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Financial Calculators

  • 401(k) Calculator — Balance at retirement with employer match, raises and 2026 contribution limits.
  • Amortization Calculator — Full monthly amortization schedule with yearly totals and extra-payment savings.
  • Auto Loan Calculator — Monthly car payment with trade-in, sales tax, fees and a term-by-term comparison.
  • CAGR Calculator — Compound annual growth rate from start and end values, or the end value from a rate.
  • Compound Interest Calculator — Growth with contributions, any compounding frequency, APY and the A = P(1 + r/n)^nt working.
  • Credit Card Payoff Calculator — Months to pay off a card, the payment for a target date, and the true cost of minimums.
  • Debt-to-Income Ratio Calculator — Front-end and back-end DTI checked against the 28/36 rule, FHA and Fannie Mae limits.
  • Home Affordability Calculator — Maximum home price from your income and debts (28/36 or FHA) or from a monthly budget.
  • Income Tax Calculator — 2026 federal income tax with bracket breakdown, marginal and effective rate.
  • Inflation Calculator — Future cost of today's money and the value of past money, at any average inflation rate.
  • Investment Calculator — Project portfolio growth with contributions, yearly increases and today's-dollar value.
  • Loan Calculator — Payment, total interest and payoff date for any fixed-rate loan, with a yearly schedule.
  • Mortgage Calculator — Monthly payment with taxes, insurance, PMI and an amortization schedule.
  • Paycheck Calculator — Take-home pay per check after federal, FICA and state tax, 401(k) and health premiums.
  • Profit Margin Calculator — Gross profit, margin and markup from cost and price, or the price for a target margin.
  • Retirement Calculator — Projected savings vs. what you need, with inflation, Social Security and a shortfall fix.
  • ROI Calculator — ROI percentage, net gain and annualized ROI from amounts invested and returned.
  • Salary Calculator — Convert hourly, weekly, biweekly, monthly and annual pay with your own hours.
  • Sales Tax Calculator — Add tax to a price, remove it from a total, or find the rate from a receipt.
  • Savings Calculator — Future balance, months to reach a goal, or the monthly deposit you need, at any APY.
  • Simple Interest Calculator — Interest and total amount with I = Prt, in years, months or days, with steps.

India Finance Calculators

  • EMI Calculator — Monthly EMI, total interest and repayment schedule for home, car and personal loans.
  • FD Calculator — Fixed deposit maturity amount, interest and monthly payout, with senior citizen rates and TDS.
  • Gratuity Calculator — Gratuity amount with the 15/26 formula, 5-year rule, ₹20 lakh tax-free limit and govt rules.
  • GST Calculator — Add or remove GST at the new 5%, 18% and 40% rates, with CGST, SGST and IGST split.
  • HRA Calculator — Tax-free HRA as the least of three limits, with the 2026 metro city list and the working.
  • Income Tax Calculator India — FY 2026-27 tax under the new and old regimes side by side, with rebate, surcharge and cess.
  • Lumpsum Calculator — Future value of a one-time investment, adjusted for inflation and compared with a SIP.
  • PPF Calculator — Public Provident Fund maturity value at 7.1%, with extensions and a year-by-year table.
  • RD Calculator — Recurring deposit maturity amount for post office and bank RDs, with quarterly compounding.
  • SIP Calculator — Mutual fund SIP maturity value, with optional yearly step-up and growth chart.

Health & Fitness Calculators

  • BMI Calculator — Body mass index with WHO or Asian-Indian categories and your healthy weight range.
  • BMR Calculator — Calories burned at rest with Mifflin-St Jeor, Harris-Benedict and Katch-McArdle side by side.
  • Body Fat Calculator — Body fat % from tape measurements (U.S. Navy method), with fat mass, lean mass and ACE category.
  • Calorie Calculator — Maintenance calories and daily targets to lose or gain weight, in kg or lb.
  • Calories Burned Calculator — Calories burned for 40 activities by body weight and time, using 2024 Compendium MET values.
  • Due Date Calculator — Due date, weeks pregnant today and trimester dates from your last period, conception, IVF or a scan.
  • Ideal Weight Calculator — Ideal body weight from 4 formulas plus the healthy BMI weight range for your height.
  • Macro Calculator — Daily and per-meal grams of protein, carbs and fat for your calorie target and goal.
  • One Rep Max Calculator — Estimate your 1RM from any set of 1 to 12 reps with six formulas and a training load chart.
  • Ovulation Calculator — Ovulation date, fertile window and next period for the coming cycles, with due dates if you conceive.
  • Pace Calculator — Pace per km or mile, finish time or distance, with splits and 5K to marathon predictions.
  • Protein Calculator — Daily and per-meal protein in grams by body weight and goal, with protein in common foods.
  • Sleep Calculator — Best bedtimes or wake-up times in whole sleep cycles, plus recommended sleep hours by age.
  • Target Heart Rate Calculator — Max heart rate, target exercise range and five training zones by age, with optional Karvonen method.
  • TDEE Calculator — Calories you burn per day at every activity level, with Mifflin-St Jeor and Katch-McArdle.
  • Water Intake Calculator — Daily water goal by body weight, exercise and climate, in litres, cups and fl oz.

Math & Statistics Calculators

  • Area Calculator — Area of 12 shapes in square feet, m², acres or hectares, with formulas and steps.
  • Average Calculator — Mean, median, mode, range and weighted average for any list of numbers, with steps.
  • Exponent Calculator — Powers with negative, fractional and decimal exponents, exact big results and solve for x.
  • Fraction Calculator — Add, subtract, multiply, divide and simplify fractions and mixed numbers, with steps.
  • GCF and LCM Calculator — GCF (HCF) and LCM of up to 10 numbers with prime factors and Euclid's algorithm.
  • Percent Error Calculator — Percent, absolute and relative error between a measured and an accepted value, with steps.
  • Percentage Calculator — Percent of a number, percent change, difference and reverse percentages — with steps.
  • Probability Calculator — Both, either or neither event, at least one success in n tries, and exact binomial odds.
  • Pythagorean Theorem Calculator — Find the hypotenuse or a missing leg, plus area, perimeter and angles, with steps.
  • Quadratic Formula Calculator — Roots of ax² + bx + c = 0 with discriminant, vertex, factored form and steps.
  • Random Number Generator — Fair random numbers in any range, with or without repeats, as whole numbers or decimals.
  • Ratio Calculator — Simplify ratios, solve proportions and split an amount in a ratio, with steps.
  • Scientific Calculator — Trig, logs, powers, roots and factorials, with keyboard support and a history of past results.
  • Slope Calculator — Slope from two points or rise and run, with angle, grade, distance and line equations.
  • Square Root Calculator — Square, cube and nth roots with simplified radical form and prime-factor steps.
  • Standard Deviation Calculator — Sample or population SD, variance, mean and standard error, with a full table of deviations.
  • Volume Calculator — Volume of 10 shapes and tanks in litres, gallons, ft³ and m³, with formulas and steps.
  • Z-Score Calculator — Z-scores, percentiles and left, right or two-tailed normal probabilities, with steps.

Date & Time Calculators

  • Age Calculator — Exact age in years, months and days, with total days, next birthday and age on any date.
  • Date Calculator — Add or subtract days, weeks, months or years from a date, with a business-days option.
  • Days Between Dates Calculator — Count days between two dates, with business days, weekends, weeks and months.
  • Hours Calculator — Hours worked from start and end times, minus breaks, with decimal hours, overtime and pay.
  • Time Calculator — Add or subtract hours, minutes and seconds, or add time to a clock time past midnight.

Education & Grade Calculators

  • Attendance Calculator — Your attendance %, the classes needed to reach 75%, and how many classes you can bunk.
  • CGPA Calculator — SGPA to CGPA with credits, a semester-wise table, percentage and the SGPA you need next.
  • CGPA to Percentage Calculator — CGPA to percentage and back, using the official CBSE, VTU, AKTU, Anna University and SPPU rules.
  • Final Grade Calculator — The score you need on your final exam to reach an A, B, C or D in the class.
  • GPA Calculator — Weighted and unweighted GPA on a 4.0 scale, plus your new cumulative GPA.
  • Grade Calculator — Your weighted class grade and letter grade from scores in percent or points.
  • Marks Percentage Calculator — Overall and subject-wise percentage of marks, best-of-five and percentage to marks.

Everyday & Conversion Calculators

  • Concrete Calculator — Cubic yards, m³ and bag counts for slabs, footings, walls, post holes and steps.
  • Discount Calculator — Sale price, amount saved, stacked discounts, sales tax and reverse discounts with steps.
  • Dog Age Calculator — Dog years to human years by size, with the 2020 DNA-based formula and life stage.
  • Electricity Cost Calculator — Cost to run any appliance per hour, day, month and year from watts, hours and your rate.
  • Fuel Cost Calculator — Trip fuel cost from distance, mpg, km/L or L/100 km and price, split between passengers.
  • Password Generator — Random 8–128 character passwords made in your browser, with entropy and strength.
  • Roman Numeral Converter — Numbers to Roman numerals and back, with strict validation and a step-by-step breakdown.
  • Square Footage Calculator — Area in sq ft, m² and sq yd for rooms, L-shapes and whole houses, with flooring cost.
  • Temperature Converter — Fahrenheit, Celsius, Kelvin and Rankine with formulas and body, oven and weather charts.
  • Tip Calculator — Tip amount, total and each person's share, with round-up and pre-tax options.
  • Unit Converter — Length, weight, volume, area, temperature, speed, time, data, pressure, energy and fuel economy.

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