Body • Weight
BMI Calculator for Women
Quickly check your Body Mass Index to know if you're underweight, normal, or overweight. Simple, accurate, and women-friendly.
Women-First • Fast • Free
Trusted Women’s Health Calculators & Wellness Tools
Welcome to TrendingUSA, your one-stop platform for free women’s health tools and calculators 2025. Our single-page site gives you instant access to the most trusted health resources including the BMI calculator USA, BMR calculator online free, calorie calculator for women, ovulation calculator USA, and pregnancy due date calculator. Each tool is private, fast, and accurate, helping women track weight, calculate calories, plan fertility, and monitor pregnancy health in one place. — not medical advice.
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Women’s Health Calculators
Discover all your favorite women’s health calculators in one place at TrendingsUSA.com. From a simple Period Calculator that predicts your next cycle, to a Pregnancy Week Tracker that guides you week by week, a PCOS Risk Checker to know your chances, and a BMI & Water Intake Calculator for daily health — everything is free, quick, and easy to use. These tools are designed to help you stay informed, whether you are planning pregnancy, monitoring your health, or just staying fit and confident.
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Metabolism
BMR Calculator for Women
Calculate your daily calorie burn at rest. Perfect for fitness and weight-loss tracking.
Nutrition
Daily Calorie Calculator (TDEE Tool)
Find out how many calories you need to maintain, lose, or gain weight — based on your activity level.
Hydration
Water Intake Calculator
Discover your ideal daily water intake for healthy hydration and glowing skin.
Cycles
Period Tracker
Predict your next period date using your average cycle length. Easy and reliable menstrual tracker.
Fertility
Ovulation Calculator
Track your fertile days and ovulation window to plan or prevent pregnancy naturally.
Pregnancy
Pregnancy Due Date Calculator
Estimate your baby’s due date instantly using your last period date (LMP).
Pregnancy
Pregnancy Week Tracker
Find out how many weeks pregnant you are and track baby growth week-by-week.
Targets
Ideal Weight Calculator for Women
Know your ideal body weight based on height, age, and BMI. Great for fitness goals.
Composition
Body Fat Percentage Calculator
Measure your body fat % using the US Navy method for accurate health insights.
Ratios
Waist-to-Hip Ratio Calculator
Check your waist-to-hip ratio to assess health risks and body shape balance.
Ratios
Waist-to-Height Ratio Calculator
Calculate your waist-to-height ratio to evaluate obesity and heart-health status.
Postpartum
Breastfeeding Calorie Calculator
Find your extra daily calorie needs during breastfeeding for proper nutrition.
Pregnancy
Pregnancy Weight Gain Calculator
Track your healthy weight gain range during pregnancy based on your BMI.
Micronutrients
Calcium Intake Calculator for Women
Know how much calcium you need daily for stronger bones and better wellness.
About TrendingsUSA — Free BMI, Ovulation & Pregnancy Calculators for Women
Welcome to TrendingsUSA.com, your trusted destination for free women’s health calculators and wellness tools. We believe that every woman deserves easy access to accurate, science-based resources to monitor her health — anytime, anywhere. From understanding your BMI (Body Mass Index) and BMR (Basal Metabolic Rate) to tracking ovulation, pregnancy weeks, and daily calorie needs, our tools are designed to make women’s health tracking simple, fast, and reliable. Each calculator is created using proven formulas and expert references, ensuring results you can trust. Our mission is to help women stay informed, stay confident, and stay healthy. Whether you’re planning a pregnancy, managing your diet, checking hydration levels, or calculating your fitness goals, TrendingsUSA provides everything you need — all in one place. We continuously update our platform with new women’s health tools, such as the Pregnancy Due Date Calculator, Ovulation Tracker, Water Intake Calculator, and Ideal Weight Calculator, so you can make smarter choices every day. At TrendingsUSA, we don’t just offer numbers — we offer knowledge, empowerment, and confidence. Join thousands of women who rely on our tools to live healthier, happier lives. Because when you understand your body better, you can take control of your wellness journey with clarity and strength.
Privacy-First by Design
Your data stays private. All inputs are processed locally — no signups, no tracking, complete privacy.
Evidence-Based Accuracy
All results are based on verified medical formulas and research-backed references for better trust.
Fast, Lightweight Experience
Optimized for speed and mobile performance — every calculator loads instantly even on slow networks.
Our Mission — Smart Health Tools for Women
At TrendingsUSA.com, we empower women with free online health calculators and pregnancy tracking tools to make wellness simple and accessible. Use our BMI Calculator, BMR Calculator, and Pregnancy Calculator to understand your body better — fast, free, and accurate.
Discover more tools like the Ovulation Tracker, Daily Calorie Calculator, Water Intake Calculator, and Pregnancy Week Tracker — designed for women who want to plan pregnancy, stay fit, and track health with confidence.
Trusted worldwide, TrendingsUSA offers accurate, mobile-friendly calculators that make women’s health tracking simple, empowering, and transparent. Your wellness journey begins here — accurate, fast, and always free.
What Users Say
“The calculators are so straightforward. I used the ovulation window and hydration tools and finally feel confident about my routine.” — Emily Carter
“Beautiful interface and quick results. The pregnancy due date and week calculators helped me plan appointments without stress.” — Sophia Nguyen
“I appreciate the privacy-first approach. No clutter, no pop-ups—just reliable numbers I can understand at a glance.” — Hannah Brooks
“Ideal for busy mornings. I check TDEE and water intake in seconds and adjust my day accordingly.” — Olivia Turner
“Clear guidance and friendly design. The body-fat and ratio tools gave me context I couldn’t get from a scale alone.” — Chloe Martin
“Everything is organized perfectly. It feels trustworthy, quick, and very practical for everyday health choices.” — Ava Thompson
“The calculators are so straightforward. I used the ovulation window and hydration tools and finally feel confident about my routine.” — Emily Carter
“Beautiful interface and quick results. The pregnancy due date and week calculators helped me plan appointments without stress.” — Sophia Nguyen
“I appreciate the privacy-first approach. No clutter, no pop-ups—just reliable numbers I can understand at a glance.” — Hannah Brooks
“Ideal for busy mornings. I check TDEE and water intake in seconds and adjust my day accordingly.” — Olivia Turner
“Clear guidance and friendly design. The body-fat and ratio tools gave me context I couldn’t get from a scale alone.” — Chloe Martin
“Everything is organized perfectly. It feels trustworthy, quick, and very practical for everyday health choices.” — Ava Thompson
Best Free Women’s Health & Pregnancy Calculators Online 2025
Explore TrendingsUSA.com — the best hub for women’s health calculators and pregnancy tracking tools online. Each calculator below is designed for accuracy, simplicity, and better health awareness.
BMI Calculator for Women
Check your Body Mass Index (BMI) to know if you’re underweight, healthy, or overweight. Our free BMI calculator for women helps you track your ideal body weight and fitness goals.
BMR Calculator for Women
Calculate how many calories your body burns at rest with our BMR calculator. Perfect for women managing their daily calorie needs or planning weight loss effectively.
Daily Calorie Calculator
Find out how many calories you need daily using our calorie calculator for women. Plan your meals smartly to maintain, lose, or gain weight safely.
Ovulation Calculator
Track your fertile days with our accurate ovulation tracker. Designed for women planning or preventing pregnancy naturally.
Pregnancy Calculator
Estimate your pregnancy due date using our pregnancy calculator online. Based on your last menstrual period (LMP), get instant, accurate results.
Pregnancy Week Tracker
Use the pregnancy week calculator to find out how far along you are and track your baby’s growth week by week.
Water Intake Calculator
Stay hydrated daily with our water intake calculator. Find your ideal water requirement based on body weight and activity level.
Ideal Weight Calculator for Women
Discover your ideal body weight using our advanced formula. This tool helps women set realistic fitness and wellness goals.
Body Fat Percentage Calculator
Check your body fat percentage accurately with our US Navy method calculator. Perfect for fitness tracking and body composition analysis.
Pregnancy Weight Gain Calculator
Track your healthy pregnancy weight gain based on your BMI. Maintain balance and ensure your baby’s well-being.
Breastfeeding Calorie Calculator
Know your extra calorie needs while breastfeeding. Our tool helps new mothers maintain proper nutrition for both mom and baby.
Waist-to-Hip Ratio Calculator
Find your waist-to-hip ratio to measure body fat distribution and heart health risk. Quick and easy to use online.
Waist-to-Height Ratio Calculator
Calculate your waist-to-height ratio to assess obesity and fitness level. Great for tracking overall wellness.
Calcium Intake Calculator
Check your daily calcium intake needs with our free calculator. Essential for stronger bones and overall women’s wellness.
Blog Categories
At TrendingsUSA.com, we not only provide free health calculators but also share valuable insights through our women’s health blog. Our articles cover trending topics like how to track your periods online, pregnancy due date calculation, understanding PCOS symptoms, and healthy lifestyle tips for women. Each blog is written to give you practical health awareness backed with information, and links you directly to the right tool — so you can read, learn, and calculate all in one place.
Privacy Policy
1. Overview
USA Health Tools respects your privacy. Our calculators run in your browser. We do not collect, store, sell, or share personal data.
2. Data Processing
- Inputs stay local: Height, weight, dates, and other values are processed on-device and are not sent to our server.
- No account needed: We do not require login, email, or phone number to use calculators.
3. Cookies & Analytics
By default we do not set tracking cookies. If we enable basic, privacy-friendly analytics in future, we will update this page.
4. Advertising
We follow AdSense policies: clear content, limited ads, no intrusive interstitials, and a good user experience across devices.
5. Third-Party Links
External links (e.g., blog) open in a new tab. Their privacy practices may differ; please review their policies.
6. Contact
Questions? Email us at info@trendingsusa.com.
Medical Disclaimer
All tools on USA Health Tools are for informational and educational purposes only. They are not a substitute for professional medical advice, diagnosis, or treatment.
- Do not rely on these tools for urgent or emergency situations—seek immediate care.
- Always consult your physician or qualified health provider with questions about a medical condition.
- Calculation results are estimates based on standard formulas and typical assumptions.
- Fertility/ovulation tools are not contraception and must not be used to prevent pregnancy.
By using this site, you agree that USA Health Tools is not responsible for actions taken based on the information provided here.
Contact Us
BMI — Body Mass Index
Adult categories: Underweight <18.5 · Normal 18.5–24.9 · Overweight 25–29.9 · Obesity ≥30.
BMR — Mifflin-St Jeor (Female)
Formula (female): 10×kg + 6.25×cm − 5×age − 161.
TDEE / Daily Calorie Needs
Daily Water Intake
Rule of thumb: ~33–35 mL per kg. Needs vary by climate & activity.
Next Period Estimator
Ovulation Window
Pregnancy Due Date (from LMP)
Naegele’s rule: due date ≈ LMP + 280 days (40 weeks).
Pregnancy Week (from LMP)
Ideal Weight (Devine • Female)
Body Fat % — US Navy (Female)
Approximation only. Measure snug, not tight.
Waist-to-Hip Ratio
Waist-to-Height Ratio
Breastfeeding Calories
Typical extra needs ≈ 330 kcal/day (0–6 mo) or 400 kcal/day (7–12 mo), if body weight stable.
Pregnancy Weight Gain Range
Based on IOM guidelines (singleton pregnancy). Always follow your clinician’s advice.
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