Membership of ExcelCalcs makes you more productive in solving and presenting mathematical problems using MS Excel. There are two membership plans to choose from depending on how you intend to use ExcelCalcs.

Commercial Users 

If you use XLC for commercial purposes you need to pay for an annual XLC Pro subscription.

Educational Users

If you use XLC for personal educational use and expressly not for commercial purposes you can enjoy all the benefits for free but at reduced service level by taking an XLC Ed subscription.

Compare the Subscription Plans

What are the difference between XLC Ed and XLC Pro Add-ins for MS Excel?

The two levels of functionality are compared in this video. XLC Ed renders equations in exactly the same way as XLC Pro but:

• XLC Ed is for educational use only and may not be used commercially.
• XLC Ed renders 1 in 20 equations with a watermark stating "XLC Free Educational Use Only".
• XLC Ed renders equations with a hyperlink to the ExcelCalcs site.
• XLC Ed has a limited life and will require reinstallation every 4 months.

An active subscription with ExcelCalcs generates a user software release key which switches on full XLC functionality. Provided your XLC Pro subscription is renewed XLC will continue to have full functionality and XLC will never expire or require re-installation. If your subscription is not renewed your copy of XLC will revert to XLC Ed functionality. You will be warned about renewing your subscription the first time at 60 days before expiration, then at 30 days before and finally 10 days before.

We are very grateful to users who support us by choosing our XLC Pro paid subscription plan. Log into the site and click on "My Subscription" on the site "User Menu" to renew your subscription or check your subscription status.

Contributors and How to Earn a Subscription

If you have already made a contribution prior to the introduction of subscriptions we want to say thank you and give you a free subscription. The following users have been given a free XLC Pro subscription Alex Tomanovich, Shaiq Khan, David Hunter,  Mick Bull, Andy Magee, Robert Hunn, Jason M. McQueen, Billy NoMates, Yakov Polyakov, Thomas P. McKeon, Doug Jenkins, Dino Dzananovic, trey, Clyde Hancock, Bob May,  John Riley, Lem Gaswint,  Terry Foxon,  Jimmy Doh,  Michael Henry,  Mark Rawlings,  Mir Abdulali,  Carlos Lusardi,  David Sumner,  Alastair MacLean,  Nick Partridge,  Darren Reid,  Ian Fitzgerald-Jones,  Mike Stickelman,  Gary Ehlert,  Valerie Eskelsen,  Andre Sidler,  Blake Haley,  Mike Lawson,  Thomas Patterson,  Dave Costello, Phil Stunell and Kent Chen.

If you have given us a donation (of any amount) you also receive a free XLC Pro Subscription. Our thanks and a free subscription go to the following users Fernando Morales, Nelson Turcotte, Daniel Schmitz, IFJ Winterberg, Carlos Polanco, Tadeusz Mankowski, Scott Hibbs and Wayne Godin.

We will continue to reward any future site contributions with free subscriptions and we have prepared some guidance notes to help you contribute. You will have to post a ‘contributor's pitch’ in the forum. If a site administrator likes your pitch he’ll instruct you to proceed. We’ll issue a free subscription when we receive your contribution. Your pitch will have to meet some basic requirements and it will help if you win the support of other members in the forum. 

Proceed to the subscription sign up page.