FPSPOT

Browser calculators for calendar age, decimals, advertising and financial formulas.

• Chronological Age Calculator

  Find calendar years, months and days on a chosen reference date.

• Age Difference Calculator

  Compare two birth dates in either order.

• Dog & Cat Age Calculator

  Estimate human-equivalent age for cats and medium-sized dogs.

• Age Tools

  Choose between age gap, calendar age and pet age.

• Rounding Calculator

  Round exact decimal numbers to a selected place.

• CPM Calculator

  Calculate campaign cost per 1,000 impressions.

• Financial Calculators

  Calculate NPV and gross rental yield, or use the IRR calculator.

• Percentage Calculator

  Calculate percentage difference, marks or discount.

• IRR Calculator

  Solve periodic cash flows with multiple-root and domain handling.