About Us
Your trusted daily health companion
Our Story
Daily Health Toolkit was launched in 2026 with a simple mission: make essential health calculations accessible to everyone, completely free. No sign-ups required, no hidden fees, no data selling — just reliable health information when you need it.
The idea came from a simple observation: most health calculators online are either outdated, cluttered with ads, require account creation, or charge for basic features. We wanted a clean, fast, and private alternative that puts your health data first — literally in your own hands.
Today, we serve users across the globe with 32+ free calculators spanning nutrition, fitness, body composition, cardiovascular health, women's health, and more. Our tools are used by fitness enthusiasts, people managing their weight, healthcare students, and anyone curious about their body's numbers.
Our Mission
We believe everyone deserves to understand their body's basic needs — how much water to drink, how many calories to eat, how their heart rate zones work, and where they fall on health metrics like BMI, BMR, and body fat percentage. Knowledge is the first step toward better health, and we remove every barrier between you and that knowledge.
Every calculator on our site is built using peer-reviewed medical formulas and authoritative sources: the Mifflin-St Jeor equation for BMR, the WHO BMI classification, the US Navy body fat method, the Karvonen formula for heart rate zones, and many more. We cite every source so you can verify the science behind the numbers.
By the Numbers
What We Offer
- Water Intake Calculator — Personalized daily hydration goal based on your weight and activity level, with kg/lbs support.
- BMR & Calorie Calculator — Uses the Mifflin-St Jeor equation (the gold standard) to estimate your Basal Metabolic Rate and total daily energy expenditure.
- BMI Calculator — Quick body mass index screening with a visual gauge and category breakdown.
- Protein Calculator — Personalized daily protein targets based on your goals and activity level.
- Keto Calculator — Ketogenic diet macro targets with 70/25/5 split.
- Macro Calculator — Protein, carbs, and fat breakdown for any goal.
- Heart Rate Zone Calculator — 5 training zones using the Karvonen formula.
- Body Fat Calculator — US Navy method estimation with visual results.
- Ideal Weight Calculator — 4 validated formulas (Hamwi, Devine, Robinson, Miller).
- Sleep Cycle Calculator — Ideal bedtime based on 90-minute sleep cycles.
- 32+ Total Calculators — Including calorie deficit, VO2 max, blood pressure, cholesterol, diabetes risk, and many more.
- Save & Track — Create a free account to save calculations in your browser and monitor your progress over time.
Why Choose Daily Health Toolkit
There are many health calculators on the web. Here is what makes us different:
- Privacy First — All calculations run entirely in your browser. Your data never touches our servers. We do not sell, share, or monetize your personal information. Period.
- No Paywalls — Every calculator, every feature, every tool is 100% free. No premium tiers, no trial periods, no credit card required. Account creation is optional and only used to save your history locally.
- Scientifically Accurate — We use medically recognized formulas — Mifflin-St Jeor for BMR, standard WHO BMI classification, US Navy body fat method, Karvonen heart rate formula, and more. Every formula is sourced and linked in our methodology page.
- Always Accessible — Dark mode support, responsive design for mobile and desktop, and screen-reader-friendly markup. We believe health tools should work for everyone, everywhere.
- Transparent & Honest — We clearly label our sources, explain our methodologies, and never make exaggerated health claims. Our calculators provide estimates, not diagnoses. We encourage users to consult healthcare professionals for medical advice.
Disclaimer
Daily Health Toolkit provides informational calculations only. Our tools are not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for personalized guidance.