Blog

Gas Mileage Calculator Enter Distance (miles): Enter Gas Used (gallons): Result: Calculate Clear var distance = parseFloat(distanceInput.value); var gas = parseFloat(gasInput.value); if (isNaN(distance) || isNaN(gas) || gas === 0) { mileageOutput.value = ‘Please enter valid numbers.’; return; } var mileage = (distance / gas).toFixed(2); mileageOutput.value = mileage + ‘ miles per gallon’; } function clearInputs() … Read more

Leap Year Calculator Enter Year: Check Clear if (isNaN(yearValue)) { resultOutput.textContent = ‘Please enter a valid year.’; return; } if ((yearValue % 4 == 0 && yearValue % 100 != 0) || (yearValue % 400 == 0)) { resultOutput.textContent = yearValue + ‘ is a leap year.’; } else { resultOutput.textContent = yearValue + ‘ … Read more

Currency Converter Enter Amount: From Currency: USDEURGBP To Currency: USDEURGBP Converted Amount: Convert if (isNaN(amount)) { convertedOutput.value = ‘Please enter a valid number.’; return; } // You need to have an API for currency conversion. // Here, I’m just displaying a placeholder message. // You should replace this with actual API calls. var conversionRate = … Read more

Mortgage Calculator Loan Amount ($): Annual Interest Rate (%): Loan Term (years): Monthly Payment: Calculate Reset var loanAmount = parseFloat(loanAmountInput.value); var interestRate = parseFloat(interestRateInput.value) / 100 / 12; // Monthly interest rate var loanTerm = parseFloat(loanTermInput.value) * 12; // Monthly term in months if (isNaN(loanAmount) || isNaN(interestRate) || isNaN(loanTerm)) { monthlyPaymentOutput.value = ‘Please enter valid … Read more

Retirement Savings Calculator Initial Savings ($): Monthly Contribution ($): Annual Interest Rate (%): Years: Calculate var futureValue = initialAmount; for (var i = 0; i < years; i++) { futureValue += monthlyContribution * 12; futureValue *= (1 + annualInterestRate); } var resultElement = document.getElementById(‘result’); resultElement.innerText = “After ” + years + ” years, your retirement … Read more

Body Fat Calculator Enter Weight (in kg): Enter Height (in cm): Enter Age: Calculate Reset var weight = parseFloat(weightInput.value); var height = parseFloat(heightInput.value) / 100; // Convert cm to meters var age = parseFloat(ageInput.value); if (isNaN(weight) || isNaN(height) || isNaN(age)) { resultOutput.textContent = ‘Please enter valid numbers for weight, height, and age.’; return; } var … Read more

Age Calculator Enter Your Birthdate: Your Age: Calculate Reset if (monthDiff < 0 || (monthDiff === 0 && today.getDate() < birthDate.getDate())) { age–; } ageOutput.value = age; } function resetFields() { var birthDateInput = document.getElementById(‘birthDate’); var ageOutput = document.getElementById(‘ageOutput’); birthDateInput.value = ”; ageOutput.value = ”; } Age Calculator: A Handy Tool for Personal and Professional … Read more

Pregnancy Due Date Calculator Enter the Date of Last Menstrual Period: Estimated Due Date: Calculate Clear if (isNaN(lastPeriodDate.getTime())) { dueDateOutput.value = ‘Please enter a valid date.’; return; } var estimatedDueDate = new Date(lastPeriodDate.getTime() + 280 * 24 * 60 * 60 * 1000); var formattedDueDate = estimatedDueDate.toDateString(); dueDateOutput.value = formattedDueDate; } function clearInputs() { var … Read more

Calorie Calculator Enter Calories: Calories Burned During Activity: Calculate if (isNaN(caloriesValue)) { activityOutput.value = ‘Please enter a valid number.’; return; } // You need to define the MET value for the specific activity you’re calculating for. // Replace the following line with the appropriate MET value. var metValue = 1.0; var caloriesBurned = (caloriesValue * … Read more

Loan EMI Calculator Principal Amount (₹): Annual Interest Rate (%): Loan Tenure (Years): Monthly EMI: Calculate var principal = parseFloat(principalInput.value); var annualRate = parseFloat(rateInput.value); var tenureYears = parseFloat(timeInput.value); if (isNaN(principal) || isNaN(annualRate) || isNaN(tenureYears)) { emiOutput.value = ‘Please enter valid numbers.’; return; } var monthlyRate = annualRate / 12 / 100; var numberOfMonths = tenureYears … Read more