Date Calculator
Count the days between two dates, with business days, weeks, and a years-months-days breakdown that lands exactly on your end date. Leap years handled.
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Free, fast, source-cited calculators that work without JavaScript. Every result is a shareable link, every formula is tested against a published authority.
Count the days between two dates, with business days, weeks, and a years-months-days breakdown that lands exactly on your end date. Leap years handled.
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Calculate age in completed years, months and days for any explicit comparison date, with exact elapsed days and the next birthday shown.
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Work out your monthly mortgage payment with taxes, insurance, PMI and HOA, then see the full amortization schedule and what the loan really costs.
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Estimate your FHA loan payment with upfront and annual MIP, taxes, insurance and HOA, using HUD’s own mortgage insurance rate table and cancellation rules.
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Calculate your VA loan monthly payment with accurate funding fees, interest costs, and amortization based on current rates and loan terms.
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Calculate the APR on a loan including fees, and see how far the annual percentage rate sits above the note rate you were quoted.
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Work out the monthly payment, total interest and payoff timeline on a fixed-rate personal loan, and see what paying a little extra each month would save you.
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See what regular saving really becomes: future value, total interest and the true APY for any rate, term and compounding frequency, year by year.
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Work out the interest a lump sum earns, compare simple against compound, and see the APY that any quoted rate and compounding schedule really pays.
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Know the loan amount, the monthly payment and the term but not the rate? Solve for the interest rate you are really paying, using the Regulation Z method.
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Solve any one of the five time-value-of-money variables — periods, rate, present value, payment or future value — from the other four, with signed cash flows.
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Work out how much of your traditional IRA contribution is deductible, then compare traditional against Roth on what each actually leaves you after tax.
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Work out your required minimum distribution from the IRS Uniform Lifetime Table, and project what you must withdraw from an IRA year by year from age 73.
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Work out your 2026 federal income tax from the official IRS brackets, see your marginal and effective rate, and exactly what each tax bracket cost you.
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Convert pay between hourly, daily, weekly, biweekly, semimonthly, monthly and annual using the FLSA conversion, and see what an hour actually worked is worth.
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See what your savings reach by retirement, the nest egg your income goal really needs, and the monthly contribution that closes the gap. Inflation-adjusted.
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Work out a car payment the way a dealer does — sales tax, title and fees financed, trade-in and negative equity included, with the total interest shown.
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Build a dated amortization schedule for any fixed-rate loan, split every payment into principal and interest, and see how extra payments change payoff.
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Project your 401(k) balance with salary growth, employee deferrals, employer matching, monthly compounding, and the official 2026 IRS limits.
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Estimate your 2025 or 2026 Roth IRA contribution limit from IRS income rules, then project the balance, contributions and tax-free growth over time.
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Estimate a fixed student loan payment, total interest and payoff time, then see how extra monthly principal could reduce the cost.
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Project an investment with monthly contributions, annual fees, and inflation. See growth, fee drag, and the ending value in today’s dollars.
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Compare renting with buying by net worth, including mortgage equity, closing and selling costs, upkeep, rent growth, and invested cash differences.
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Compare Social Security retirement benefits from age 62 to 70 using official SSA reductions, delayed credits, full retirement age, and rounding rules.
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Estimate 2026 federal tax on a short- or long-term capital gain using sale proceeds, adjusted basis, filing status, and taxable income.
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Compare your current mortgage payoff with extra monthly principal or an immediate lump sum, and see the payoff date, interest, and time saved.
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Compare a fixed-rate mortgage refinance with your current payment, including closing costs, break-even timing, five-year cost, and lifetime savings.
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See how much house you can afford from your income, debts and down payment using the 28/36 front-end and back-end ratios, with a full monthly breakdown.
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Size your home equity line of credit, then see the interest-only draw payment, the amortizing repayment payment, and the payment shock between them.
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Work out your home equity loan payment, how much you can borrow at your lender’s combined loan-to-value cap, total interest, and both loans together.
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Work out your body mass index from height and weight in either units, see which NHLBI category it falls in, and the healthy weight range for your height.
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Work out the calories you need each day from the Mifflin-St Jeor equation and FAO activity levels, with targets for losing or gaining weight at a chosen rate.
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Calculate a percentage of a number, find what percentage one value is of another, or measure percentage change with exact decimal arithmetic.
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Evaluate sine, cosine, tangent, logarithms, square roots and powers with decimal-safe inputs, degree or radian angles, and cited formulas.
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