Free, fast, and beautifully simple tools for grades, tips, percentages, loans, and passwords.
For teachers and students. Enter number of questions and instantly see the full grading scale.
Calculate the perfect tip for any bill, split evenly between any number of people.
Convert fractions to percentages instantly. See a full comparison table of similar values.
Calculate monthly payments, total interest, and total payable amount for any loan.
Generate strong, secure passwords instantly. Customize length and character types.
Enter the total number of questions and the number answered correctly to get the percentage and letter grade.
| Correct | Score / Total | Percentage | Grade |
|---|
Enter your bill amount, tip percentage, and number of people to split the bill.
Enter a numerator and denominator to convert a fraction to a percentage.
Enter your loan amount, interest rate, and term to see your monthly payment and total cost.
Create secure, random passwords. Customize length and character types.
EasyCalculator offers a suite of free, browser-based tools designed for students, teachers, diners, borrowers, and anyone who needs a quick and reliable answer. No account required, no ads interrupting your workflow — just clean, instant calculations that work on any device.
Our free grade calculator lets teachers instantly generate a complete grading scale for any number of questions. Students can enter their correct answers to see their percentage score and letter grade (A, B, C, D, or F) in seconds. Whether you scored 17/20, 45/50, or 88/100, the tool gives you the exact percentage and the matching letter grade based on a standard 10-point scale.
Wondering how much to tip at a restaurant? Our tip calculator handles any bill amount, any tip percentage, and any number of people splitting the check. Simply enter your bill total, choose a tip rate (15%, 18%, 20% or custom), and the number of people — it instantly shows the tip amount, total bill, and per-person share. Perfect for group dinners, delivery orders, and travel.
Convert any number to a percentage in one click. Enter a part and a whole — for example 36 out of 50 — and the calculator instantly shows 72%. It also generates a comparison table of nearby values, so you can see how 35/50, 37/50, and surrounding scores compare. Ideal for test scores, survey results, discounts, and data analysis.
Planning a loan? Our loan calculator uses the standard amortization formula to compute your exact monthly payment, total interest paid, and total amount payable over the life of the loan. Works for personal loans, car loans, student loans, and mortgage estimates. Enter the principal amount, annual interest rate, and loan term in years — results appear instantly.
Create cryptographically random, strong passwords up to 64 characters long. Choose from uppercase letters, lowercase letters, numbers, and special symbols. The tool shows a real-time password strength meter and lets you copy to clipboard instantly. No passwords are stored, logged, or transmitted — everything happens locally in your browser for maximum security.
All tools are 100% free, require no sign-up, and work entirely in your browser with no data sent to any server. Pages load instantly and work offline after the first visit. Designed to be mobile-friendly, accessible, and distraction-free — so you can get your answer and move on.
Divide the number of correct answers by the total number of questions, then multiply by 100. For example, 17 correct out of 20 total = (17 ÷ 20) × 100 = 85%, which is a B. Use our Grade Calculator above to get instant results for any score.
The standard tip in the United States is 15–20% of the pre-tax bill. Tip 15% for satisfactory service, 18% for good service, and 20% or more for excellent service. For large groups, many restaurants automatically add an 18% gratuity.
Monthly payment is calculated using the amortization formula: M = P × [r(1+r)^n] / [(1+r)^n − 1], where P is the principal loan amount, r is the monthly interest rate (annual rate ÷ 12), and n is the total number of monthly payments (years × 12). Our loan calculator handles this automatically.
A strong password is at least 12–16 characters long and includes a mix of uppercase letters, lowercase letters, numbers, and special symbols. It should not contain dictionary words, your name, or easily guessable sequences. Use our Password Generator to create a secure password instantly.
Yes — all calculators on EasyCalculator are completely free with no sign-up, no account, and no hidden fees. They run entirely in your browser, so your data never leaves your device.
EasyCalculator provides free tools including a grade calculator, tip calculator, percentage calculator, loan payment calculator, and password generator. All tools are free, private, and work on desktop and mobile browsers. Bookmark this page for quick access anytime you need a fast, reliable calculation.