us.
How You Can Correct or Remove Information
Updates and Effective Date
Your Internet Protocol ("IP") address is usually associated with the place from which you enter the Internet, like your Internet Service Provider, your company or your university. We may use your IP address to help diagnose problems with our server, gather broad demographic information, and administer our website.
Kids and Parents
Although there is not - nor ever will be - anything intentionally offensive on my website, it is not intended for use by children, especially those under age 13. No one under age 13 is allowed to provide any personal information. Minors between the ages of 13 and 17 must get the permission of their parent(s) or legal guardian(s) before making purchases or asking questions on this site.
Agreeing to Terms