Terms of Use

A set of free academic calculators and explanatory guides, provided for educational and planning use. You may use them for yourself, for your students, or for anyone you are helping, without an account and without payment.

An account is optional. It adds the ability to save calculations and academic data; it does not unlock any calculation or any result.

Nothing produced here is an official grade, GPA, transcript, attendance record or statement of academic standing. A result is an estimate based on the numbers you entered and the settings you chose.

Your institution's own record is the authoritative one. Where a figure here and a figure from your school disagree, your school is right — and we would like to know, because the disagreement may be our defect.

Do not rely on a calculation here as the sole basis for a decision that matters: dropping a course, accepting an offer, skipping a class, changing a program. Speak to an instructor, an advisor or the registrar, who can see constraints no calculator knows about.

There is no single US grading standard. Institutions differ on grade point values, plus and minus grades, percentage ranges, course weighting, repeat and replacement policies, which courses count toward a GPA, how transfer credit is treated, attendance requirements and rounding.

Default settings on this site are common conventions, never official standards, and every one can be changed. Choosing settings that match your school is your responsibility, because we have no way to know what they are. A result calculated on the wrong scale will be confidently wrong.

The calculations are tested extensively, and a result that disagrees with your institution is treated as a defect worth investigating. But accuracy has limits that no amount of testing removes:

• Input. A result can only be as accurate as the numbers and settings given to it.
• Policy. Curves, extra credit, dropped scores, minimum exam requirements and rounding practices are applied by your instructor and cannot be predicted.
• Local rules. A school may compute something in a way no general tool anticipates.

The site is provided as it is, without warranty that it will be uninterrupted, error-free, or suitable for any particular purpose. To the extent the law allows, we are not liable for any loss arising from reliance on a result, academic or otherwise.

That is a limitation of liability, not an excuse. If something here is wrong, tell us and it will be fixed.

You agree not to:

• attempt to disrupt, overload or gain unauthorised access to the site or anyone's account;
• use automated means to scrape or bulk-request pages in a way that degrades the service for others;
• submit content through the contact or reporting forms that is unlawful, abusive or deliberately false;
• misrepresent output from this site as an official academic record;
• republish the calculators or their content as your own.

Using the calculators heavily is not abuse. A teacher grading two hundred papers is exactly who the tools are for.

You are responsible for keeping your password to yourself and for what happens under your account. Give an accurate email address — it is the only way to recover access.

You can delete your account at any time from your settings, which removes it and the data belonging to it immediately and permanently. We may suspend an account that is being used to attack the site or to abuse other people; that is the only circumstance in which we would.

The calculators, guides, wording and design of this site belong to its operator. You may link to any page freely, quote from it with attribution, and use results for your own purposes, academic or professional.

Anything you enter into a calculator stays yours. Anything you save to an account stays yours, and is not used for anything beyond showing it back to you — see the privacy policy.

The site changes: calculators are corrected, guides are revised, features are added and occasionally removed. These terms may be updated to match. Continuing to use the site after a change means accepting the revised version.

Questions about any of this: get in touch.