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Finance Calculators
Free calculators for mortgages, investments, taxes, salary, and personal budgeting. Everything runs in your browser — no login required.
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Mortgage Calculator
Calculate your monthly mortgage payment, total interest, and loan cost.
Compound Interest Calculator
See how your money grows over time with compound interest and regular contributions.
Loan Amortization Calculator
Generate a full loan amortization schedule showing principal and interest per payment.
Percentage Calculator
Calculate percentages, percent change, and percent difference.
Tip Calculator
Calculate how much to tip at a restaurant, split the bill among multiple people, and see the total per person.
Tax Bracket Calculator
Estimate your 2025 US federal income tax and effective tax rate by bracket.
Investment Return Calculator
Calculate ROI, CAGR, and average annual rate of return on any investment — including annualized return and total gain or loss.
Salary Calculator
Convert between hourly, daily, weekly, bi-weekly, monthly, and annual salary.
Budget Calculator
Split your income using the 50/30/20 rule — needs, wants, and savings.
Discount Calculator
Calculate sale prices, discount percentages, and how much you save.
Net Worth Calculator
Add up your assets and liabilities to find your current net worth.
Debt Payoff Calculator
Calculate how long it takes to pay off a debt, total interest paid, and how much extra payments save.
Savings Goal Calculator
Calculate how long it takes to reach a savings goal and how much interest you will earn along the way.
Inflation Calculator
Calculate the inflation-adjusted value of money over time using a custom or historical inflation rate.
FINANCE GUIDES
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What is Compound Interest?
How compound interest works, the formula, and why starting early makes such a dramatic difference.
How to Calculate ROI
What ROI means, how to calculate it, and when to use CAGR for multi-year investments.
How to Calculate a Tip
Quick mental math methods for 15%, 18%, and 20% tips, standard tipping norms by service type, and worked examples.
How to Create a Monthly Budget
A practical guide to the 50/30/20 rule, how to categorize spending, and common budgeting mistakes to avoid.
What is a Mortgage?
How mortgages work, what PITI means, how amortization determines what you pay, and fixed vs. adjustable rates explained.
How Tax Brackets Work
What marginal tax rates mean, how brackets apply to your income, and the difference between your marginal and effective rate.
How to Calculate Net Worth
What counts as an asset or liability, a worked example, and what net worth benchmarks look like by age.
How to Calculate a Discount
The three core discount formulas, mental math shortcuts for common percentages, and how stacked discounts work.
How to Convert Hourly to Annual Salary
The formula for converting hourly wage to annual salary, a quick reference table, and the mental math shortcut.
How to Pay Off Debt
The debt avalanche and debt snowball methods explained, how to choose between them, and a worked example showing total interest for each strategy.
How to Set a Savings Goal
How to calculate your required monthly savings, benchmarks for common goals like emergency funds and down payments, and which account type to use.
What is Inflation?
How inflation is measured, what it does to purchasing power over time, the Rule of 72, and why it matters for savings and investing.
How to Calculate a Percentage
The three core percentage formulas, mental math shortcuts for common percentages, and worked examples for tax, tips, discounts, and salary changes.