🧮 Free Online Calculators Tools
Free online calculators — EMI, BMI, age, percentage, GST, SIP, loan, calorie, and more. Instant results, no signup.
74 tools available · 100% free · No signup required
Age Calculator
Age Calculator finds your exact age in years, months, and days online for free. Calculate age from date of birth instantly.
EMI Calculator
EMI Calculator computes EMI for home loan, car loan, or personal loan online for free. Get a monthly instalment breakdown.
BMI Calculator
BMI Calculator computes your Body Mass Index (BMI) online for free. Find out if you are underweight, normal, or overweight.
Percentage Calculator
Percentage Calculator computes percentages online for free. Find percentage of a number, percentage change, and more.
GST Calculator
GST Calculator computes GST online for free. Find GST inclusive and exclusive amounts for Indian tax rates.
SIP Calculator
SIP Calculator computes SIP returns online for free. Find out how much your monthly SIP investment will grow.
Discount Calculator
Discount Calculator finds discounts and sale prices online for free. Calculate the final price after applying any percentage discount.
Loan Calculator
Loan Calculator computes loan EMI, total interest, and repayment schedule online for free. Plan your loan repayments.
Scientific Calculator
Scientific calculator online for free. Perform advanced math calculations with trigonometry, logarithms, and more.
Calorie Calculator
Calculate daily calorie needs online for free. Find out how many calories you need to maintain, lose, or gain weight.
BMR Calculator
BMR Calculator finds your Basal Metabolic Rate online for free. Calculate how many calories your body burns at rest each day.
Body Fat Calculator
Calculate body fat percentage online for free using US Navy method. Track your fitness progress.
CAGR Calculator
Calculate Compound Annual Growth Rate (CAGR) online for free. Measure investment returns accurately.
Fuel Cost Calculator
Calculate fuel cost for your trip online for free. Estimate petrol/diesel expenses based on distance and mileage.
Tip Calculator
Tip Calculator works out the tip amount and splits the bill per person online for free. Set any tip percentage and number of people instantly.
Date Difference Calculator
Date Difference Calculator finds the exact days, weeks, months, and years between two dates online for free. Count days between dates instantly.
Percentage Change Calculator
Percentage Change Calculator finds the percent increase or decrease between two numbers online for free. Calculate percentage change instantly.
Compound Interest Calculator
Compound Interest Calculator shows how your money grows with compounding online for free. Calculate maturity value, interest, and growth instantly.
Simple Interest Calculator
Simple Interest Calculator computes interest and total amount on a principal online for free. Calculate simple interest with the SI formula instantly.
GPA Calculator
GPA Calculator computes your grade point average from course grades and credits online for free. Calculate semester and cumulative GPA instantly.
Countdown Timer
Countdown Timer counts down to any date and time online for free. Set a target and watch the live days, hours, minutes, and seconds in your browser.
Love Calculator
Love Calculator finds a fun love compatibility percentage between two names online for free. A lighthearted name match game in your browser.
Mortgage Calculator
Mortgage Calculator computes your monthly home loan payment, total interest, and total cost online for free. Plan your mortgage instantly in your browser.
PPF Calculator
PPF Calculator estimates your Public Provident Fund maturity value and interest online for free. Plan yearly PPF investments instantly in your browser.
FD Calculator
FD Calculator estimates your fixed deposit maturity value and interest online for free. Compute FD returns with compounding instantly in your browser.
RD Calculator
RD Calculator estimates your recurring deposit maturity value and interest online for free. Compute RD returns from monthly deposits in your browser.
Retirement Calculator
Retirement Calculator estimates your retirement corpus from current savings and monthly contributions online for free. Plan your retirement in your browser.
Ideal Weight Calculator
Ideal Weight Calculator estimates healthy weight ranges from height and gender online for free. See multiple formulas at once in your browser.
Water Intake Calculator
Water Intake Calculator estimates how much water you should drink daily based on weight and activity online for free. Stay hydrated with a personal target.
Running Pace Calculator
Running Pace Calculator computes pace, speed, time, or distance for any run online for free. Plan training and race goals in your browser.
Aspect Ratio Calculator
Aspect Ratio Calculator computes the aspect ratio and scales dimensions proportionally online for free. Resize images and videos correctly in your browser.
Average Calculator
Average Calculator computes the mean, median, mode, and range of a set of numbers online for free. Analyze data statistics instantly in your browser.
Salary to Hourly Calculator
Salary to Hourly Calculator converts annual salary to hourly rate and back online for free. Compare pay rates instantly in your browser.
Days Until Date Calculator
Days Until Date Calculator counts how many days remain until a future date online for free. Countdown to events and deadlines in your browser.
Business Days Calculator
Business Days Calculator counts working days between two dates (excluding weekends) online for free. Plan deadlines in your browser.
Profit Margin Calculator
Profit Margin Calculator finds your profit margin percentage, gross profit, and markup from revenue and cost online for free.
ROI Calculator
ROI Calculator finds your return on investment percentage and net profit from the amount invested and the final value online for free.
Break-Even Calculator
Break-Even Calculator finds how many units you must sell to cover costs, using fixed costs, price, and variable cost online for free.
Inflation Calculator
Inflation Calculator shows the future cost of money and its shrinking purchasing power over time at a given inflation rate online for free.
Salary Hike Calculator
Salary Hike Calculator finds your new salary after a percentage hike, or the hike percentage between two salaries, online for free.
Gratuity Calculator
Gratuity Calculator estimates your gratuity payout using last drawn salary and years of service under the Indian 15/26 formula, online for free.
HRA Calculator
HRA Calculator finds your tax-exempt House Rent Allowance under Section 10(13A) using salary, HRA received, rent paid, and city type, online for free.
Sales Tax Calculator
Sales Tax Calculator adds or removes sales tax or GST from a price and shows the tax amount and total, online for free.
Margin & Markup Calculator
Margin & Markup Calculator compares profit margin and markup percentages from cost and revenue, showing gross profit, online for free.
Down Payment Calculator
Down Payment Calculator finds your down payment amount and the loan needed from a price and down payment percentage, online for free.
Square Footage Calculator
Square Footage Calculator finds the area of a room or floor in square feet and square meters, with optional cost, online for free.
Paint Calculator
Paint Calculator estimates how many litres of paint you need for a room based on wall area, number of coats, and coverage online for free.
Tile Calculator
Tile Calculator finds how many tiles you need for a floor or wall, including wastage, from room size and tile size online for free.
Concrete Calculator
Concrete Calculator finds the volume of concrete needed for a slab in cubic metres, cubic feet, and yards, plus cement bags, online for free.
Gravel Calculator
Gravel Calculator finds how much gravel, sand, or crushed stone you need by volume and weight in tonnes, using density constants, online for free.
Rent Split Calculator
Rent Split Calculator divides rent between roommates equally or by room size, showing each person's share instantly online for free.
Depreciation Calculator
Depreciation Calculator finds asset depreciation using straight-line or declining balance methods, with a full yearly schedule, online for free.
Ratio Calculator
Ratio Calculator solves proportions and simplifies ratios, finding the missing value in A:B = C:D instantly online for free.
Standard Deviation Calculator
Standard Deviation Calculator finds population or sample standard deviation, variance, mean, and range from a list of numbers online for free.
Income Tax Calculator
Income Tax Calculator estimates your India income tax under the new and old regimes online for free. Enter income and deductions to compare tax with 4% cess.
Car Loan EMI Calculator
Car Loan EMI Calculator finds your monthly car loan payment online for free. Enter loan amount, interest rate, and tenure to get EMI, total interest, and total cost.
Credit Card Payoff Calculator
Credit Card Payoff Calculator shows how long to clear your card balance online for free. Enter balance, APR, and monthly payment to get months and total interest.
Savings Goal Calculator
Savings Goal Calculator finds the monthly deposit needed to reach a target online for free. Enter goal amount, timeframe, and interest rate to get your monthly saving.
Net Worth Calculator
Net Worth Calculator totals your assets minus liabilities online for free. Add multiple assets and debts to instantly see your net worth and financial position.
Overtime Pay Calculator
Overtime Pay Calculator finds your total pay with overtime online for free. Enter regular hours, rate, overtime hours, and multiplier to get regular, OT, and total pay.
EPF Calculator
EPF Calculator estimates your Employees Provident Fund maturity online for free. Enter salary, contribution rate, interest, and age to project your retirement corpus.
TDS Calculator
TDS Calculator estimates tax deducted at source by section online for free. Choose the TDS section, enter the amount, and get the TDS and net payable instantly.
Amortization Schedule Calculator
Build a full month-by-month loan amortization schedule with interest and principal split, then add extra payments to see months and interest saved. Runs in your browser.
APR Calculator
Work out the real APR on a loan once processing fees, insurance and charges are counted. Shows both nominal and effective APR beside the rate your lender quoted.
Debt Payoff Calculator
Compare the debt snowball and debt avalanche side by side on your own balances. See months to payoff, total interest and the payoff order for each strategy.
Take-Home Salary Calculator
Take-Home Salary Calculator turns your CTC into monthly in-hand pay for AY 2026-27. Compares the new and old tax regimes side by side and names the cheaper one.
Home Affordability Calculator
Home Affordability Calculator shows the loan and property price your income supports using the bank FOIR rule, plus the stamp duty and down payment cash you need up front.
Stamp Duty Calculator
Stamp Duty Calculator estimates property registration costs across 19 Indian states with female and joint-owner rebates, urban and rural rates, cess and transfer duty.
NPS Calculator
Project your National Pension System corpus at 60, then see the tax-free lump sum, the annuity corpus and the monthly pension it buys. Runs entirely in your browser.
SWP Calculator
Find out exactly how many months your corpus survives a monthly Systematic Withdrawal Plan, or how much you can safely withdraw for a fixed number of years. Nothing leaves your browser.
Lumpsum Calculator
Work out what a one-time investment grows to, with the compounding frequency you choose — and the inflation-adjusted real value most calculators leave out. All maths runs in your browser.
Budget Calculator
Split your monthly take-home pay into needs, wants and savings using the 50/30/20 rule, then add category rows to see which bucket is over budget and by how much.
Time Card Calculator
Total a weekly or bi-weekly time card from clock in, clock out and unpaid breaks. Handles overnight shifts, flags missing punches, and offers exact or 5, 6 and 15-minute rounding.
Unit Price Comparison Calculator
Compare up to eight grocery options on price per kg, litre or piece. Handles mixed units and multi-packs, highlights the cheapest, and shows how much cheaper it is than the runner-up.
Money and health decisions are easier when you can see the numbers. These calculators answer the questions people actually search for: what will my loan EMI be, how much will my SIP grow, what is my BMI, how much GST applies to this amount, or exactly how old someone is to the day. Each one shows the result instantly and, where it helps, explains how the figure was reached so the number is useful rather than mysterious. With over 60 calculators covering finance, health, percentages, and everyday arithmetic, this is the section people come back to most often — because real decisions need real numbers, not guesswork.
Plan before you commit
Before signing a loan, run the EMI calculator with different tenures to see how the monthly payment and total interest change — a longer tenure lowers the EMI but costs more overall. Before starting an investment, use the SIP calculator to set realistic expectations. These tools are designed to help you compare scenarios, not just produce a single number. The same approach works for GST, where you can switch between inclusive and exclusive calculations to understand exactly what the buyer pays versus what the seller receives. Financial planning becomes concrete when you can adjust one variable at a time and watch the outcome shift.
Estimates, not professional advice
Financial and health calculators use standard formulas and the inputs you provide. They are excellent for planning and comparison, but they cannot account for every personal circumstance, tax rule, or medical factor. Treat the results as a well-informed estimate, and consult a qualified professional before making a major financial or health decision. The formulas behind each calculator are documented openly, and wherever a standard is used — such as the Harris-Benedict equation for BMR or the reducing-balance method for EMI — the tool names it so you can verify the approach independently.