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952 free calculators for finance, insurance, tax and investing
Mortgages, loans, insurance, investing, tax and business — instant results, clear breakdowns, and plain-English explanations.
Search UI ports in Week 6 — use popular links or browse categories below.
The 50/30/20 rule
50/30/20
Monthly income
$4,200
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Needs · 50%
$2,100
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Wants · 30%
$1,260
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Savings · 20%
$840
Run it with your numbers
Featured calculators
The ones people open most often.
- personal finance 50/30/20 Budget Planner Utilize the 50/30/20 rule with our budget planner to manage your finances better and ensure every dollar is allocated wisely.
- personal finance Debt Payoff Calculator Discover how extra payments can help you pay off debt faster and save on interest with our easy-to-use debt payoff calculator.
- personal finance Retirement Calculator Estimate your retirement savings with our calculator. Input your current savings and contributions to see your potential future corpus.
- personal finance Compound Interest Calculator See how regular contributions and reinvested returns grow into a future value — with an inflation-adjusted view of what it is really worth.
- personal finance Inflation Calculator Discover how inflation affects your money's value over time. Calculate future costs and make informed financial decisions with our easy-to-use tool.
- personal finance Income Tax Calculator Estimate your federal income tax easily with our calculator. Understand your tax liability and plan your finances effectively.
- personal finance Take-Home Pay Calculator Discover your actual earnings with our take home pay calculator. Subtract taxes to see what truly goes into your pocket each month.
- insurance Life Insurance Needs Calculator Discover how much life insurance your family needs by calculating income replacement, debts, and final expenses. Get started today!
- insurance ACA Health Insurance Subsidy Calculator Estimate your ACA marketplace premium tax credit from household income, size and the benchmark silver premium.
- insurance Home Insurance Calculator Calculate the dwelling coverage your home needs with our home insurance calculator, ensuring you have the right protection for your property.
- insurance Car Insurance Cost Calculator Calculate your car insurance premium easily. Input your details like age and vehicle value to get an estimate tailored to your situation.
- insurance Renters Insurance Calculator Quickly estimate your renters insurance premium based on your belongings, liability limit, and deductible. Understand your costs clearly.
Browse by category
7 topics, each with its own set of calculators and guides.
- Personal Finance 242 Budget, save, and plan with confidence
- Insurance 121 Estimate premiums and the coverage you need
- Loans & Mortgage 140 Know the true cost before you sign
- Investment 202 Model returns, yields and real estate deals
- Business & Tax 175 Margins, payroll, and what you owe
- Comparison 9 Put two options side by side
- Planning & Life 63 Cost out the big life decisions
Comprehensive guides
In-depth guides covering every major financial topic.
personal finance
Personal Finance 2026: The Complete Guide to Budgeting, Saving & Building Wealth
A comprehensive guide to managing your money, from your first paycheck to financial independence. Includes free calculators for every step.
insurance
Insurance 2026: Life, Health, Auto, Home & Specialty Coverage Guide
A complete guide to insurance: what you need, how much to buy, and how to avoid overpaying for coverage you do not need.
loans mortgage
Loans & Mortgage 2026: How to Borrow Smart and Pay Less Interest
Everything you need to know about mortgages, auto loans, student loans, and personal borrowing — from comparing rates to paying off early.
investment
Investing 101: Stocks, Bonds, ETFs, Real Estate & Portfolio Strategy (2026)
From your first index fund to advanced portfolio strategy — everything you need to invest with confidence.
business tax
Business Finance & Tax 2026: Margins, Payroll, Cash Flow & What You Owe
From profit margins to payroll taxes — practical financial guidance for small business owners, freelancers, and entrepreneurs.
comparison
How to Compare Financial Products 2026: Loans, Cards, Accounts & Insurance
Stop guessing — learn how to compare financial products head-to-head so you always pick the cheapest, best option.
educational
Life Events & Financial Planning 2026: Weddings, Babies, College, Moves
Financial planning for every major life event — from your first job to retirement, with calculators for each milestone.
Latest guides
Guides →personal finance
The 50/30/20 Rule: Budgeting Made Simple
How the 50/30/20 rule splits your take-home pay into needs, wants, and savings — with worked examples and when it is okay to bend the rule.
personal finance
How to Build an Emergency Fund
How big your emergency fund should be, how to build it in the right order, and where to keep it so it earns interest and stays liquid.
personal finance
Inflation and Your Purchasing Power
What CPI inflation does to your purchasing power — at 3%, $100 becomes $74 in 10 years and $41 in 30. Real vs nominal returns included.
Why these calculators?
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Real formulas, not vibes
Every tool uses the published math — amortization, IRR, NPV, progressive tax brackets — so you can audit the numbers.
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Open and free
No signup, no paywalls, no saved data. The full URL reflects your inputs so a shared link reproduces the result.
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Plain-English explainers
Each tool comes with the formula, a worked example, and the caveats lenders and insurers leave out.