Free Online Calculators for Students – Age, Percentage, CGPA, BMI & More
Calculator Mitra is a free online calculator website for students and daily use. Easily calculate age, percentage, marks, CGPA to percentage, BMI, and date difference using fast, accurate and mobile-friendly tools.
Try tools like Age Calculator, Percentage Calculator, CGPA Converter, BMI Calculator
All-in-One Free Online Calculators
Use student calculators and daily tools instantly. No signup, no confusion, fully mobile friendly.
Age Calculator
Calculate exact age in years, months and days from date of birth.
Percentage Calculator
Find percentage value quickly for exams, marks and daily use.
Marks to Percentage
Convert obtained marks into percentage using total marks.
CGPA to Percentage
Convert CGPA into percentage with a simple common formula.
BMI Calculator
Check Body Mass Index using height and weight values.
Date Difference
Calculate days, months and years between two dates.
Interest Calculator
Compare Simple Interest and Compound Interest easily.
Height Converter
Convert cm into feet & inches easily.
Age Calculator
Percentage Calculator
Marks to Percentage Calculator
CGPA to Percentage Calculator
BMI Calculator
Date Difference Calculator
Simple vs Compound Interest
Height Converter (cm → ft & inch)
Basic Resume Builder Online
Create a simple resume preview for students and job seekers. Fill details and generate instantly.
Resume Builder
Why Use Calculator Mitra?
Calculator Mitra is designed for speed, accuracy and easy use on mobile and desktop.
Fast Results
Get instant answers for common calculations without installing any app.
Student Friendly
Tools like marks percentage, CGPA converter and resume builder are helpful for students.
Simple Design
Clean interface, readable layout and mobile-first experience for everyone.
Frequently Asked Questions
Is Calculator Mitra free?
Yes, Calculator Mitra provides free online calculators and student tools.
Which calculators are available?
You can use age calculator, percentage calculator, marks to percentage, CGPA converter, BMI calculator, date difference and basic resume builder.
Can I use it on mobile?
Yes, the website is fully responsive and works smoothly on mobile, tablet and desktop.