Everyday money 5
Tip CalculatorThe tip, the total and what each person owes, with an even split and optional round-up.
Sales TaxAdd tax to a price or strip it back out, at any rate.
Percentage ChangeIncrease or decrease between two values, as a percentage and an absolute figure.
Salary to HourlyAn annual salary converted to hourly, daily, weekly and monthly pay.
DiscountSale price and total savings from an original price and one or two stacked discounts.
Borrowing & saving 7
These produce a schedule as well as a figure — the year-by-year table is usually more useful than the headline number.
MortgageRepayment, total interest paid and a full amortisation schedule.
Compound InterestGrowth over time with regular contributions, charted year by year.
Simple InterestInterest on a principal with no compounding — the plain version.
Paycheck (US)Take-home pay after federal tax, Social Security and Medicare — Australia has its own page.
Paycheck (Australia)PAYG tax, the Medicare Levy and HECS/HELP, with superannuation shown on top of your salary rather than deducted from it.
Auto LoanMonthly payment, total interest and a full amortization schedule for a vehicle loan.
Debt PayoffMonth-by-month payoff schedule across up to five debts, avalanche or snowball.
Running a business 4
Retirement 2
Project a retirement balance under the US 401(k) system or Australia's superannuation system — pick the page that matches your country.