About Us
About Master Calc — free online calculators for India. 85+ tools for EMI, GST, SIP, income tax, salary, property, health and everyday math. No signup, privacy-first.
Welcome to Master Calc
Master Calc (mastercalc.in) is a free online calculator platform built for Indian users — salaried employees, small business owners, shopkeepers, freelancers, students and families who need quick, accurate numbers before visiting a bank, mutual fund distributor or chartered accountant.
We offer 85+ free calculators across eight categories: loans & EMI, savings & deposits, mutual funds & retirement, stocks & trading, tax & GST, property, health and everyday math tools. Every tool runs instantly in your browser on mobile or desktop — no signup, no app install, and we do not store the amounts you enter.
85+
Calculators
100%
Free
24/7
Available
Our Mission
To empower individuals and businesses across India with accurate, easy-to-use financial and utility calculation tools. We believe everyone should have access to reliable planning resources — EMI estimates, GST on invoices, SIP projections, tax regime comparison — without spreadsheets, paid apps or confusing jargon.
Master Calc is built for real decisions: comparing home loan offers, checking FD maturity before booking, planning SIP for a child's education, or adding GST to a shop quote. Our goal is to save you time and help you ask better questions when you meet your bank, CA or financial advisor.
Why Choose Us?
Accurate Calculations
Precise financial formulas
Easy to Use
Simple and intuitive interface
Free Forever
No hidden charges
Privacy First
Your data stays local
Made for India
₹, GST, tax slabs & Indian products
Mobile Friendly
Use on phone at bank or client site
Guides & Blog
Detailed articles linked to each tool
What We Offer — 8 Calculator Categories
Every category has dedicated detail pages with step-by-step guides, FAQs and long-form articles so you understand the math — not just the answer.
- Loans & EMI — home loan EMI, prepayment, eligibility, comparison
- Savings & Deposits — FD, RD, PPF, compound interest
- Mutual Funds & Retirement — SIP, SWP, NPS, FIRE
- Stocks & Trading — CAGR, XIRR, capital gains, position size
- Tax, GST & Salary — GST, income tax, HRA, CTC, gratuity
- Property & Home — rent vs buy, stamp duty, carpet area
- Health & Fitness — BMI, calories, BMR, pregnancy due date
- Math, Date & Tools — percentage, age, unit converter, currency
Popular starting points: Loan EMI calculator, GST calculator, SIP calculator, Income tax calculator and our free GST invoice generator.
Who Is Master Calc For?
- homeHome loan borrowers — estimate EMI, prepayment savings and affordability before bank visits.
- storeSmall businesses & freelancers — GST on quotes, reverse GST on invoices and professional PDF billing.
- trending_upMutual fund & stock investors — SIP, lumpsum, XIRR, CAGR and capital gains tax planning.
- workSalaried employees — old vs new tax regime, HRA exemption, gratuity and CTC to in-hand salary.
- schoolStudents & daily users — percentage, LCM, age calculator, BMI, unit converter and date tools.
How Master Calc Works
Pick a calculator from the menu or category page, enter your numbers (loan amount, GST rate, SIP amount, date of birth, etc.) and get instant results. Change inputs as many times as you want to compare scenarios — longer tenure vs shorter, old tax regime vs new, 10% vs 15% SIP step-up.
Each calculator page includes a Complete Guide article, FAQs and links to related tools so you can go deeper without leaving the site. For longer reads, visit our finance blog — guides on home loan EMI, GST (CGST, SGST, IGST), SIP goals, FD interest, PPF rules, old vs new tax regime and more.
Disclaimer: All calculators on Master Calc are for education and planning only. They are not financial, tax or legal advice. Interest rates, tax rules and market returns change — verify important figures with your bank, AMC or chartered accountant before signing documents or filing returns.