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    <title>The Handy Calculators — Updated Recently</title>
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    <description>New and updated free calculators on The Handy Calculators — money, time, health, education, conversions, home, and real estate.</description>
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    <lastBuildDate>Mon, 08 Jun 2026 12:00:00 GMT</lastBuildDate>
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      <title>1031 Exchange Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Real Estate</category>
      <description>Deferred gain, recognized boot from cash and debt relief, federal tax owed, and carryover basis on a like-kind real estate exchange.</description>
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    <item>
      <title>401k &amp; Retirement</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Money</category>
      <description>Project your retirement balance with employer match and growth.</description>
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    <item>
      <title>70% Rule Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Real Estate</category>
      <description>Maximum offer for a flip — 70% of ARV minus repairs, with adjustable spread for any market.</description>
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    <item>
      <title>Add or Subtract Days</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Time</category>
      <description>Add or subtract days, weeks, months, years, or business days from any date.</description>
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    <item>
      <title>Age Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Time</category>
      <description>Your exact age in years, months, days, hours, and minutes.</description>
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    <item>
      <title>APR vs APY Converter</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Money</category>
      <description>Convert between APR and APY for any compounding frequency.</description>
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      <title>Area of a Circle Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Education</category>
      <description>Find the area of a circle from its radius, diameter, or circumference with the exact formula A = π × r².</description>
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      <title>Average Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Education</category>
      <description>Mean, median, mode, sum, count, min, max, and range for any list of numbers.</description>
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      <title>Bayes&apos; Theorem Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Education</category>
      <description>Update prior beliefs with new evidence using Bayes&apos; rule — posterior probability with tree diagram.</description>
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    <item>
      <title>Binomial Distribution Calculator</title>
      <link>https://thehandycalculators.com/binomial-distribution</link>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Education</category>
      <description>Compute P(X=k), cumulative probabilities, mean, and variance for n trials with success probability p.</description>
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    <item>
      <title>BMI Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Health</category>
      <description>Body mass index in metric or US units, with category.</description>
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      <title>BMR Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Health</category>
      <description>Basal metabolic rate using Mifflin-St Jeor and Harris-Benedict, with activity-multiplier TDEE.</description>
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    <item>
      <title>Body Fat Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Health</category>
      <description>Estimate body fat percent with the US Navy circumference method, plus a BMI-based check.</description>
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      <title>Body Roundness Index (BRI)</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Health</category>
      <description>Models the body as an ellipse from waist and height — predicts mortality risk better than BMI.</description>
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    <item>
      <title>Business Days Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Time</category>
      <description>Count business days between two dates or add/subtract working days from any date, with custom holidays excluded.</description>
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    <item>
      <title>Calorie Calculator (TDEE)</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Health</category>
      <description>Daily calories to lose, maintain, or gain weight using Mifflin-St Jeor.</description>
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      <title>Calorie Deficit Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Health</category>
      <description>Daily calorie target for weight loss at your chosen pace, plus weeks to your goal — companion to the TDEE calculator.</description>
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      <title>Cap Rate Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Real Estate</category>
      <description>Capitalization rate from NOI and value, or solve for value, NOI, or required cap rate.</description>
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      <title>Car Payment Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Money</category>
      <description>Monthly car payment including tax, trade-in, and down payment.</description>
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    <item>
      <title>Cash-on-Cash Return</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Real Estate</category>
      <description>Annual cash flow divided by cash invested — the levered return on a rental property.</description>
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    <item>
      <title>Catering Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Home</category>
      <description>Food quantities, staff count, and total bill (with service charge, tax, gratuity) for any event style.</description>
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      <title>Chi-Square Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Education</category>
      <description>Goodness-of-fit and independence tests with expected counts, chi-square statistic, and p-value.</description>
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      <title>Circumference Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Education</category>
      <description>Find the circumference of a circle from its radius, diameter, or area using C = 2 × π × r.</description>
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      <title>Closing Costs Estimator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Real Estate</category>
      <description>Buyer closing-cost breakdown by line item — lender, title, government, prepaids — plus cash-to-close.</description>
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    <item>
      <title>Compound Interest</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Money</category>
      <description>Project your investment growth over years or decades.</description>
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    <item>
      <title>Concrete Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Home</category>
      <description>Cubic yards needed for slabs, driveways, and patios — plus bags and cost.</description>
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    <item>
      <title>Cone Volume Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Education</category>
      <description>Volume, slant height, and surface area of a cone from base radius and height using V = (1/3) × π × r² × h.</description>
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      <title>Confidence Interval Calculator</title>
      <link>https://thehandycalculators.com/confidence-interval</link>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Education</category>
      <description>Compute z or t confidence intervals for a mean, with margin of error breakdown.</description>
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      <title>Cooking Conversions</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Conversions</category>
      <description>Cups, tablespoons, grams, ounces, and milliliters — plus oven temperature conversions.</description>
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      <title>Correlation Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Education</category>
      <description>Pearson correlation coefficient r with scatter plot, regression line, and interpretation guide.</description>
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      <title>Cost of Living Comparison</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Money</category>
      <description>Salary you need in another city to maintain the same standard of living.</description>
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      <title>Course Grade Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Education</category>
      <description>Weighted course grade from assignments, quizzes, and exams. Shows current grade plus the score needed on remaining work.</description>
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      <title>Credit Card Payoff</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Money</category>
      <description>How long it takes — and how much interest you&apos;ll pay — at your current monthly payment.</description>
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      <title>Currency Converter</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Money</category>
      <description>Live exchange rates between major world currencies — updated daily (ECB).</description>
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      <title>Cylinder Volume Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Education</category>
      <description>Volume and surface area of any cylinder from its radius and height using V = π × r² × h.</description>
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      <title>Date Difference</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Time</category>
      <description>Days, weeks, months, and years between any two dates — with optional business-days-only count.</description>
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    <item>
      <title>Days Until a Date</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Time</category>
      <description>Countdown to any future date — birthdays, holidays, deadlines.</description>
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      <title>Discount Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Money</category>
      <description>Find the sale price after any percentage discount.</description>
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      <title>Dog Age Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Health</category>
      <description>Convert your dog&apos;s age to human-equivalent years using either the AVMA size-aware method or the 2019 epigenetic clock, with small/medium/large/giant breed</description>
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      <title>Fraction Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Education</category>
      <description>Add, subtract, multiply, and divide fractions and mixed numbers — results returned simplified, as a mixed number, and as a decimal.</description>
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      <title>Gas Mileage Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Conversions</category>
      <description>MPG from miles and gallons, plus total trip fuel cost at any price per gallon.</description>
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      <title>GPA Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Education</category>
      <description>Calculate your semester or cumulative GPA on a 4.0 scale.</description>
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      <title>Grade Needed Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Education</category>
      <description>Find the GPA you need on remaining coursework to hit a target cumulative GPA.</description>
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      <title>Heart Rate Zone Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Health</category>
      <description>Calculate your five training heart-rate zones from age and resting HR using Tanaka, Fox, Gulati, or Karvonen heart-rate-reserve formulas.</description>
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      <title>HELOC Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Money</category>
      <description>Home equity line of credit: max borrow, interest-only payment, and full repayment cost.</description>
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      <title>Hotel Income Proforma</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Real Estate</category>
      <description>ADR × Occupancy × Keys → RevPAR, NOI, and value per key.</description>
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      <title>Hourly to Salary</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Money</category>
      <description>Convert hourly wage to annual salary (and back) with custom hours per week.</description>
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      <title>How Long Have I Been Married?</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Time</category>
      <description>Enter your wedding date and see your exact marriage length in years, months, days, hours, and seconds — with traditional anniversary gifts.</description>
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      <title>How Long Have We Been Together?</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Time</category>
      <description>Enter the day your relationship started and see exactly how long you&apos;ve been together — to the second. Perfect for anniversaries.</description>
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      <title>Ideal Weight Calculator</title>
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      <pubDate>Mon, 08 Jun 2026 12:00:00 GMT</pubDate>
      <category>Health</category>
      <description>Estimate ideal body weight from height, sex, and frame using Hamwi, Devine, Robinson, and Miller formulas, plus the healthy-BMI range.</description>
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