Free Online Calculators for Everyday Calculations
MiniToolLab offers 100+ free calculators for finance, salary, health, exams, CGPA, astrology and everyday maths — every tool shows its formula, a worked example and FAQs, works on mobile, and needs no signup.
Popular searches: TDEE Calculator · Loan EMI Calculator · CGPA to Marks Calculator · In-Hand Salary Calculator · JEE Main Score Calculator
Popular Calculators
- TDEE Calculator — Estimate your daily calorie needs from age, weight, height and activity.
- Loan EMI Calculator — Work out your monthly loan instalment, interest and total repayment.
- BMR Calculator — Find the calories your body burns at rest each day.
- In-Hand Salary Calculator — Estimate your take-home pay after common deductions.
- Sukanya Calculator — Estimate maturity for a Sukanya Samriddhi account.
- CGPA to Marks Calculator — Convert CGPA into marks and percentage quickly.
- JEE Main Score Calculator — Estimate your JEE Main score from correct and incorrect answers.
- GATE Score Calculator — Estimate your GATE score from your responses.
- Attendance Calculator — Calculate your attendance percentage and classes needed.
- Marks Percentage Calculator — Turn marks obtained and total marks into a percentage.
- Birth Date Calculator — Work out age and dates from a birth date.
- XIRR Calculator — Calculate the annualised return on irregular investments.
Browse Calculators by Category
Finance & Salary
- In-Hand Salary Calculator
- HRA Calculator
- Sukanya Calculator
- SCSS Calculator
- RD Interest Calculator
- 7th Pay Salary Calculator
- 8th CPC Salary Calculator
- 8th Pay Fitment Calculator
- 8th Pay Pension Calculator
- BPSC Teacher Salary Calculator
- XIRR Calculator
- VAT Calculator
- Repayment Schedule Calculator
- Groww Average Calculator
- PTR PTS Calculator
- LIC Nivesh Plus Calculator
- LIC Jeevan Anand Calculator
- RPLI Calculator
- PLI Surrender Calculator
- Loan EMI Calculator
Health & Fitness
- TDEE Calculator
- BMR Calculator
- Macro Calculator
- Lean Body Mass Calculator
- Body Weight Calculator
- Visceral Fat Calculator
- OB Wheel Calculator
- Pregnancy Calculator in Tamil
Education & Exams
- Marks Percentage Calculator
- Attendance Calculator
- KL Attendance Calculator
- CGPA to Marks Calculator
- VIT CGPA Calculator
- SRM CGPA Calculator
- Saveetha CGPA Calculator
- KL CGPA Calculator
- VTU SGPA Calculator
- VTU CGPA Calculator
- MIT GPA Calculator
- JEE Main Score Calculator
- JEE Response Sheet Calculator
- GATE Score Calculator
- Negative Marking Calculator
- UPSC Age Calculator
- UPSC Marks Calculator
- CET Percentile Calculator
Astrology & Numerology
- Bhagyank Calculator
- Tarabalam Calculator
- Pratyantar Dasha Calculator
- Darakaraka Calculator
- Atmakaraka Calculator
- Shadbala Calculator
- Raj Yog Calculator
- Mobile Numerology Calculator
- Lucky Vehicle Number Calculator
Everyday & Utility
- Birth Date Calculator
- Duration Calculator
- Anniversary Calculator
- Work Experience Calculator
- Fuel Calculator
- Toll Calculator India
- KSEB Bill Calculator
- Court Fees Calculator
- Denomination Calculator
- MS Plate Weight Calculator
- Channel Weight Calculator
- Metal Weight Calculator
- Friendship Calculator
- Face Shape Calculator
- OVR Calculator
- Arcade Points Calculator
- CX3 Calculator
- India VIX Calculator
Why Use MiniToolLab?
- Formulas are shown openly on every tool, so you can see exactly how a result is calculated.
- Worked examples are verified, so you can check a result step by step.
- Every calculator is free with no signup.
- Every tool is mobile-friendly and works on phone, tablet and desktop.
- Estimate-based tools are clearly labelled, so you know when a result is an estimate rather than an official figure.
How Our Calculators Work
Using a MiniToolLab calculator is simple: pick a tool, enter your values, and get an instant result. You do not need to download anything or create an account. Each tool shows the formula it uses and a worked example, so you can follow the calculation yourself and trust the answer, whether you are checking a loan EMI, a CGPA conversion, a salary figure or a daily calorie target.
Finance tools use current published rates. For example, Sukanya and SCSS tools use 8.2% for Oct–Dec 2026, as published for that quarter. University tools state the grade scale they use, so a VIT, SRM, Saveetha, KL or VTU result is calculated on that university’s scale rather than a generic one. Where a result depends on official tables or future rules, the tool is labelled as an estimate.
That labelling matters for estimate tools such as 8th Pay, LIC and toll calculators, where the final official figure can differ. Use these tools for planning and comparison, then confirm the final amount with the official source, your payslip or your policy document. For everyday maths, dates and percentages, the result follows the stated formula directly.
New here? Read our Calculator Guides to see how each calculator works before you start.
Frequently Asked Questions (FAQs)
Are the calculators on MiniToolLab free?
Yes — every calculator is completely free, with no signup, no login and no usage limit.
Are the results accurate?
Each tool shows its formula and a worked example, and finance tools use the latest published rates. Where a figure depends on official tables (LIC, court fees, 8th Pay), the tool is clearly labelled as an estimate.
Do I need to create an account?
No. MiniToolLab calculators work instantly in your browser and nothing you enter is stored.
Which is the most popular calculator?
The TDEE Calculator, Loan EMI Calculator and CGPA to Marks Calculator are among the most used tools on the site.
Can I use these calculators on my phone?
Yes — every calculator is mobile-friendly and works the same on phone, tablet and desktop.