Accounts Receivable Days Calculator
Use your own inputs to calculate the result for accounts receivable days.
6 min read Read article
Calculators
Calculators
Planning tools related to business learning, with visible assumptions and clearly explained results.
At Least One Success Binomial Probability Calculator
Calculate the probability of at least one success across a fixed number of independent trials, using the same success probability for every trial.
6 min read Read article
Break-Even Units Calculator
Estimate the number of units a business must sell to cover fixed costs using fixed costs and contribution per unit. This simple model assumes one product, a constant selling price and variable cost per unit, and no capacity limits.
6 min read Read article
Monthly Net Burn Rate Calculator
Calculate monthly net burn by subtracting cash inflows from cash outflows for one month. A negative result indicates net cash generation.
6 min read Read article
Business Equipment Payback Calculator
Estimate how many months of stated monthly savings are needed to equal an equipment purchase cost. This simple payback estimate assumes savings remain constant and excludes financing, taxes, maintenance, downtime, and other costs.
6 min read Read article
Business Reorder Quantity Calculator
Estimate the units to reorder by multiplying average daily sales by supplier lead time. This simple estimate assumes demand stays steady and does not include safety stock, existing inventory, or order constraints.
6 min read Read article
Cash Flow Calculator
Estimate net cash flow for a chosen period by subtracting total cash outflows from total cash inflows. This simple worksheet uses the amounts you enter and does not forecast timing or future balances.
5 min read Read article
Commission Calculator
Estimate sales commission from a transaction amount, commission rate, and any additional fixed bonus. This simple model assumes one flat rate applies to the full amount.
5 min read Read article
Confidence Interval Calculator
Calculate a two-sided confidence interval for a population mean using a sample mean, sample standard deviation, sample size, and a supplied z critical value. This normal-based estimate assumes independent observations and a suitable sampling distribution.
5 min read Read article
Contribution Margin Calculator
Calculate contribution margin per unit and contribution margin ratio from selling price and variable cost per unit.
6 min read Read article
Cost of Goods Sold Calculator
Calculate the cost of goods sold for a period using beginning inventory, purchases, and ending inventory. Enter all amounts in the same currency and apply the standard inventory equation.
5 min read Read article
Customer Lifetime Value Calculator
Estimate revenue-based customer lifetime value by multiplying average revenue per customer per month by the expected customer relationship in months. This simple model does not subtract acquisition, service, or other costs.
5 min read Read article
Discount Rate Calculator
Calculate the implied annual discount rate from a present value, future value, and term in years using compound growth. The result is a mathematical estimate based only on the values entered.
5 min read Read article
EBITDA Calculator
Estimate EBITDA by adding depreciation and amortization to operating profit. Enter all amounts in the same currency and reporting period.
5 min read Read article
Effective Tax Rate Calculator
Estimate an effective tax rate from the total tax amount and income you enter. This simple ratio does not apply tax laws, deductions, credits, or filing rules.
5 min read Read article
Employee Cost Calculator
Estimate an employee’s annual employer cost by combining gross annual pay, employer payroll burden, benefits, and other annual employment costs. This is a planning estimate based on the amounts you enter.
5 min read Read article
Equipment Depreciation Calculator
Estimate annual and cumulative equipment depreciation using the straight-line method. Enter purchase cost, expected salvage value, useful life, and the number of years held to calculate the annual depreciation amount and accumulated depreciation to date.
5 min read Read article
Expected Value Calculator
Estimate the probability-weighted average value of a decision's possible outcomes. Enter each outcome's value and its probability. Any probability not assigned to a listed outcome is treated as a zero-value outcome.
6 min read Read article
Freelancer Hourly Rate Calculator
Estimate a target hourly rate from annual income goals, billable hours, annual business expenses, and a reserve for taxes and unpaid time. This is a planning estimate based on the figures you provide.
5 min read Read article
Annual Inventory Carrying Cost Calculator
Estimate annual inventory carrying cost by applying a user-entered carrying-cost rate to average inventory value. The model assumes the rate combines storage, insurance, handling, obsolescence, and related holding costs.
6 min read Read article
Inventory Turnover Calculator
Calculate inventory turnover by dividing cost of goods sold for a period by average inventory, based on beginning and ending inventory values.
6 min read Read article
Fixed-Rate Loan Amortization Calculator
Estimate a fixed-rate loan's monthly payment and total interest from the principal, annual interest rate, and term. This estimate excludes fees and a full payment schedule.
6 min read Read article
Markup Price Calculator
Calculate a selling price and gross profit from an item's cost and markup percentage. The calculation applies markup to cost and does not account for taxes, fees, discounts, or overhead.
5 min read Read article
Net Present Value Calculator
Estimate a project's net present value by discounting up to five annual cash flows at a user-supplied rate and subtracting the initial investment. Enter zero for any unused year. This simplified model assumes each cash flow arrives at the end of its year and does not include taxes, inflation adjustments, financing effects, or irregular timing.
6 min read Read article
Net Profit Calculator
Estimate net profit and net profit margin by subtracting operating costs, other expenses, and taxes from revenue. Enter all amounts in the same currency and period.
5 min read Read article
Opportunity Cost Calculator
Compare the estimated net value of two business choices over the same period using your own benefit and cost estimates. The result is the value of the alternative minus the value of the option you choose.
6 min read Read article
Overhead Rate Calculator
Calculate an overhead rate from total indirect costs and direct labor hours, then estimate the overhead allocated to a project using its labor hours.
5 min read Read article
Payback Period Calculator
Estimate the simple payback period for an investment by dividing its initial cost by the consistent net cash flow it generates per year. This model assumes the same annual cash flow throughout the period and does not account for discounting or partial-year timing.
6 min read Read article
Payroll Cost Calculator
Estimate monthly employer payroll cost from employee count, weekly hours, hourly pay, an employer payroll burden percentage, and monthly benefits per employee. The estimate assumes 52 paid weeks per year and spreads annual wages evenly across 12 months.
6 min read Read article
Percentage Discount Calculator
Calculate the discount amount and final price from an original price and a percentage discount. Enter both values in the same currency.
5 min read Read article
Present Value Calculator
Estimate the present value of a future cash amount using an annual discount rate and the number of years until it is received. This calculation assumes one amount, a constant annual rate, and annual compounding.
6 min read Read article
Business Service Pricing Calculator
Estimate a service quote from labor, materials, overhead, and a target margin. Enter costs for one project; the estimate uses a cost-plus margin formula and does not include taxes or other unentered charges.
6 min read Read article
Independent Event Probability Calculator
Estimate the probability that at least one of several independent events occurs using each event's probability. Enter probabilities as percentages. The calculation assumes events are independent.
5 min read Read article
Profit Margin Calculator
Calculate gross profit margin from revenue and cost of goods sold. Enter both amounts in the same currency to see the share of revenue remaining after those costs.
5 min read Read article
Profit Sharing Calculator
Estimate an employee's share of a distributable profit pool using the employee's allocation points and the total points assigned to all eligible participants. This simplified model assumes the pool and point totals have already been determined.
5 min read Read article
Return on Investment Calculator
Estimate simple return on investment as a percentage from the amount invested and the total value returned. Enter amounts in the same currency and treat the result as a basic comparison, before any costs or timing adjustments not included in the inputs.
6 min read Read article
Revenue Growth Rate Calculator
Calculate the percentage change in revenue between two comparable periods using amounts entered in the same currency. This arithmetic result describes the change between the supplied periods and does not forecast future performance.
5 min read Read article
Sales Commission Calculator
Estimate sales commission from a sale amount using a base commission rate and an optional rate adjustment. This simple model does not account for quotas, tiers, caps, draws, taxes, or payment timing.
5 min read Read article
Sales Tax Calculator
Calculate estimated sales tax on a taxable subtotal using a rate you provide. This tool performs arithmetic only and does not determine applicable rates or what is taxable.
5 min read Read article
Sample Size Calculator for a Proportion
Estimate the number of independent observations needed to estimate a population proportion at a chosen confidence level and margin of error, using a normal approximation and a conservative proportion when no prior estimate is supplied.
6 min read Read article
Small Business Loan Calculator
Estimate the monthly payment on a fixed-payment small business loan from the principal, annual interest rate, and repayment term. This estimate excludes fees and lender-specific terms.
5 min read Read article
Four-Value Population Standard Deviation Calculator
Calculate the population standard deviation for exactly four numeric values by finding their mean and the square root of their average squared deviation from that mean.
5 min read Read article
Supplier Evaluation Total Calculator
Calculate a weighted supplier evaluation total from quality, delivery, and service scores. This worksheet-style model multiplies the quality and delivery scores by their weights, then adds the service score directly. Scores and weights use a 0–100 scale, and the result is an evaluation total in points.
5 min read Read article
Timesheet Work Hours Calculator
Estimate net work hours for one work period by subtracting an unpaid break from the elapsed hours. Enter elapsed hours as a decimal, such as 7.5 for seven hours and thirty minutes.
5 min read Read article
Training Handout Printing Cost Calculator
Estimate the total printing cost for training handouts by multiplying the number of participants by pages per handout and cost per page.
5 min read Read article
Variance Calculator
Calculate the population or sample variance from a set of numerical observations using the sum of squared deviations and the appropriate denominator.
6 min read Read article
VAT Calculator
Calculate the VAT amount from a net amount before VAT or a gross amount that already includes VAT, using the rate you enter.
6 min read Read article
Weighted Average Calculator
Calculate the weighted average of three values using their relative weights. Enter each value and a positive weight; weights do not need to add to a particular total.
5 min read Read article
Working Capital Calculator
Calculate working capital as current assets minus current liabilities using figures you provide. This simple snapshot does not assess liquidity quality, timing, or future cash needs.
5 min read Read article
Working Hours Calculator
Calculate net working hours for a work period by subtracting an unpaid break from the total time between start and end.
6 min read Read article