Online calculators
Quick answers for everyday numbers: loan EMIs and mortgages, simple and compound interest, percentages and discounts, GST and VAT, tips, BMI and calorie needs, age and date differences, GPA, fractions and scientific maths.
Results update as you type, and everything runs in your browser — handy for checking a quote, a payslip or a homework answer.
All 24 tools
- Percentage CalculatorEvery percentage calculation with the formula and working shown.
- Age CalculatorExact age, totals, next birthday, zodiac and milestones, or the age difference of two people.
- BMI CalculatorBMI with WHO or Asian categories, healthy weight range and body-fat estimate.
- EMI CalculatorCalculate loan EMI, interest, prepayment savings and the full amortization schedule.
- Mortgage CalculatorMortgage payment with tax, insurance, PMI, HOA, extra payments and amortization.
- Compound Interest CalculatorCompound interest with monthly deposits, step-up, inflation, tax and goal planning.
- Simple Interest CalculatorSimple interest with principal, rate and time solving, dates and compound comparison.
- GST CalculatorAdd or remove GST with CGST/SGST/IGST split and multi-item invoice totals.
- Discount CalculatorSale price and savings with stacked discounts, tax and buy-X-get-Y deals.
- Calorie CalculatorDaily calories to lose, maintain or gain weight with BMR, TDEE and macros.
- Scientific CalculatorFull scientific calculator with trig, logs, powers, memory, history and fractions.
- Fraction CalculatorCalculate with fractions and mixed numbers exactly, simplify, convert and compare.
- Average CalculatorMean, median, mode, standard deviation, quartiles and weighted averages.
- GPA CalculatorConvert percentage, GPA and CGPA, and calculate semester and cumulative GPA.
- Tip CalculatorCalculate the tip, total and amount per person with splitting and rounding.
- GST / VAT / TaxAdd or remove VAT, GST or sales tax with country presets and invoices.
- Date DifferenceDays between two dates, working days with holidays, and adding or subtracting dates.
- Percentage Change CalculatorPercentage change between values, reverse change and a series with CAGR.
- CGPA to Percentage CalculatorConvert CGPA to percentage with CBSE, VTU, AKTU and Mumbai University formulas.
- FD & RD CalculatorCalculate FD and RD maturity with any compounding and tenure, before and after tax.
- Income Tax Calculator (India)Compare India's new and old tax regimes with a full computation and monthly TDS.
- PPF CalculatorCalculate PPF maturity with extensions and a year-by-year interest and balance table.
- SIP CalculatorCalculate SIP returns with step-up, lump sum, goal planning and inflation.
- Statistics CalculatorDescriptive statistics, t-tests, p-values, regression, ANOVA and chi-square.