What is a one rep max?

A one rep max (1RM) is the maximum weight you can lift for a single repetition of a given exercise. It's a standard measure of strength used by athletes and trainers.

How accurate are 1RM calculators?

1RM calculators provide estimates that are typically accurate within 5-10% for most people. They use scientifically validated formulas like Epley and Brzycki based on your performance at lower rep ranges.

Is testing your actual 1RM safe?

Testing actual 1RM carries injury risk, especially for beginners. Using a calculator to estimate your 1RM from submaximal lifts is safer and recommended for most training programs.

Privacy Policy - OneRepMaxCalculator.io

Last Updated: December 31, 2025

OneRepMaxCalculator.io is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and protect information when you use our website and strength training calculators.

Information We Don't Collect

We do NOT collect or store:

Personal identification information (name, email, address)
Calculation results or training data
User accounts or login credentials
Personal health or fitness information
Browser history or tracking data
IP addresses or location data

All calculations happen locally in your browser. Nothing is sent to our servers or stored in our databases.

Information We Automatically Collect

Like most websites, we automatically collect some technical information for website maintenance and improvement:

Anonymous usage statistics: Page views, calculator usage patterns
Technical information: Browser type, device type, screen resolution
Performance data: Page load times, error reports
General location: Country/region level (not specific addresses)

This information is aggregated and anonymous - it cannot be traced back to individual users.

How We Use Information

We use the limited information we collect for:

Website Improvement: Understanding which calculators are most popular
Technical Support: Identifying and fixing bugs or performance issues
Content Development: Creating new calculators and features users want
Security: Protecting our website from malicious activity
Legal Compliance: Meeting our legal obligations

Cookies and Local Storage

We do NOT use tracking cookies. However, we may use:

Essential cookies: For basic website functionality (if any)
Local storage: To remember your preferences (like unit selection)
Session storage: For temporary calculator state during your visit

You can disable cookies in your browser settings. This won't affect calculator functionality.

Third-Party Services

We may use third-party services for:

Website hosting: Secure server infrastructure
Analytics: Anonymous website traffic analysis
Content delivery: Fast loading of website assets

These services have their own privacy policies and we are not responsible for their practices. We only use services that respect user privacy.

Data Security

Since we don't collect personal information, our security focus is on:

Website security: Protecting against hacking and malware
Secure connections: HTTPS encryption for all website traffic
Safe code: Regular security audits of our website code
Server security: Protecting our hosting infrastructure

Your Rights

Since we don't collect personal information, you don't need to worry about:

Data access requests (we have no data to access)
Data deletion requests (we have no data to delete)
Marketing opt-outs (we don't send marketing)
Account management (we don't have user accounts)

If you have privacy concerns, please contact us at privacy@onerepmaxcalculator.io

Children's Privacy

Our website does not collect personal information from anyone, including children under 13. However, we recommend that minors consult with parents or guardians before using fitness calculators or making training decisions.

International Users

OneRepMaxCalculator.io is accessible globally. We comply with applicable privacy laws including:

GDPR: General Data Protection Regulation (EU)
CCPA: California Consumer Privacy Act
PIPEDA: Personal Information Protection and Electronic Documents Act (Canada)

Since we don't collect personal information, our privacy practices naturally comply with these regulations.

Changes to This Policy

We may update this Privacy Policy occasionally. Changes will be posted on this page with an updated "Last Updated" date. Significant changes will be highlighted on our website.

Our commitment to privacy won't change. We'll always be transparent about what data we collect and how we use it.

Contact Information

If you have questions about this Privacy Policy or our privacy practices:

Email: privacy@onerepmaxcalculator.io

We'll respond to privacy-related inquiries within 7 days.

Privacy Summary

In short: We don't collect your personal information. Our calculators work entirely in your browser. We only collect anonymous, aggregated statistics to improve our website. Your privacy and data security are our priorities.

Key points:

✅ No personal data collection
✅ No user accounts required
✅ No tracking cookies
✅ Calculations happen locally
✅ Anonymous usage statistics only