Make the numbers make sense

Estimate a fixed monthly loan payment, total repayment, and total interest from principal, rate, and term.

Estimate a mortgage payment including principal, interest, property tax, home insurance, and monthly HOA dues.

Calculate a loan balance after a chosen number of payments and see principal and interest paid to date.

Project how a starting balance and regular deposits grow with compound interest over time.

Calculate interest that accrues on the original principal only, without compounding.

Find the monthly deposit needed to reach a savings target by a chosen date at a given rate.

Convert an hourly rate into weekly, monthly, and annual pay for any schedule.

Convert an annual salary into an equivalent hourly, daily, and weekly rate.

Estimate net pay for one paycheck from salary, pay frequency, pre-tax deductions, and a withholding rate.

Add sales tax to a purchase amount and see the tax and the total the customer pays.

Add value added tax to a net amount and see the VAT and the gross invoice figure.

Split a displayed price that already includes tax into its base amount and tax portion.

Measure the gain and percentage return on an investment after later contributions.

Calculate the compound annual growth rate between a starting and ending value.

Calculate dividend yield from share price and annual dividend, with income for your position.

Calculate gross profit and margin from revenue and cost, with the equivalent markup.

Set a selling price by adding a markup percentage to unit cost, and see the margin it produces.

Find how many units cover fixed costs at a given price and variable cost.

Convert an amount at the exchange rate you were quoted and read the same quote as an inverse rate.

Measure the margin between the market rate and the rate you were offered.

Turn a daily spending budget into a trip total in home currency and the local currency you will need.