Free Online Calculators — EMI, GST, BMI, Loan, Tax, SIP & 90+ Calculation Tools

Calculate Goods and Services Tax (GST) for any transaction — add or remove GST at 5%, 12%, 18%, or 28% rates. Instantly shows the taxable amount, GST amount, and final price including or excluding tax.

Calculate your Equated Monthly Installment (EMI) for any loan — enter loan amount, interest rate, and tenure to get exact monthly payment, total interest payable, and a full amortization schedule.

Plan your Systematic Investment Plan (SIP) and estimate the future value of monthly investments with compound growth. Shows invested amount, estimated returns, and total maturity corpus.

Calculate loan EMI payments, total interest cost, and complete repayment schedule for personal, business, or education loans. Supports both flat rate and reducing balance interest methods.

Calculate monthly EMIs for your car loan based on vehicle price, down payment, interest rate, and loan tenure. Helps you compare different loan offers before purchasing a vehicle.

Calculate your home loan EMI, total interest payable, and loan tenure breakdown. Includes a year-by-year amortization schedule showing principal and interest split for each payment.

Estimate your total monthly house payment including principal, interest, property taxes, and insurance (PITI). Helps you determine how much house you can afford before applying for a mortgage.

Estimate the maturity amount and interest earned on your Fixed Deposit. Supports quarterly, half-yearly, and annual compounding options across different bank interest rates.

Calculate the maturity amount and total interest earned on your Recurring Deposit (RD) based on monthly deposit, interest rate, and tenure. Useful for planning disciplined monthly savings.

Calculate your Public Provident Fund (PPF) maturity amount and interest earned over the 15-year lock-in period. Shows year-by-year balance growth with the current PPF interest rate.

Calculate your National Pension System (NPS) Tier-1 corpus at retirement age based on monthly contributions and expected returns. Shows lump sum withdrawal amount and estimated monthly pension.

Estimate total interest and maturity amount for your National Savings Certificate (NSC) over the 5-year tenure at current Post Office interest rates. Useful for Section 80C tax planning.

Calculate your accumulated Employee Provident Fund (EPF) corpus at retirement. Enter your basic salary, years of service, and current EPF balance to estimate your total retirement fund.

Calculate the maturity value of your Sukanya Samriddhi Yojana (SSY) account after 21 years based on annual contribution and current interest rate. Designed for parents saving for their daughter's future.

Calculate the monthly contribution required under Atal Pension Yojana (APY) to receive a guaranteed pension of ₹1,000 to ₹5,000 per month after retirement. Based on your age and pension goal.

Calculate quarterly interest payouts and total return on your Senior Citizen Savings Scheme (SCSS) investment. Best suited for retirees looking for a safe, high-interest government-backed savings option.

Estimate the gratuity amount you will receive upon leaving a job after 5 or more years of service, using the standard 15/26 formula. Enter your last drawn salary and years of service.

Calculate the future value of your monthly savings and initial deposit with compound interest. Helps you visualize how consistent saving grows over time with different interest rates and periods.

Calculate the final portfolio value and total withdrawals from your mutual fund investment using a Systematic Withdrawal Plan (SWP). Useful for planning regular income in retirement.

Calculate the Compound Annual Growth Rate (CAGR) of any investment to understand its true annualized return. Enter initial value, final value, and number of years to get an accurate growth rate.

Calculate the taxable and tax-exempt portion of your House Rent Allowance (HRA) as per Indian Income Tax rules. Helps salaried employees determine the exact HRA exemption they can claim.

Estimate your income tax liability under the old and new tax regime based on your salary, deductions, and exemptions. Helps you compare which regime is more beneficial for your income bracket.

Calculate income tax on your salary with detailed breakdowns including TDS, allowances, deductions, and net take-home pay. Useful for salaried employees verifying their monthly tax deductions.

Find the final price after applying discounts, offers, or cashback on any product or service. Also calculates the discount percentage from original and sale price — great for shopping comparisons.

Calculate simple and compound interest on loans, savings, or investments using flexible compounding frequencies such as daily, monthly, quarterly, or annually. Instantly view interest earned, total payable amount, and how your money grows over time.

Analyze profits or losses for products or services by entering cost price, selling price, and quantity. Calculates gross margin, profit percentage, and break-even point for business decisions.

Calculate revised salaries for government employees under the 8th Pay Commission guidelines. Enter your current pay band and grade pay to get the estimated revised basic pay and allowances.

Calculate the area of various geometric shapes — rectangles, circles, triangles, trapezoids, and more. Useful for construction, interior design, land measurement, and school math problems.

Determine the weight of metals such as steel, aluminum, copper, and iron based on dimensions and material type. Essential for engineers, fabricators, and construction professionals estimating material costs.

Compute any base number raised to the power of an exponent — handles large and small exponents, negative bases, and fractional powers. Useful for math, science, and engineering calculations.

Compare the long-term financial outcome of renting versus buying a home over a specific time period. Factors in down payment, mortgage costs, maintenance, appreciation, and opportunity cost of capital.

A full-featured scientific calculator with trigonometric, logarithmic, and algebraic functions — plus a hidden private notes section for storing sensitive information discreetly.

Calculate Mean Time Between Failures (MTBF) and Mean Time To Repair (MTTR) for equipment reliability analysis. Essential for maintenance engineers, operations teams, and IT infrastructure planning.

Calculate your exact age in years, months, days, hours, and minutes from your date of birth. Also calculates the number of days until your next birthday and day of the week you were born.

Measure your Body Mass Index (BMI) to assess whether you're underweight, normal weight, overweight, or obese based on your height and weight. Supports both metric and imperial units.

Calculate exactly how many calories you need daily to lose weight, maintain weight, or build muscle based on your age, gender, height, weight, and activity level using the Mifflin-St Jeor equation.

Calculate how many calories you burn during 100+ activities including walking, running, swimming, cycling, yoga, and strength training based on your body weight and exercise duration.

Convert your daily step count into estimated calories burned based on your weight and stride length. Helps you understand how much energy your daily walking or running contributes to your fitness goals.

Calculate your estimated Glomerular Filtration Rate (eGFR) using the CKD-EPI equation to assess kidney function and determine your chronic kidney disease (CKD) stage based on serum creatinine levels.

Calculate Creatinine Clearance (CrCl) using the Cockcroft-Gault equation for accurate drug dosing in patients with renal impairment. Used by pharmacists and clinicians to adjust medication doses safely.

Generate a Basal Body Temperature (BBT) fertility chart to identify your most fertile window for conception. Log daily temperatures to detect ovulation patterns over your menstrual cycle.

Calculate your recommended daily protein intake based on body weight, activity level, and fitness goals — whether you're trying to lose fat, maintain weight, or build muscle mass.

Calculate your recommended daily dietary fiber intake based on age, gender, activity level, and health goals. Helps you plan meals to meet fiber requirements for digestive health and disease prevention.

Calculate your recommended daily sugar intake limit and compare it against WHO guidelines. Helps diabetics and health-conscious individuals track and manage sugar consumption to reduce health risks.

Create your personalized intermittent fasting schedule based on popular fasting protocols — 16:8, 18:6, 5:2, and OMAD. Shows your eating window, fasting window, and when to start and break your fast.

Convert your HbA1c percentage to Estimated Average Glucose (eAG) in mg/dL or mmol/L. Understand your 3-month average blood sugar level and diabetes management status instantly.

Calculate Body Surface Area (BSA) using the Mosteller or Du Bois formula for accurate chemotherapy drug dosing, burn assessment, and clinical calculations based on height and weight.

Estimate your VO2 Max (maximal oxygen uptake) using your resting heart rate or the 1-Mile Walk Test. Measures cardiovascular fitness level and compares it to age and gender norms.

Calculate your target heart rate zones for fat burning, aerobic endurance, and high-intensity cardio training based on your age and resting heart rate. Optimizes workout intensity for fitness goals.

Check your blood pressure category instantly using an AHA-compliant chart. Enter your systolic and diastolic readings to understand if your BP is Normal, Elevated, Stage 1, or Stage 2 hypertension.

Calculate your Total Cholesterol to HDL ratio from lipid panel results to assess cardiovascular disease risk. A ratio below 5 is considered acceptable; below 3.5 is optimal for heart health.

Calculate Mean Arterial Pressure (MAP) from systolic and diastolic blood pressure readings. Used in ICU and critical care settings to monitor organ perfusion and assess hemodynamic stability.

Determine your body fat percentage, fat mass, and lean muscle mass using the US Navy formula. Shows your body composition category and ideal body fat range based on age and gender.

Calculate your Lean Body Mass (LBM) — the weight of everything in your body except fat, including muscles, bones, organs, and water. Useful for setting accurate protein intake and fitness targets.

Calculate your recommended daily water intake based on body weight, activity level, and climate. Prevents dehydration and supports metabolism, digestion, and overall health.

Calculate your optimal daily macronutrient intake — protein, carbohydrates, and fats — based on your calorie goal and fitness objective (weight loss, maintenance, or muscle gain).

Calculate your BMR — the number of calories your body burns at rest to maintain basic functions. Uses the Mifflin-St Jeor formula and adjusts for activity level to give your daily calorie needs (TDEE).

Estimate your Blood Alcohol Content (BAC) level based on number of drinks, body weight, gender, and time elapsed. Helps you make safer decisions about driving after alcohol consumption.

Calculate your Ideal Body Weight (IBW) using 4 medically accepted formulas — Hamwi, Devine, Robinson, and Miller. Commonly used for clinical drug dosing and setting realistic weight goals.

Calculate your Total Daily Energy Expenditure (TDEE) — the exact number of calories you burn per day based on your BMR and physical activity level. Sets a baseline for any diet or fitness plan.

Calculate your estimated pregnancy due date (EDD) based on your last menstrual period (LMP) or conception date using Naegele's rule. Also shows your current week of pregnancy and trimester.

Plan your weight loss journey with a calorie deficit calculator. Enter your current weight, goal weight, and timeline to get a daily calorie target and estimated date to reach your goal.

Calculate your Waist-to-Hip Ratio (WHR) to assess body fat distribution and associated health risks. A WHR above 0.90 in men and 0.85 in women indicates higher risk for cardiovascular disease.

Calculate your Waist-to-Height Ratio (WHtR) to assess risk of lifestyle-related diseases like diabetes and heart disease. A ratio above 0.5 indicates elevated risk regardless of BMI category.

Calculate the best time to sleep or wake up based on your natural 90-minute sleep cycles. Waking up at the end of a cycle instead of mid-cycle prevents grogginess and helps you feel energized.

Create a personalized vaccination schedule for your baby based on birth date. Shows due dates for Hep B, DTaP, MMR, Polio, Varicella, and all other recommended childhood vaccines with reminders.

Assess your current stress level using the Perceived Stress Scale (PSS) — a validated psychological tool. Get instant results with stress category and practical stress management recommendations.

Calculate your estimated ovulation date and most fertile days based on your last menstrual period and average cycle length. Helps couples planning pregnancy identify the best days to conceive.

Calculate your baby's growth percentiles for weight, height, and head circumference based on WHO child growth standards. Helps parents and pediatricians track healthy developmental milestones.

Calculate your current pregnancy trimester, exact weeks pregnant, and key milestone dates. Shows trimester boundaries, expected due date, and upcoming prenatal care milestones based on your LMP.

Calculate your exact 6-day fertile window — the 5 days before ovulation plus the day of ovulation. Understanding when sperm viability meets ovulation maximizes your chances of conception.

Accurately predict your next period date, ovulation window, and fertile days based on your last period and average cycle length. Tracks up to 12 months of future cycle dates.

Find out the fun compatibility score between you and your partner based on your names. A lighthearted entertainment tool based on name numerology — not a scientific assessment, but always a conversation starter.

Plan your retirement savings and estimate how much you'll need at retirement. Enter your current savings, monthly contribution, expected return, and retirement age to see if you're on track.

Calculate your Cumulative Grade Point Average (CGPA) across all semesters by entering grades and credit hours for each course. Also converts CGPA to percentage and letter grade equivalents.

Calculate your semester Grade Point Average by entering your course grades, credit hours, and grading scale. Supports 4.0, 5.0, and 10.0 GPA scales used by universities worldwide.

Calculate your exam percentage from marks obtained and total marks. Also works in reverse — enter a percentage to find the minimum marks needed to achieve that score in any exam.

Calculate the exact scores you need on remaining assignments or exams to achieve your target grade for the semester. Enter your current scores and weightings to see exactly what you need to score.

Predict your final course grade based on current performance and remaining assessments. Helps students plan study effort strategically to achieve desired academic outcomes before final exams.

Track and calculate your class attendance percentage to ensure you meet the minimum 75% attendance requirement. Shows exactly how many more classes you can miss or must attend to stay eligible.

Plan your course credit load to balance your academic workload and map out graduation pathways. Helps students avoid overloading by distributing credits optimally across semesters.

Estimate your eligibility for financial aid, scholarships, and education grants based on family income, assets, and enrollment status. Helps students plan education financing before applying.

Track and manage your daily study hours by subject or topic for better academic productivity. Helps students identify time allocation gaps and optimize study schedules for exams.

Calculate your total marks and overall percentage across multiple subjects or exams. Useful for board exam results, competitive exam analysis, and tracking academic progress over time.

Plan and track your course progress, grades, and completion status throughout the semester. Helps students stay on top of multiple courses and visualize how current performance affects final grades.

Balance your course load to optimize academic performance, manage study time efficiently, reduce stress, and plan subjects for a more productive and organized semester schedule.

Plan how many future semesters and what GPA you need to raise your cumulative GPA to a target level. Gives students a realistic roadmap for academic recovery or honors achievement.

Calculate grade points for individual courses by entering letter grades and credit hours. Useful for verifying transcript calculations and understanding how each course contributes to your overall GPA.

Convert your grades between different grading scales — percentage to letter grade, 4.0 GPA scale to 10-point scale, or international grade conversions for study abroad applications.

Calculate weighted grades for courses where different assignments carry different weight — exams, quizzes, projects, and participation. Shows your true weighted average based on each component's contribution.

Plan your entire semester with course schedules, assignment deadlines, and academic goals in one organized tool. Helps students set priorities and manage time effectively from day one of the semester.

Manage your study sessions with timed work and break intervals using the Pomodoro technique or custom intervals. Prevents burnout and improves focus and retention during long study sessions.