Percentage Calculator
Work out a percentage of a number, a change or a difference.
Finance tools
Money calculations with the assumptions spelled out. Compare loan payments and interest growth, or work out a discount and the price after tax. These are calculators, not financial advice, and each page lists the formula and the inputs it assumes.
38 tools in this part of the catalogue.
Featured Finance tools
Loans and interest14 tools
Loan Payment Calculator
Estimate the fixed payment, total paid and total interest on a loan.
Compound Interest Calculator
Estimate how a balance grows with compound interest and contributions.
Mortgage Calculator
Estimate a fixed-rate mortgage payment with tax and insurance.
Simple Interest Calculator
Calculate simple interest from a principal, rate and term.
Savings Goal Calculator
Find the monthly deposit for a savings target.
CAGR Calculator
Calculate annualized growth between two values.
Net Present Value Calculator
Discount a cash-flow series from time zero.
Debt Payoff Planner
Compare two debt repayment orders.
Credit Card Payoff Calculator
Model a card balance and monthly payments.
Loan Refinance Comparison
Compare remaining loan and refinance costs.
Loan Fee and Effective Rate Calculator
Model borrowing yield including upfront fees.
Retirement Savings Projection
Project saving and withdrawal scenarios.
Internal Rate of Return Calculator
Find periodic cash-flow return candidates.
Rent or Buy Scenario Calculator
Compare rent and buy wealth scenarios.
Shopping and discounts8 tools
Discount Calculator
Calculate a sale price, the discount amount and any tax.
Tip Calculator
Calculate a tip, bill total and amount per person.
Sales Tax Calculator
Add sales tax to a price, or find the tax inside a total.
Margin and Markup Calculator
Find margin and markup from an item's cost and selling price.
Purchasing Power Calculator
Model purchasing power with entered inflation.
Unit Price Comparison
Compare two packs on the same unit basis.
Subscription Cost Calculator
Total recurring costs on a shared annual basis.
Currency Converter
Convert currencies using your own rate.
Business and pay15 tools
Break-even Calculator
Work out the units and revenue needed to cover fixed costs.
Salary to Hourly Calculator
Turn an annual salary into an hourly rate, or the reverse.
Return on Investment Calculator
Calculate simple ROI after entered costs.
Payback Period Calculator
Find recovery time from entered net receipts.
Cost of Goods Sold Calculator
Calculate COGS from inventory and purchases.
Inventory Turnover Calculator
Calculate inventory turns and days from costs.
Business Liquidity Calculator
Check working capital and liquidity ratios.
Freelance Rate Calculator
Set a gross hourly target from billable time.
Overtime Pay Calculator
Calculate pay from an entered overtime rule.
Commission Calculator
Calculate flat or marginal tier commissions.
Depreciation Calculator
Build a modeled annual depreciation schedule.
Economic Order Quantity Calculator
Model order quantity under constant demand.
Budget Planner
Add up a monthly budget by category.
Shared Expense Settlement
Settle a group’s shared expenses.
Cash Drawer Reconciliation
Check a drawer’s cash over or short.
More Finance tools
Percentage Calculator
Work out a percentage of a number, a change or a difference.