79 calculators · FY 2026-27 rules
Free calculators, made for India
EMI, income tax, SIP and GST — plus BMI, calorie, pregnancy, percentages, fractions and more. Instant results, current Indian rules and clear explanations. Free, private and runs in your browser.
Popular calculators
EMI Calculator
Monthly EMI, total interest and amortization schedule
CalculateGST Calculator
Add or remove GST with CGST/SGST/IGST split
CalculateIncome Tax Calculator
New vs Old regime — see which saves you more
CalculateSIP Calculator
Future value of your monthly mutual fund SIP
CalculateBMI Calculator
BMI for adults (Asian and WHO ranges) and for children by age and gender
CalculateCalorie Calculator
Daily calories to maintain, lose or gain weight
CalculateDue Date Calculator
Estimated due date from LMP, conception, IVF or scan
CalculatePercentage Calculator
Percent of a number, percent change, increase and decrease
CalculateFinance
Loans, tax, investments and salary
Loans
3 calculators · EMI and loan eligibility
Tax
4 calculators · Income tax, GST, HRA, gratuity
Investments
5 calculators · SIP, PPF, FD, RD, interest
Salary
4 calculators · In-hand pay, HRA, gratuity, tax
Health & Fitness
BMI, calories, pregnancy, nutrition
Fitness
14 calculators · BMI, calories, body fat, workouts
Pregnancy
7 calculators · Due date, ovulation, period, weight gain
- Pregnancy Calculator
- Pregnancy Weight Gain Calculator
- Pregnancy Conception Calculator
- Due Date Calculator
- Ovulation Calculator
Nutrition & Health
11 calculators · Macros, TDEE, GFR, BSA, BAC
Math
Basic, scientific, statistics, geometry
Math
21 calculators · Basic, scientific, fractions, percentages
- Basic Calculator
- Scientific Calculator
- Fraction Calculator
- Percentage Calculator
- Random Number Generator
Statistics
10 calculators · Mean, SD, probability, z-score, CI
- Random Number Generator
- Standard Deviation Calculator
- Number Sequence Calculator
- Sample Size Calculator
- Probability Calculator
Geometry
9 calculators · Triangle, area, volume, circle, distance
Why Calculator4You?
Current Indian rules
Tax slabs, GST 2.0 rates, PPF and HRA rules, plus Asian (India) BMI ranges — reviewed after every Budget, GST Council meeting and rate notification, with the date shown on the page.
Private by design
Everything is calculated in your browser. We never store or send your salary, weight or any other number you type.
Explained simply
Every calculator comes with a plain-language guide, a worked example and answers to common questions.
Fast on any phone
Light pages and instant results — built mobile-first for Indian networks and devices.