10 free health calculators for blood pressure, sleep, pregnancy, medication, symptoms, and more. All processing happens locally in your browser.
Monitoring your health metrics helps you make informed decisions and stay on top of your wellbeing. Our free health tools provide practical tracking for blood pressure, sleep cycles, pregnancy milestones, medication schedules, and more — all without any signup or cost. Processing happens locally in your browser for complete privacy.
Understanding your blood pressure readings is essential for heart health. Our blood pressure checker categorises systolic and diastolic readings according to NHS guidelines, with colour-coded results and actionable advice. Regular monitoring can help detect hypertension early — a condition affecting millions of UK adults.
Quality sleep is fundamental to health. Our sleep cycle calculator uses the 90-minute sleep cycle principle to recommend optimal wake-up or bed times for feeling refreshed. Based on research showing that waking at the end of a sleep cycle reduces grogginess, this tool helps you plan your sleep schedule for better rest.
The pregnancy due date calculator estimates delivery date and trimester milestones based on the first day of your last menstrual period (Naegele's rule). Our menstrual cycle tracker predicts next period dates, identifies fertile windows, and tracks cycle phases (menstrual, follicular, ovulation, luteal) — helpful for family planning or understanding your body's patterns.
The medication tracker helps you manage daily doses with checklist functionality. Our symptom checker provides possible causes for common symptoms and guidance on when to seek medical attention. The alcohol unit calculator tracks UK alcohol units against NHS low-risk guidelines (14 units per week). The smoking cost calculator shows your spending and potential savings from quitting. The hydration tracker logs daily water intake, and the vision screener provides basic at-home eye tests.
Important note: These tools are for informational and tracking purposes only. They are not a substitute for professional medical advice, diagnosis, or treatment. Always consult a healthcare professional for medical concerns.
Check your blood pressure reading against NHS categories with colour-coded results.
Find the best times to wake up or go to bed based on 90-minute sleep cycles.
Calculate your estimated due date and trimester milestones from last period.
Track daily medication doses with a simple checklist and schedule builder.
Match common symptoms to possible causes with NHS guidance links.
Track period dates, predict next cycle, and identify fertile window.
Calculate UK alcohol units from drinks and check against weekly guidelines.
See how much smoking costs you and what you could save by quitting.
Log daily water intake and track progress toward your hydration goal.
Simple at-home vision tests: Snellen chart simulation and colour blindness check.