1. What is an Average Blood Pressure Calculator?

Definition: This calculator computes your average blood pressure based on multiple readings taken over time, following UK health guidelines.

Purpose: It helps individuals monitor their blood pressure trends and identify potential hypertension risks.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• Systolic — The higher number (pressure when heart beats)
• Diastolic — The lower number (pressure between beats)
• Number of Readings — Typically 7 days for home monitoring

Explanation: The calculator averages your systolic and diastolic readings separately to give a more accurate picture than single measurements.

3. Importance of Average BP Calculation

Details: NHS recommends home monitoring over 7 days to diagnose hypertension, as single readings can be misleading due to natural variations.

4. Using the Calculator

Tips:

• Take readings at the same time each day (morning and evening)
• Sit quietly for 5 minutes before measuring
• Use a validated upper arm monitor
• Record 7-14 days of readings for best accuracy

5. Frequently Asked Questions (FAQ)

Q1: How many readings should I enter?
A: NHS recommends 7 days of home monitoring (twice daily), but you can enter 1-14 days of readings.

Q2: What's a normal blood pressure range in the UK?
A: Normal is below 120/80 mmHg. Pre-high is 120-140/80-90. High is 140+/90+ mmHg.

Q3: When should I see a doctor?
A: If your average is consistently 135/85 mmHg or higher at home (equivalent to 140/90 in clinic).

Q4: Why are home readings lower than clinic readings?
A: "White coat hypertension" can elevate readings in clinical settings. Home monitoring often gives more accurate baselines.

Q5: How accurate is this calculator?
A: It provides mathematical averages, but always consult your GP for medical interpretation of results.