We'd love to hear from you! Get in touch with our team
We typically respond within
24-48 hoursServing fitness enthusiasts
WorldwideMonday - Friday: 9 AM - 6 PM PKT
Saturday: 10 AM - 4 PM PKT
Sunday: Closed
LeanFFMI is committed to providing the best fitness calculation tools and resources to help you achieve your health and fitness goals. Whether you have questions, feedback, or need assistance, we're here to help.
Need help understanding your results or how to use our calculators? We provide detailed guidance on BMR, TDEE, body composition, strength ratios, and all our fitness tools.
Found a bug or experiencing technical difficulties? Let us know so we can fix it promptly and improve the user experience for everyone.
Have ideas for new calculators or features? We value your input and continuously work to add tools that benefit our community.
Interested in collaborating, advertising, or partnering with LeanFFMI? We work with fitness brands, coaches, and content creators.
Are you a fitness professional or writer interested in contributing to our blog? We welcome high-quality, evidence-based fitness content.
Have questions about fitness, nutrition, training, or how to interpret your calculator results? Our team is here to point you in the right direction.
We value every message we receive and strive to provide helpful, timely responses to all inquiries.
Technical Support: Calculator errors, website issues, mobile compatibility, login problems
Calculator Questions: How to use tools, interpreting results, which calculator to use, accuracy concerns
Content Requests: Suggestions for new calculators, topic requests, feature requests
Business Inquiries: Advertising opportunities, sponsorships, affiliate programs, white-label solutions
Press & Media: Interview requests, citations, media kit requests, expert commentary
Legal & Privacy: GDPR requests, privacy policy questions, terms of service, copyright
Note: LeanFFMI provides fitness calculation tools and educational content. We are not medical professionals and cannot provide personalized medical, nutritional, or training advice. For health concerns, please consult qualified healthcare providers.
To help us serve you better and potentially get faster answers, please check these resources first:
Most calculator pages include detailed FAQ sections addressing common questions about formulas, accuracy, interpretation, and usage. Visit our Calculators page to find specific tool FAQs.
Each calculator includes comprehensive instructions, examples, and explanations of the science behind the calculations. Scroll through the content sections on any calculator page.
Our fitness blog covers topics like training programs, nutrition strategies, body composition, and how to use calculator results effectively.
For technical issues, ensure you're using an updated browser (Chrome, Firefox, Safari, Edge). Clear your cache and cookies, disable ad blockers temporarily, and try accessing the site in incognito/private mode.
When contacting us about technical issues, please include:
LeanFFMI collaborates with fitness professionals, brands, and content creators who share our commitment to evidence-based fitness information.
We offer various advertising options for fitness-related products and services:
We work with select fitness brands through affiliate partnerships. If you offer quality fitness products, supplements, equipment, or services, we'd love to hear from you.
We accept high-quality guest posts from fitness professionals, registered dietitians, certified trainers, and health experts. Requirements:
Looking to integrate our calculators into your fitness app or website? We offer API access and white-label calculator solutions for qualified partners. Contact us to discuss custom implementations.
We aim to respond to all inquiries within 24-48 hours during business days (Monday-Friday, 9 AM - 6 PM PKT). Complex technical issues or partnership inquiries may require additional time. You'll receive an automated confirmation email immediately upon submission, and we'll follow up with a personalized response as soon as possible.
LeanFFMI provides educational content and calculation tools, but we cannot provide personalized medical, nutritional, or training advice. Our calculators offer general estimates and guidelines, not individual prescriptions. For personalized fitness plans, please consult certified personal trainers, registered dietitians, or healthcare professionals who can assess your specific situation, health history, and goals.
Yes, absolutely. We take privacy seriously and comply with international data protection regulations including GDPR. Your contact information is used solely to respond to your inquiry and is never sold, shared, or used for marketing without your explicit consent. We maintain secure systems and encrypt all data transmissions. See our Privacy Policy for complete details.
Yes, we provide API access and white-label calculator solutions for fitness apps, websites, and businesses. Our APIs include BMR, TDEE, body fat percentage, FFMI, strength ratio calculators, and more. Pricing and implementation details vary based on usage volume and customization requirements. Contact us with "API Access" in the subject line to discuss your specific needs.
We appreciate bug reports! Please use the contact form with "Report a Bug" as the subject. Include: (1) which calculator has the issue, (2) what inputs you used, (3) what result you expected vs. what you got, (4) your device/browser information, and (5) screenshots if possible. This information helps us identify and fix issues quickly. We test all calculators thoroughly, but your feedback helps us maintain accuracy.
Absolutely! We love suggestions from our community. Use the contact form with "Feedback & Suggestions" as the subject. Tell us what calculator or feature you'd like to see, why it would be valuable, and how you'd use it. While we can't implement every request, we carefully consider all suggestions and prioritize based on community interest, scientific validity, and practical value. Many of our current calculators were inspired by user requests.
Yes, we accept high-quality guest posts from qualified fitness professionals, registered dietitians, certified trainers, and health experts. Content must be original, evidence-based, 1,500+ words, and provide genuine value to our audience. We review all submissions for accuracy, writing quality, and relevance. Contact us with your proposed topic, credentials, and 2-3 writing samples. We typically respond within 5-7 business days with feedback.
We offer several advertising options including display ads, sponsored content, newsletter placements, and calculator sponsorships. Our audience consists of fitness enthusiasts, athletes, coaches, and health-conscious individuals actively seeking fitness tools and information. Contact us with "Advertising Inquiry" as the subject, and include information about your product/service, target audience, and advertising goals. We'll send our media kit with traffic statistics, demographics, and pricing.
We offer white-label calculator solutions and embeddable widgets for websites, apps, and businesses. You cannot simply copy our calculator code, as it's protected by copyright. However, we provide legitimate options: (1) API access for developers, (2) iframe embeds with attribution, or (3) custom white-label implementations. Contact us with details about your site, intended use, and expected traffic for licensing options and pricing.
Every email we send includes an "Unsubscribe" link at the bottom. Click that link to be immediately removed from our mailing list. You can also contact us directly and we'll remove you within 24 hours. We respect your inbox and only send relevant fitness content, calculator updates, and occasional announcements. You can also manage your email preferences to receive only specific types of updates.