Finance Calculators

Work back from your income and debts to the highest house price the front-end and back-end DTI limits support, for conventional, FHA, VA or custom thresholds.

Loan-to-Value (LTV) Calculator

Solve LTV, the loan amount or the appraised value, plus combined LTV across a first mortgage and any HELOC, against the PMI and FHA thresholds.

401(k) Calculator

Project your 401(k) balance at retirement, including employer match, IRS contribution limits, and catch-up contributions.

Simple Interest Calculator

Calculate simple interest and total repayment using I = Prt, or solve for principal, rate, or time.

Compound Interest Calculator

Calculate compound interest and compare annual, monthly, daily, and continuous compounding frequencies.

Interest Rate Calculator

Find the interest rate needed to grow a starting amount into a target amount.

Investment Calculator

Project investment growth from a starting amount plus monthly contributions at an assumed rate of return.

Savings Calculator

Project a savings account balance from a starting amount, monthly deposits, and your bank’s APY.

Savings Goal Calculator

Calculate the monthly deposit needed to reach a savings goal by a target date.

ROI Calculator

Calculate total and annualized ROI on a single investment, including dividends or other income.

CAGR Calculator

Find the compound annual growth rate between a beginning and ending value over any number of years.

Future Value Calculator

Project a lump sum plus optional periodic contributions forward at a set rate and compounding frequency.

APR / APY Calculator

Convert a nominal rate into an effective APY, or into a cost-inclusive APR with points and fees.

CD / Money Market Calculator

Maturity value and APY for a CD or money market account, with early withdrawal penalties and a tax switch.

Rule of 72 Calculator

Estimate how long money takes to double, shown next to the exact answer and the deviation between them.

Income Tax Calculator

Full bracket-by-bracket income tax for the US (2026) and the UK (2026/27), with effective and marginal rates and European comparison figures.

Sales Tax Calculator

Calculate the sales tax amount and total price, or back into the pre-tax price from a tax-inclusive total.

VAT Calculator

Add or remove VAT with UK presets and standard rates for all 27 EU member states, showing net, VAT, and gross separately.

Discount Calculator

Percent off, a fixed amount off, reverse-solve the original price, or add tax after a discount.

Inflation Calculator

Calculate U.S. inflation between two years and adjust a dollar amount for purchasing power, using live CPI-U data.

Depreciation Calculator

Straight line, declining balance, double declining balance and sum of the years' digits, with a year-by-year book value schedule.