Calculators

Calculators

Planning tools related to money & business literacy, with visible assumptions and clearly explained results.

Calculators November 9, 2026

Annualized Return Calculator

Calculate the compound annualized return from an investment's starting value, ending value, and holding period. The result is a mathematical estimate before fees, taxes, inflation, or cash flows.

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Calculators November 9, 2026

Average Purchase Price Calculator

Calculate the weighted average price per unit across two purchases using the quantities and prices you enter. The result excludes fees, taxes, and other costs unless you include them in the entered prices.

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Calculators November 9, 2026

Monthly Budget Balance Calculator

Estimate the money left in a monthly budget after planned expenses by subtracting total monthly expenses from monthly take-home income. This simple worksheet-style estimate assumes all amounts use the same currency and cover the same month.

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Calculators November 9, 2026

Commission Calculator

Estimate commission earnings from a sale amount and commission rate, with an optional fixed base payment and a share adjustment for split commissions.

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Calculators November 9, 2026

Compound Interest Calculator

Estimate an account's future balance from an initial deposit, regular contributions, an annual interest rate, compounding frequency, and investment period. This simplified estimate assumes a constant rate and contributions made at the end of each month.

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Calculators November 9, 2026

Credit Card Interest Cost Calculator

Estimate simple interest on a credit card balance over a chosen number of months using the entered annual percentage rate. This worksheet assumes the balance stays constant and does not include payments, new purchases, fees, or compounding.

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Calculators November 9, 2026

Customer Lifetime Value Calculator

Estimate gross-profit customer lifetime value from average monthly revenue, gross margin, and expected customer lifespan. This simplified model assumes revenue and margin remain constant over the stated lifespan.

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Calculators November 9, 2026

Debt Repayment Amount Calculator

Estimate the total amount paid toward debt by multiplying a monthly payment by the number of months. This simple estimate does not account for interest, fees, or changes in payment amount.

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Calculators November 9, 2026

Debt-to-Income Ratio Calculator

Estimate your debt-to-income (DTI) ratio by comparing your monthly debt payments with your gross monthly income. Enter amounts for the same month. This is a budgeting estimate and does not predict loan approval.

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Calculators November 9, 2026

Dividend Reinvestment Growth Calculator

Estimate how a dividend investment may grow when dividends are reinvested, using a simplified annual compounding model. Enter your starting balance, annual dividend yield, annual share-price growth, investment period, and annual contribution. The estimate assumes the inputs remain constant and excludes taxes, fees, and fractional-share restrictions.

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Calculators November 9, 2026

Effective Tax Rate Calculator

Estimate an effective tax rate by dividing the tax amount entered by the income amount entered. This simple calculation does not account for tax rules, deductions, credits, or filing circumstances.

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Calculators November 9, 2026

Emergency Fund Target Calculator

Estimate an emergency savings target by multiplying your monthly essential expenses by the number of months you choose to cover. This is a user-selected arithmetic target, not individualized financial guidance.

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Calculators November 9, 2026

Future Value Calculator

Estimate the future value of savings with monthly contributions and an assumed annual return compounded monthly. The estimate excludes taxes, fees, and inflation.

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Calculators November 9, 2026

Home Closing Cost Budget Calculator

Add user-entered title, inspection, appraisal, and other fees to estimate a simple home closing fee budget in USD. This estimate includes only the amounts entered and does not determine a complete closing disclosure or every cost of buying a home.

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Calculators November 9, 2026

Hourly to Salary Calculator

Estimate gross annual salary from an hourly wage and typical paid work hours. Enter your rate, weekly hours, and paid work weeks to calculate an annualized amount before taxes and deductions.

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Calculators November 9, 2026

Income Quintile Share Calculator

Calculate the percentage of total income represented by one income group using the same currency and time period for both amounts. This simple share does not determine quintile boundaries or compare a population with published statistical data.

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Calculators November 9, 2026

Inflation Calculator

Estimate how the purchasing-power equivalent of an amount changes over time at a constant annual inflation rate. Enter an amount, an annual rate, and a number of years.

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Calculators November 9, 2026

Investment Growth Calculator

Project an investment balance over time using an assumed annual return, regular monthly contributions, and monthly compounding. This is a mathematical illustration, not a forecast or investment advice.

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Calculators November 9, 2026

Investment Return Calculator

Estimate the ending value and total return of a one-time investment using an assumed annual return compounded over a chosen period. This simplified estimate excludes taxes, fees, inflation, and additional contributions.

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Calculators November 9, 2026

Markup and Selling Price Calculator

Calculate a selling price and gross profit from a product's unit cost and target markup percentage. The calculation applies markup to cost and does not account for operating expenses, taxes, or fees.

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Calculators November 9, 2026

Monthly Work Hours Calculator

Calculate scheduled work hours for a month by multiplying the number of workdays by hours worked per day. This simple estimate does not account for holidays, leave, overtime, or varying daily schedules.

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Calculators November 9, 2026

Net Profit Calculator

Estimate net profit and net profit margin for a business period from revenue and the costs entered. This simplified model subtracts cost of goods sold, operating expenses, interest, and taxes from revenue.

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Calculators November 9, 2026

Net Worth Calculator

Estimate your net worth by adding the values of your assets and subtracting your debts. Enter amounts in one currency and use consistent, current estimates.

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Calculators November 9, 2026

Pay Raise Calculator

Estimate your new annual gross pay and the increase from a raise percentage using your current annual gross salary. Results are before taxes, deductions, and other compensation changes.

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Calculators November 9, 2026

Portfolio Return Calculator

Estimate a portfolio's total return over a holding period from its starting value, ending value, cash contributions, and cash withdrawals. This simple calculation treats flows as if they occurred at the end of the period and does not account for timing, fees, taxes, or inflation.

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Calculators November 9, 2026

Present Value Calculator

Estimate the value today of a future cash amount using an annual discount rate and a compounding period. This calculation assumes one future payment, a constant rate, and matching annual periods.

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Calculators November 9, 2026

Profit Margin Calculator

Calculate gross profit and gross profit margin from revenue and cost of goods sold. This simple model excludes operating expenses, taxes, interest, and other costs outside cost of goods sold.

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Calculators November 9, 2026

Retirement Contribution Total Calculator

Estimate the total amount contributed through regular monthly deposits over a chosen number of months. This simple estimate adds contributions only and does not include investment growth, fees, taxes, or employer contributions.

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Calculators November 9, 2026

Rule of 72 Calculator

Estimate how many years an investment may take to double by dividing 72 by its annual rate of return. This is a simplified estimate and does not account for taxes, fees, or changing returns.

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Calculators November 9, 2026

Sales Tax Calculator

Estimate sales tax and the total price from a taxable purchase amount and a tax rate you provide. This arithmetic tool does not determine which tax rules apply to a transaction.

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Calculators November 9, 2026

Savings Goal Calculator

Estimate the monthly amount to set aside to reach a savings goal by a target date. This simple planning worksheet assumes regular monthly deposits, no starting balance, and no interest or investment growth.

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Calculators November 9, 2026

Savings Interest Calculator

Estimate simple interest earned on savings from an opening balance, annual interest rate, and time period. This estimate assumes the rate and balance stay constant and does not include compounding, taxes, fees, or additional deposits.

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Calculators November 9, 2026

SBA Loan Monthly Payment Calculator

Estimate the monthly principal and interest payment for a fully amortizing loan using the amount borrowed, annual interest rate, and repayment term. This worksheet does not determine SBA eligibility, approval, or final loan terms.

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Calculators November 9, 2026

Simple Interest Calculator

Calculate the simple interest and total balance on a principal amount over a stated time period using an annual interest rate. This estimate assumes the rate stays constant and interest is not compounded.

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Calculators November 9, 2026

Stock Profit Calculator

Estimate the gross profit or loss from a stock sale after entering your purchase price, sale price, share quantity, and total trading fees. The calculation excludes taxes and other costs not entered.

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Calculators November 9, 2026

Time Value of Money Calculator

Estimate the future value of a present amount or the present value of a future amount using an assumed annual rate, compounding frequency, and number of years. This calculator uses a fixed-rate model and does not account for taxes, fees, inflation, or changing returns.

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