Calculators
8 free calculators for everyday math, finance, and school
This hub brings together the calculators people reach for most often — working out an exact age, checking a loan's monthly EMI, applying a discount at checkout, or converting a GPA between scales. Every calculation runs instantly in your browser, so there's nothing to install and nothing to wait for.
🧮 All Calculators
Pick a tool below — every calculator opens instantly, no sign-up required.
Age Calculator
Find your exact age in years, months, and days from your date of birth.
Open Tool →Discount Calculator
Calculate the final price and amount saved after applying a percentage discount.
Open Tool →EMI Calculator
Work out your monthly loan installment from principal, interest rate, and tenure.
Open Tool →GPA / CGPA Calculator
Calculate your GPA or CGPA from individual course grades and credit hours.
Open Tool →Margin Calculator
Calculate profit margin, markup, and selling price from cost and revenue.
Open Tool →Percentage Calculator
Solve percentage increases, decreases, and of-a-number calculations instantly.
Open Tool →Salary Calculator
Convert between hourly, monthly, and annual salary figures.
Open Tool →Scientific Calculator
A full scientific calculator with trigonometric, log, and exponential functions.
Open Tool →No tools match your search. Try a different word.
Why Use Browser-Based Calculators?
A quick calculation shouldn't require digging through a spreadsheet or downloading an app you'll only use once. EverydayTools' calculators are purpose-built for single tasks, so you get a clear answer in seconds.
Every input and result stays on your device — nothing you type into these calculators is transmitted or stored on a server, making them a safe choice for personal finance figures as well as everyday math.
Frequently Asked Questions
Yes, every calculator in this hub is completely free, with no sign-up and no daily usage limits.
No. All calculations run locally in your browser, so figures like salary or loan amounts are never sent to a server.
It uses the standard reducing-balance EMI formula, so results match what most banks and lenders calculate for a given rate and tenure.
Yes, every calculator is fully responsive and works smoothly on phones, tablets, and desktops.