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Free Finance Tools

Profit, margins, interest, tax, and investment calculators

Salary Calculator

Convert salary across pay periods with international tax estimates, multiple currencies, city modifiers, and PPP comparison.

Compound Interest Calculator

See how your investment grows over time with compound interest. Year-by-year breakdown.

Profit Margin Calculator

Calculate gross, net, and operating profit margin. Includes markup vs margin explanation.

Break-Even Calculator

Find the exact units or revenue needed to cover your costs. With break-even chart.

Add or remove VAT from any price. Supports custom rates and all major country rates.

Rent vs Buy Calculator

Compare 10-year wealth, break-even point, and monthly costs for renting vs buying. Supports UK, US, Canada, Australia and more.

Investment Growth & Inflation Calculator

See how your investments grow in real terms after inflation. Nominal vs real value, purchasing power chart, year-by-year breakdown.

Debt Avalanche vs Snowball Calculator

Enter all your debts and compare avalanche vs snowball payoff strategies. See interest saved, payoff timeline, and debt-free date.

Inflation-Adjusted Salary Calculator

Compare salary growth against inflation. See real pay, required equivalent salary, and purchasing-power gain or loss over time.

Dividend Reinvestment Calculator

Model DRIP investing with share-price growth, dividend growth, taxes, and ongoing contributions. See value, income, and share count over time.

Portfolio Drawdown Analyzer

Analyze return or balance sequences to find maximum drawdown, recovery time, ulcer index, and the worst peak-to-trough period.

Financial Health Snapshot

Score cash flow, savings, debt load, emergency runway, and retirement progress to get a practical personal finance health snapshot.

Subscription and Bill Creep Analyzer

Find recurring bills, subscription creep, annualized monthly costs, and realistic savings hiding inside everyday spending.

Emergency Fund and Deductible Planner

Plan a cash buffer that covers monthly essentials, insurance deductibles, urgent repairs, income shocks, and dependents.

Cost of Living Stress Test

Stress-test monthly cash flow against rent, mortgage, bills, debt, insurance, inflation, and income shocks.

Portfolio Stress Tester

Stress-test a portfolio against market drops, inflation spikes, and rate shocks to see value impact, recovery targets, and downside pressure.

Free Finance Calculators & Tools

All tools on this page are completely free to use, require no account or signup, and run entirely in your browser. Your data is never sent to a server. Results are instant.

These tools are built for professionals who need quick, accurate answers — not long explanations. Every calculator shows its formula so you can verify the logic.