Clarity21 FREE TOOLS
Finance, made clearer.
Explore savings and borrowing, estimate gross pay, and check prices, tips and bill splits.
Tools in this category
Simple Interest Calculator
Find interest earned on a fixed principal without compounding.
Tip Calculator
Calculate a tip and split the total evenly between people.
Hourly to Salary Calculator
Estimate annual gross pay from hourly rate, weekly hours and paid weeks.
Compound Interest Calculator
See how your starting balance and regular contributions could grow with monthly compounding.
Mortgage Calculator
Estimate monthly principal and interest payments and see your balance fall over time.
Discount Calculator
Find a sale price and exactly how much you save before taxes or fees.
Savings Goal Calculator
Find the whole months needed to reach a target with a fixed monthly contribution.
Rule of 72 Calculator
Approximate the years needed to double a balance at a constant positive annual rate.
Effective Annual Rate Calculator
Convert a nominal annual interest rate into an effective rate with periodic compounding.
Real Return Calculator
Adjust a nominal percentage return for inflation over the same period.
Purchasing Power Calculator
Express a future nominal amount in starting-year money using an assumed constant inflation rate.
Debt-to-Income Calculator
Express monthly debt payments as a percentage of monthly gross income.
Unit Price Calculator
Compare package value by calculating cost per one unit of quantity.
Sales Tax Calculator
Add a supplied tax rate to a price or extract tax from an inclusive total.
Currency Converter
Convert an amount between 20 currencies using the latest available ECB reference rate.
Historical Currency Converter
Convert a past amount using an exchange rate for a selected historical date.
Currency Exchange Fee Calculator
Estimate the amount received after a percentage fee and a fixed fee in the source currency.
Foreign Price Comparison Calculator
Compare two prices listed in different currencies using a common reference rate.
Savings Rate Calculator
Find the percentage of your take-home income left after spending over the same period.
Emergency Fund Calculator
Estimate a cash reserve for a chosen number of months of essential expenses.
Debt Payoff Calculator
Estimate how many monthly payments will repay one balance at a fixed annual rate.
Choosing the right finance tool
Start with the compound interest calculator to explore a savings scenario, or use the mortgage calculator for principal and interest payments. Borrowing and savings estimates state their assumptions. Currency tools request daily ECB reference rates only when you select Calculate.