1 Rep Max Calculator

Version 2.0 · Effective July 28, 2026

Please read these Terms carefully. They include an assumption of risk, a release of claims including claims for ordinary negligence, a limitation of liability, and a class action waiver. These provisions affect your legal rights.

1. Acceptance of These Terms

These Terms of Use (this "Agreement") govern your access to and use of the 1 Rep Max Calculator website and web application (the "Application"), operated by Code Gardener LLC, a Colorado limited liability company ("Code Gardener," "we," "us," or "our"). By using the Application, or by selecting "Got it" on the notice presented to you, you confirm that you have had the opportunity to read this Agreement, that you understand it, and that you agree to be legally bound by it. The Application may store a local record in your browser of the version of this Agreement you accepted and the time of acceptance. If you do not agree, do not use the Application.

2. License and Permitted Use

Subject to this Agreement, Code Gardener grants you a limited, personal, non-exclusive, non-transferable, non-sublicensable license to access and use the Application for your personal, non-commercial purposes. This Agreement is a license, not a sale, and no title is transferred to you.

3. Restrictions

You shall not: (a) copy, modify, adapt, translate, reverse engineer, disassemble, decompile, or create derivative works based on the Application; (b) sell, rent, lease, transfer, or sublicense access to the Application; (c) remove or alter any proprietary notices; (d) use any automated means to access the Application in a manner that imposes an unreasonable load on it; or (e) use the Application for any unlawful purpose.

4. Released Parties

For purposes of this Agreement, "Released Parties" means Code Gardener LLC and its current, former, and future members, managers, owners, officers, directors, employees, contractors, agents, representatives, licensors, suppliers, service providers, hosting and platform providers, affiliates, successors, and assigns.

5. Fitness, Health, and Medical Disclaimer

THE APPLICATION PROVIDES GENERAL FITNESS AND WELLNESS INFORMATION ONLY. IT IS NOT MEDICAL ADVICE, A MEDICAL DEVICE, OR A SUBSTITUTE FOR PROFESSIONAL MEDICAL ADVICE, DIAGNOSIS, TREATMENT, PHYSICAL THERAPY, PERSONAL TRAINING, COACHING, OR SUPERVISION, AND IT DOES NOT DIAGNOSE, TREAT, CURE, OR PREVENT ANY DISEASE, CONDITION, INJURY, OR DISABILITY. THE APPLICATION IS NOT INTENDED FOR EMERGENCY USE.

Consult a qualified healthcare professional before beginning or changing any exercise, weightlifting, diet, or wellness program, especially if you have a medical condition, prior injury, pain, dizziness, or shortness of breath, are pregnant, take medication, or have been advised to limit physical activity. If you believe you are experiencing a medical emergency, call 911 or your local emergency number.

6. Assumption of Risk, Release, and Covenant Not to Sue

WEIGHTLIFTING AND PHYSICAL TRAINING ARE INHERENTLY DANGEROUS ACTIVITIES THAT CAN CAUSE PROPERTY DAMAGE, ILLNESS, SERIOUS INJURY, PERMANENT DISABILITY, PARALYSIS, OR DEATH. THE APPLICATION MAY PRODUCE ESTIMATES, FORMULAS, CHARTS, OR RECORDS THAT ARE INACCURATE, INCOMPLETE, UNSUITABLE FOR YOU, OR UNSAFE IF MISUSED. YOU ARE SOLELY RESPONSIBLE FOR YOUR EXERCISE DECISIONS, TRAINING LOADS, TECHNIQUE, EQUIPMENT, ENVIRONMENT, SPOTTERS, MEDICAL CLEARANCE, AND DECISION TO START, STOP, OR MODIFY ANY ACTIVITY.

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, YOU KNOWINGLY AND VOLUNTARILY ASSUME ALL RISKS ARISING OUT OF OR RELATED TO YOUR USE OF THE APPLICATION, YOUR RELIANCE ON ANY OUTPUT OF THE APPLICATION, AND ANY EXERCISE, FITNESS, OR WEIGHTLIFTING ACTIVITY UNDERTAKEN BASED ON, INFORMED BY, OR IN CONNECTION WITH THE APPLICATION. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, YOU RELEASE, WAIVE, DISCHARGE, AND COVENANT NOT TO SUE THE RELEASED PARTIES FOR ANY CLAIMS, DEMANDS, LOSSES, LIABILITIES, DAMAGES, COSTS, OR EXPENSES ARISING OUT OF OR RELATED TO YOUR USE OF THE APPLICATION, YOUR RELIANCE ON ANY OUTPUT OF THE APPLICATION, OR ANY EXERCISE, FITNESS, OR WEIGHTLIFTING ACTIVITY UNDERTAKEN BASED ON, INFORMED BY, OR IN CONNECTION WITH THE APPLICATION, INCLUDING CLAIMS FOR PERSONAL INJURY, DEATH, PROPERTY DAMAGE, OR ORDINARY NEGLIGENCE OF THE RELEASED PARTIES.

This release applies only to claims you may personally release and does not release any claim that applicable law does not permit you to release or waive, including claims arising from willful and wanton conduct, gross negligence, or fraud.

7. Accuracy of Estimates

One-repetition maximum formulas are statistical models derived from population studies. Individual results vary significantly and may differ substantially from any figure shown. The Application presents several formulas that frequently disagree with one another, which is itself an indication of the uncertainty involved. Do not attempt to lift a weight based solely on an estimate provided by the Application, and never without proper warm-up, appropriate equipment, competent spotting, and professional guidance.

8. Disclaimer of Warranties and Guarantees

THE APPLICATION IS PROVIDED "AS IS" AND "AS AVAILABLE," WITH ALL FAULTS AND WITHOUT WARRANTY OF ANY KIND. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, THE RELEASED PARTIES EXPRESSLY DISCLAIM ALL WARRANTIES, EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, INCLUDING WITHOUT LIMITATION: (A) ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, OR NON-INFRINGEMENT; (B) ANY WARRANTY ARISING FROM COURSE OF DEALING, USAGE, OR TRADE PRACTICE; (C) ANY WARRANTY THAT THE APPLICATION WILL BE UNINTERRUPTED, ERROR-FREE, VIRUS-FREE, SECURE, ACCURATE, COMPLETE, RELIABLE, OR THAT DEFECTS WILL BE CORRECTED; AND (D) ANY WARRANTY THAT THE APPLICATION OR ANY OUTPUT FROM IT WILL IMPROVE PERFORMANCE, PREVENT INJURY, OR BE SAFE OR APPROPRIATE FOR YOU. NO ORAL OR WRITTEN INFORMATION GIVEN BY ANY RELEASED PARTY SHALL CREATE ANY WARRANTY. YOU ASSUME ALL RISK AS TO THE QUALITY, ACCURACY, AND PERFORMANCE OF THE APPLICATION.

9. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, IN NO EVENT SHALL THE RELEASED PARTIES BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION DAMAGES FOR LOSS OF PROFITS, LOSS OF REVENUE, LOSS OF DATA, LOSS OF GOODWILL, BUSINESS INTERRUPTION, PERSONAL INJURY, DEATH, PROPERTY DAMAGE, OR ANY OTHER PECUNIARY OR NON-PECUNIARY LOSS, ARISING OUT OF OR RELATED TO THIS AGREEMENT OR YOUR USE OF OR INABILITY TO USE THE APPLICATION, EVEN IF A RELEASED PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES AND EVEN IF A REMEDY SET FORTH HEREIN IS FOUND TO HAVE FAILED ITS ESSENTIAL PURPOSE.

IN NO EVENT SHALL THE TOTAL AGGREGATE LIABILITY OF THE RELEASED PARTIES TO YOU FOR ALL DAMAGES, LOSSES, AND CAUSES OF ACTION ARISING OUT OF OR RELATING TO THIS AGREEMENT OR THE APPLICATION EXCEED THE GREATER OF: (A) THE AMOUNT YOU PAID TO CODE GARDENER LLC FOR THE APPLICATION IN THE TWELVE (12) MONTHS IMMEDIATELY PRECEDING THE CLAIM; OR (B) ONE HUNDRED U.S. DOLLARS (US $100.00). THIS LIMITATION APPLIES REGARDLESS OF THE FORM OF ACTION, WHETHER IN CONTRACT, TORT, STRICT LIABILITY, STATUTE, OR OTHERWISE. NOTHING IN THIS AGREEMENT EXCLUDES OR LIMITS LIABILITY THAT CANNOT BE EXCLUDED OR LIMITED UNDER APPLICABLE LAW.

10. Exclusive Remedy

YOU AGREE THAT YOUR SOLE AND EXCLUSIVE REMEDY FOR ANY DISSATISFACTION WITH OR DAMAGE CAUSED BY THE APPLICATION IS TO STOP USING IT. THE REMEDIES SET FORTH IN THIS AGREEMENT ARE EXCLUSIVE AND IN LIEU OF ALL OTHER REMEDIES AT LAW OR IN EQUITY, EXCEPT FOR REMEDIES THAT CANNOT BE WAIVED UNDER APPLICABLE LAW.

11. Hold Harmless and Indemnification

To the maximum extent permitted by applicable law, you agree to defend, indemnify, and hold harmless the Released Parties from and against any third-party claims, damages, obligations, losses, liabilities, costs, debts, and expenses, including but not limited to attorney's fees, arising from: (a) your unlawful use of the Application; (b) your violation of any term of this Agreement; or (c) your violation of any third-party right, including without limitation any intellectual property right, privacy right, publicity right, or proprietary right. This indemnity does not require you to indemnify the Released Parties for claims for your own personal injury, death, or property damage to the extent such indemnity is prohibited by applicable law.

12. Intellectual Property

The Application, including all content, features, and functionality, is owned by Code Gardener LLC and is protected by United States and international copyright, trademark, patent, trade secret, and other intellectual property or proprietary rights laws. You receive no rights in the Application other than the limited license granted in Section 2. All rights not expressly granted are reserved by Code Gardener LLC.

13. Data, Privacy, and Third-Party Services

Your unit preference, available plate selection, most recent entries, and a record of your acceptance of this Agreement are stored locally in your browser and are not transmitted to us. The Application uses Google Analytics to collect anonymous, aggregated usage information such as page views and feature interactions. Your use of the Application is also governed by our Privacy Policy, which is incorporated into this Agreement by reference. If this Agreement conflicts with the Privacy Policy regarding personal information, the Privacy Policy controls for that issue.

14. Data Accuracy and Data Loss

You are responsible for reviewing your records, maintaining your own backups, and deciding whether any output of the Application is appropriate for you. Because your data is stored in your browser, it may be lost if you clear your browsing data, use a different browser or device, or browse privately. Code Gardener LLC does not guarantee that records, calculations, or stored preferences will be accurate, complete, preserved, recoverable, uninterrupted, or error-free. You assume all risk of data loss, data corruption, inaccurate calculations, and unrecoverable records.

15. Governing Law, Dispute Resolution, and Class Action Waiver

This Agreement shall be governed by and construed in accordance with the laws of the State of Colorado, United States of America, without regard to its conflict of law provisions.

Before starting any legal proceeding, you agree to first notify Code Gardener LLC in writing, by email to [email protected], with a description of your dispute, and to allow at least thirty (30) days for the parties to try to resolve it informally. Many disputes can be resolved this way without the need for litigation.

Any dispute arising out of or relating to this Agreement that is not resolved informally shall be resolved exclusively in the state or federal courts located in Colorado, and you hereby irrevocably consent to personal jurisdiction and venue in such courts. Either party may instead resolve a qualifying individual dispute in small claims court.

YOU AND CODE GARDENER LLC AGREE THAT EACH MAY BRING CLAIMS AGAINST THE OTHER ONLY IN YOUR OR ITS INDIVIDUAL CAPACITY AND NOT AS A PLAINTIFF OR CLASS MEMBER IN ANY PURPORTED CLASS, COLLECTIVE, PRIVATE ATTORNEY GENERAL, OR REPRESENTATIVE PROCEEDING.

16. Severability and No Waiver

If any provision of this Agreement is found to be invalid or unenforceable, that provision shall be modified to the minimum extent necessary to make it enforceable, or severed if it cannot be, and the remaining provisions shall remain in full force and effect. No waiver of any term shall be deemed a further or continuing waiver of that term or any other term.

17. Termination

This Agreement is effective until terminated. Your rights under this Agreement will terminate automatically and immediately without notice if you fail to comply with any of its terms. Upon termination you must cease all use of the Application. Sections 4 through 16 and Section 18 shall survive termination.

18. Age Requirements

By using the Application, you represent and warrant that you are at least 18 years of age. If you are under 18, do not use the Application.

19. Entire Agreement and Updates

This Agreement, together with our Privacy Policy, constitutes the entire agreement between you and Code Gardener LLC with respect to the Application and supersedes all prior or contemporaneous understandings, agreements, representations, and warranties. Code Gardener LLC reserves the right to update this Agreement. Material changes will be reflected in a new version number and effective date above and may require renewed acceptance. Continued use of the Application after notice of changes constitutes acceptance of the revised Agreement.

20. Contact

Questions about this Agreement may be sent to [email protected].