🧮 Useful Calculators
8 fast, accurate calculators for everyday finance and dates. Everything runs in your browser — your numbers never leave your device.
Free Online Calculators — Quick, Accurate & Private
Use these free online calculators for everyday finance and dates. Whether you need an EMI calculator, SIP calculator, GST calculator or an age calculator, every result is computed instantly in your browser — no sign-up, and your numbers never leave your device. They are mobile-friendly and tuned for the Indian context (rupee formatting, GST slabs and new tax-regime estimates).
EMI Calculator
Calculate your monthly loan EMI for home, car or personal loans. Enter the principal, annual interest rate and tenure to get the monthly installment, total interest and total payment, using the standard EMI formula P × r × (1+r)ⁿ ÷ ((1+r)ⁿ − 1).
SIP Calculator
Estimate the future value of monthly mutual fund SIP investments. Enter your monthly amount, expected annual return and period to see the invested amount, estimated returns and maturity value. Returns are market-linked and shown as estimates only.
Percentage Calculator
Three quick percentage calculations in one tool: find X% of Y, work out X is what % of Y, and calculate the percentage increase or decrease between two values. Great for discounts, marks and growth rates.
GST Calculator
Add or remove GST with the common Indian slabs (0%, 5%, 12%, 18%, 28%) pre-filled. Choose Add GST to apply GST to a base amount, or Remove GST to split the GST out of a tax-inclusive total.
Age Calculator
Find your exact age from your date of birth in years, months and days, plus totals in months, weeks, days, hours and minutes. Useful for forms, eligibility checks and anniversaries.
Date Difference Calculator
Measure the difference between two dates in days, weeks, months and years. Handy for project durations, deadlines and counting down to an event.
Salary / In-hand Calculator
Estimate your monthly in-hand salary from your annual CTC. It breaks down basic, HRA and allowances, deducts 12% employee PF and professional tax, and applies a simplified new-regime income-tax estimate with the standard deduction and 87A rebate.
Investment Return Calculator
Project the maturity value of a lumpsum investment using the compound interest formula A = P × (1 + r/n)^(n×t). Pick the compounding frequency — annual, quarterly, monthly or daily — to see your total gain.
After the numbers, try the developer tools or the coding playground for quick code experiments.
Frequently Asked Questions
Are these calculators free and private?
Yes, all 8 calculators are free and run 100% in your browser. Your inputs are never sent to or stored on any server.
How accurate are the results?
Results use standard financial formulas and are good estimates for planning. Actual bank or tax figures may differ based on terms, fees and the latest rules.
How is EMI calculated?
EMI = P × r × (1+r)ⁿ ÷ ((1+r)ⁿ − 1), where P is the loan amount, r is the monthly interest rate and n is the number of months. For a 0% rate it simply divides the principal by the months.
Is the SIP calculator return guaranteed?
No. Mutual fund SIP returns are market-linked and not guaranteed. The calculator shows an estimate based on the expected annual return you enter, to help you plan.
How does the GST calculator handle inclusive vs exclusive amounts?
Add GST applies the rate to a base (exclusive) amount to find the GST and total. Remove GST strips the GST back out of a tax-inclusive total to reveal the base amount and the GST portion.
Does the salary calculator include income tax?
It applies a simplified new-tax-regime estimate using the FY 2024-25 slabs, the ₹75,000 standard deduction, the 87A rebate and 4% cess, plus 12% employee PF and professional tax. Your actual in-hand may vary by employer and city.