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Find how much a deposit grows with simple or compound interest.
Project the value of a starting amount plus regular monthly contributions.
Work out the monthly deposit needed to reach a savings goal by a deadline.
Calculate the payment of a fixed-rate loan and see every payment split into principal and interest.
Estimate the monthly cost of a home loan including property tax, insurance and fees.
Find the monthly payment for a car after your down payment and trade-in.
See your balance after the study (grace) period and the monthly repayment afterwards.
Find how many months it takes to clear a balance with a fixed monthly payment, and the interest you pay.
Find the present and future value of equal payments made every period.
Convert a nominal annual rate (APR) to the effective annual yield (APY) and back.
Calculate the value of a fixed-term deposit when it matures.
Price a bond from its coupon, market yield and years to maturity.
Work out the commission on a sale and the total pay with a base salary.
Calculate yearly depreciation and book value with the straight-line or double-declining method.
See the final price after one or two discounts and how much you save.
Calculate dividend yield and the income your shares pay per year and per month.
Estimate your financial-independence number and how many years it may take to reach it.
Add up your monthly income and expenses to see what is left and your savings rate.
See what an amount will cost in the future, and what today’s money will be worth, at a given inflation rate.
Find profit margin and markup from cost and price, or the price for a target margin.
Add what you own and subtract what you owe to get your net worth.
Find how long an investment takes to earn back its cost, with and without discounting.
Estimate monthly cash flow, cap rate and cash-on-cash return for a rental property.
Find a comfortable rent for your income, and compare total rent with mortgage payments over the same years.
Project your savings at retirement and compare them with the amount needed for the income you want.
Calculate the compound annual growth rate between two values, or the internal rate of return of a series of cash flows.
Convert pay between hourly, daily, weekly, monthly and yearly amounts.
Calculate overtime pay, or your new salary after a raise.
Calculate profit, return and break-even price for a stock trade including fees.
Move a single amount through time: its future value, its present value, or the value of a perpetuity.
Work out the tip and split the bill between people.
Estimate ad revenue from impressions and CPM, or find the CPM from revenue.
Calculate NPS from the number of promoters, passives and detractors.
Calculate GDP from consumption, investment, government spending and net exports.
Count cash by entering each note or coin value and how many you have.
Answer the common percentage questions: X% of Y, what percent, percentage change, increase and decrease.
Compare a measured value with the true value and get the absolute and percent error.
Simplify a ratio A : B and scale it to a new size.
Solve A / B = C / x for the missing value (rule of three).
Add, subtract, multiply, divide and simplify fractions, mixed numbers and decimals exactly.
Find the greatest common factor and least common multiple of two or more whole numbers.
Break a whole number into its prime factors and see whether it is prime.
Solve ax² + bx + c = 0, including complex roots, and find the vertex of the parabola.
Convert numbers to Roman numerals and back, with validation of the Roman form.
Write a number in scientific, E and engineering notation, with optional significant figures.
Paste a list of numbers to get the average, median, mode, range, quartiles and standard deviation.
Standardise a value and find its percentile under the normal distribution.
Combine the probabilities of two independent events and convert probability to odds.
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