PyQt5 – Beats and Breaths Calculator

In this article we will see how we can create a heart beats and breaths calculator using PyQt5. Below is how the calculator will look like.

A normal resting heart rate for adults ranges from 60 to 100 beats per minute. Generally, a lower heart rate at rest implies more efficient heart function and better cardiovascular fitness. For example, a well-trained athlete might have a normal resting heart rate closer to 40 beats per minute.

Respiratory rate: A person’s respiratory rate is the number of breaths you take per minute. The normal respiration rate for an adult at rest is 12 to 20 breaths per minute. A respiration rate under 12 or over 25 breaths per minute while resting is considered abnormal.

GUI Implementation Steps :
1. Create a heading label that display the calculator name
2. Create label to show user to select the birth date and the birth time
3. Create a QCalendarWidget object for user to select the birth date
4. Create a QTimeEdit object to get the birth time
5. Create a push button to calculate the heart beats and breaths
6. Create a label to show the calculated beats and breaths

Back-End Implementation :
1. Make the calendar future date block i.e set current date as maximum date
2. Add action to the push button
3. Inside the push button action get the date from the calendar and time from the QTimeEdit
4. Get the day, month and year from the date and hour and minute from the time edit
5. Create a datetime object for current date and the birth date
6. Get the difference from both the dates and get the days and seconds
7. Convert days and seconds into minutes
8. Get the heart beats and breaths by multiplying minutes with the average rates.
9. Show the calculated beats and breaths with the help of label

Below is the implementation





# importing libraries
from PyQt5.QtWidgets import * 
from PyQt5 import QtCore, QtGui
from PyQt5.QtGui import * 
from PyQt5.QtCore import * 
import datetime
import sys
class Window(QMainWindow):
    def __init__(self):
        # setting title
        self.setWindowTitle("Python ")
        # width of window
        self.w_width = 400
        # height of window
        self.w_height = 550
        # setting geometry
        self.setGeometry(100, 100, self.w_width, self.w_height)
        # calling method
        # showing all the widgets
    # method for components
    def UiComponents(self):
        # creating head label
        head = QLabel("Beats and Breaths Calculator", self)
        # setting geometry to the head
        head.setGeometry(0, 10, 400, 60)
        # font
        font = QFont('Times', 15)
        # setting font to the head
        # setting alignment of the head
        # setting color effect to the head
        color = QGraphicsColorizeEffect(self)
        # creating a label
        b_label = QLabel("Select Birthday and Time", self)
        # setting properties  label
        b_label.setGeometry(50, 95, 300, 25)
                              "border : 1px solid black;"
                              "background : rgba(70, 70, 70, 25);"
        b_label.setFont(QFont('Times', 9))
        # creating a calendar widget to select the date
        self.calendar = QCalendarWidget(self)
        # setting geometry of the calendar
        self.calendar.setGeometry(50, 120, 300, 180)
        # setting font to the calendar
        self.calendar.setFont(QFont('Times', 6))
        # getting current date
        date = QDate.currentDate()
        # blocking future dates
        # creating a time edit object to receive time
        self.time = QTimeEdit(self)
        # setting properties to the time
        self.time.setGeometry(50, 300, 300, 30)
        self.time.setFont(QFont('Times', 9))
        # creating a push button
        calculate = QPushButton("Calculate", self)
        # setting geometry to the push button
        calculate.setGeometry(125, 360, 150, 40)
        # adding action to the calculate button
        # creating a label to show percentile
        self.result = QLabel(self)
        # setting properties to result label
        self.result.setGeometry(50, 420, 300, 110)
                                  "border : 3px solid black;"
                                  "background : white;"
        self.result.setFont(QFont('Arial', 11))
    def calculate_action(self):
        # getting birth date day
        birth = self.calendar.selectedDate()
        # getting year and month day of birth day
        birth_year = birth.year()
        birth_month = birth.month()
        birth_day =
        # getting time of from the time edit
        time = self.time.time()
        # getting hour and seconds
        hour = time.hour()
        minute = time.minute()
        # getting today date
        current = QDate.currentDate()
        # getting year and month day of current day
        current =
        # coverting  date into date object
        birth_date = datetime.datetime(birth_year, birth_month, birth_day, hour, minute, 0)
        # getting difference in both the dates
        difference = current - birth_date
        # getting difference in days
        days = difference.days
        # setting seconds
        seconds = difference.seconds
        # converting days and seconds into minutes
        minutes = seconds / 60 + days * 24 * 60
        heartbeat = int(minutes * 65)
        breath = int(minutes * 15)
        # setting this value with the help of label
        self.result.setText("You have taken " + str(breath) +
                            ", and your heart has beat " + str(heartbeat) +
                            " times since you were born.")
# create pyqt5 app
App = QApplication(sys.argv)
# create the instance of our Window
window = Window()
# start the app


Output :

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