Clear numbers. Better questions.
Practical financial calculators built to explain the results
AutomatorLabs provides free calculators and beginner-friendly guides for investing, retirement, debt, home buying, budgeting, and savings. Test assumptions, compare scenarios, and understand what the numbers mean before making a financial decision.
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Popular calculators
Compound Interest Calculator
Estimate your future balance, total contributions, and interest earned with regular monthly investments.
Use calculator Free calculatorDaily Compound Interest Calculator
Estimate compound growth when a nominal annual rate compounds daily.
Use calculator Free calculatorSavings Rate Calculator
Calculate what percentage of your income you save each month.
Use calculator Free calculatorMonthly Compound Interest Calculator
Project growth using monthly compounding and regular contributions.
Use calculator Free calculatorFIRE Calculator
Estimate how much you need to reach financial independence and retire early.
Use calculator Free calculatorQuarterly Compound Interest Calculator
Estimate future value when interest compounds four times per year.
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Calculator categories
FIRE & Retirement Calculators
Plan financial independence, retirement timing, withdrawals, and sustainable income.
25 calculatorsInvesting Calculators
Explore growth, returns, inflation, dividends, fees, and investment strategies.
20 calculatorsDebt & Loan Calculators
Estimate payments, payoff timelines, interest costs, and debt repayment strategies.
12 calculatorsHome & Mortgage Calculators
Compare housing choices, mortgage costs, home equity, affordability, and down payments.
11 calculatorsBudgeting & Savings Calculators
Build stronger cash flow, savings habits, emergency funds, and personal balance sheets.
10 calculatorsCollege & Tax-Advantaged Account Calculators
Plan education costs and compare retirement, health, and tax-advantaged accounts.
6 calculatorsLearn the basics
Latest guides
Retirement Planning Guide Hub
Plan retirement by connecting spending, savings, investment accounts, withdrawal rates, timelines, and practical calculator examples.
Read guide Financial independenceA Beginner's Guide to FIRE
Learn how financial independence planning connects spending, saving, investing, and a sustainable withdrawal strategy.
Read guide Investing guideInvesting Basics for Long-Term Growth
Understand compounding, risk, inflation, fees, diversification, and the assumptions behind long-term investment projections.
Read guide GuideAPR vs APY: What’s the Difference?
APR and APY both describe an annual interest rate, but they answer different questions. APR generally states a nominal yearly rate before t…
Read guide GuideDaily vs Monthly Compounding: Does It Matter?
Daily compounding sounds dramatically faster than monthly compounding, but the real difference depends on the rate, balance, time, and way…
Read guide GuideEffective Annual Rate (EAR) Explained
Effective annual rate, commonly shortened to EAR, converts a nominal annual rate and its compounding schedule into the actual percentage ch…
Read guide ComparisonFIRE vs Coast FIRE: What’s the Difference?
FIRE and Coast FIRE both use long-term investing to create more freedom, but they describe different milestones. Traditional FIRE means hav…
Read guide ComparisonLean FIRE vs Fat FIRE: Which Path Fits You?
Lean FIRE and Fat FIRE use the same basic financial independence math but apply it to very different spending plans. Lean FIRE aims to supp…
Read guideJust for fun
Data playground
The Birth Lottery
What were the odds of being born in your country, in your year? Check your ticket — luck index, alternate lives, and the whole board.
Check your ticket Interactive toolPurple Star Chart
The thousand-year-old Eastern birth chart — 12 life areas, 100+ stars, explained like a friend would. What does your birth hour say about you?
Check your ticket Interactive toolWhere Do You Rank?
Type in your income or net worth and find out where you actually stand — in your country, and against every adult on Earth. Most people guess way low.
Check your ticketWhy AutomatorLabs
Why these tools exist
Financial questions often begin with a simple calculation, but a number without context can be misleading. These tools pair clear inputs and outputs with explanations, common mistakes, FAQs, and related guides.
The calculators are designed for exploring scenarios, not predicting the future or replacing professional advice. Change one assumption at a time, compare cautious and optimistic cases, and use the result as a starting point for a more informed decision.
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