Free Online Calculators
Simple, fast and accurate calculators for everyday decisions.
No sign-up. Nothing you type is ever sent to a server.
Popular calculators
View allNormal Calculator
A fast, full-screen basic calculator with keyboard support and local history.
SIP Calculator
Project SIP growth with step-up, inflation adjustment and goal planning.
Percentage Calculator
Find X% of Y, what percentage X is of Y, and percentage change.
Age Calculator
Calculate exact age in years, months and days from a date of birth.
EMI Calculator
Work out monthly loan EMI, total interest and a year-wise repayment schedule.
Browse by category
Math
Core arithmetic and percentage tools for quick, everyday math.
6 calculators
Finance
Plan investments, loans and repayments with India-first defaults.
8 calculators
Everyday
Dates, ages and other calculations you reach for often.
5 calculators
Construction
Material and cost estimators for home and building projects.
2 calculators
Why use our calculators
Instant results
Every calculator runs in your browser — no waiting on a server, no loading spinner.
Nothing you enter leaves your device
Your inputs are never sent anywhere. Calculations happen locally, every time.
No account, ever
Open a calculator and start using it. No sign-up, no email, no paywall.
Coming soon
We’re adding new calculators regularly. Here’s what’s next.
RD Calculator
Calculate recurring deposit maturity value from monthly deposit, rate and tenure.
Simple Interest Calculator
Calculate simple interest on a loan or deposit, without compounding.
Paint Calculator
Estimate how much paint you need for a room based on wall area and coats.
GPA Calculator
Calculate your GPA from course grades and credit hours.
Frequently asked questions
Are these calculators free to use?
Yes, every calculator on this site is completely free, with no sign-up or hidden limits.
Is my data stored or shared with anyone?
No. All calculations happen locally in your browser. Nothing you type into a calculator is sent to a server or stored by us.
Can I suggest a new calculator?
Yes — reach out through the Contact page and we'll consider it for the roadmap.
Are the financial calculators (SIP, EMI) a substitute for professional advice?
No. They are educational planning tools based on the assumptions you enter, not personalised financial or investment advice.