Money & finance
Money & finance: 14 free calculators & tools, including Currency conversion and Precious-metal conversion. Explore formulas, examples and visual explanations.
Currency conversion
Turn a foreign price into something familiar.
Precious-metal conversion
Estimate gold, silver, platinum or palladium value from its weight.
Discount calculator
Apply successive discounts and a fixed coupon to compare the final price and savings.
Sales tax and VAT
Add or extract tax using the rate you supply, with net, tax and gross amounts.
Tip and bill split
Calculate a tip and divide the total bill into currency amounts that add up exactly.
Unit price comparison
Compare packages of different sizes using a common unit for mass, volume, length or quantity.
Compound interest
Model balance growth with a constant rate, regular deposits and a chosen compounding frequency.
Loan repayment
Estimate monthly payments, interest and payoff time, including optional extra payments.
Savings goal
Find the monthly deposit needed to reach a target balance under your entered assumptions.
Debt payoff estimator
Compare repayment time with extra payments and identify balances that cannot be paid off in this model.
Inflation and purchasing power
Compare money values between two price-index levels that you provide.
Cashback and reward value
Estimate cashback or point value after the fee attributable to your purchase.
Shared-expense settlement
Reconcile group expenses and unequal shares, then see who pays whom.
Rent versus buy equipment
Compare ownership and rental costs for a chosen number of uses and find the break-even point.