This website contains online computational modules dealing with various subjects such as loudness/noise pollution, saving money, investing, and health.

Health

• Average vitamin B12 dose
• Safe Chloroquine and Hydroxychloroquine (Plaquenil) dose
• Conception date from the birth date
• Pregnancy dates
• Expected height of a child
• Outlive/predecease probability calculator, with both life expectancies in several cases
• Life expectancy and mortality risk calculator
• Physical Activity Level: measure your physical activity
• Metabolism
• Convert power glasses to contact lens power and vice versa
• Reading glasses lens power
• Adding sound levels
• Sound level at a different distance
• Squint angle from the prism power and vice versa

Saving money

• Saving for an amount: number of months or height of the deposits
• Accrued interest: check the interest paid
• Nominal interest rate from the effective rate
• Effective interest with transaction costs
• Effective interest rate from the nominal interest rate
• Totals of savings subject to tax

Pension, borrowing

• Annuity calculator with indexed terms
• Borrowing money: comparing repayment schemes

Investing

• Compute either the share price, or the amount or the number of shares given the other two and the transaction costs
• Totals and combined ROI of a portfolio of different investments
• ROI investment with intermediate deposits and draws
• Bond calculator: yield to maturity or value
• Real costs of a fund
• ROI of an equity investment
• Trading Simulator: follow your investments and their returns in time
• Profit and ROI of a share transaction in a different currency

Enterprise

• VAT/Sales tax calculator
• Inflation and price increase calculator
• Expected profit of a small company

Traffic

• Personal Injury calculator
• Variable costs of your car, motor bike or scooter
• Compute the fuel costs needed for driving a given distance

Free time

• Calendar with holidays
• Estimate the costs of a vacation
• Estimate the costs of a party
• Microwave calculator
• Area and volume of a house
• Estimate house moving costs
• Mortality risk and life expectancy of your pet

And also

• Overview of all ROI calculators
• Examples for the financial calculators
• Transform CSV data to an HTML table
• Compute the sums of the rows or columns of an HTML table