Most Popular Tools
The daily essential calculators reach for by millions.
Free Kundli Generator — Janam Kundli & Birth Chart
This Janam Kundli Generator calculates your complete Vedic birth chart from your birth date, time, and birt...
Airtel Payment Bank IFSC Code Finder & Transfer Helper
This tool provides the official nationwide IFSC code for Airtel Payments Bank (AIRP0000001) and generates v...
Aaj Ka Panchang — Daily Hindu Calendar & Shubh Muhurat
This Panchang calculates the daily Hindu almanac for today or any selected date across 12,000+ Indian citie...
Days Alive Calculator
This calculator computes the exact number of days, weeks, hours, and seconds you have been alive since birt...
Gaon Ka Byaj Calculator
The Gaon Ka Byaj Calculator helps you compute interest on informal village loans, peer-to-peer debt, and ag...
SIP Calculator
This tool shows how your money grows when you invest a fixed amount every month in a mutual fund. It calcul...
Age Calculator
Find exact age in years, months, days, and even hours.
Percentage Calculator
The Percentage Calculator solves a wide variety of percentage-related math questions. It handles calculatio...
Indian Tax Regime Calculator
This tool compares how much tax you owe under the two options provided by the government. It calculates you...
KSEB Bill Calculator 2026 — Kerala
This calculator estimates residential electricity bills for Kerala State Electricity Board (KSEB) domestic ...
TNEB Bill Calculator 2026
This calculator estimates your bi-monthly Tamil Nadu electricity bill under official TNERC domestic (LT-IA)...
SSY Calculator
This tool calculates the future wealth you can build for your daughter using a special government savings s...
🇮🇳 Indian Finance & Tax Tools
Tax planning, Sekda village interest, PPF, HRA, and government schemes for FY 2026-27.
Airtel Payment Bank IFSC Code Finder & Transfer Helper
This tool provides the official nationwide IFSC code for Airtel Payments Bank (AIRP0000001) and generates v...
Payment Banks IFSC Code Directory & Account Formats
This directory indexes the centralized IFSC codes, account numbering patterns, and RBI balance limits for a...
Gaon Ka Byaj Calculator
The Gaon Ka Byaj Calculator helps you compute interest on informal village loans, peer-to-peer debt, and ag...
SIP Calculator
This tool shows how your money grows when you invest a fixed amount every month in a mutual fund. It calcul...
Indian Tax Regime Calculator
This tool compares how much tax you owe under the two options provided by the government. It calculates you...
SSY Calculator
This tool calculates the future wealth you can build for your daughter using a special government savings s...
EPF vs NPS Calculator FY 2026-27
The EPF vs NPS Calculator provides a side-by-side comparison between Employee Provident Fund (EPF) and Nati...
Gold Loan Ornament Weight Deduction Calculator
The Gold Loan Ornament Weight Deduction Calculator determines your net gold weight after deducting stones, ...
MYSY Gujarat Scholarship Calculator 2026
This calculator evaluates your eligibility for Gujarat's Mukhyamantri Yuva Swavalamban Yojana (MYSY). It ch...
Pradhan Mantri Fasal Bima Yojana (PMFBY) Premium Calculator
This PMFBY Crop Insurance Premium Calculator calculates the subsidized premium payable by a farmer under th...
🎓 Exams & Study Tools
NEET, JEE Main, JEE Advanced rank predictors, JoSAA seat estimators, and study planners.
NEET Score Calculator 2026
This NEET Score Calculator 2026 helps medical aspirants calculate their estimated NEET score based on the o...
NEET Rank Predictor 2026
This NEET Rank Predictor 2026 estimates your expected All India Rank (AIR) and category rank based on your ...
JEE Main Percentile Calculator 2026
This JEE Main Percentile Calculator 2026 estimates your session percentile range based on your raw marks in...
JEE Advanced Score Calculator 2026
This JEE Advanced Score Calculator 2026 handles the complex multi-pattern marking scheme of IIT JEE Advance...
JEE Advanced Rank Predictor 2026
This JEE Advanced Rank Predictor 2026 maps your combined Paper 1 & 2 score (out of 360) to estimate your Al...
JoSAA College Predictor 2026
This JoSAA College Predictor 2026 searches official 2025 Round 6 opening and closing ranks for 134 institut...
JEE Main Rank Calculator 2026
This JEE Main Rank Calculator 2026 converts your NTA percentile score into an estimated All India Rank (AIR...
NEET College Predictor 2026
This NEET College Predictor 2026 estimates your chances of admission into top medical colleges like AIIMS, ...
JEE Advanced 2026 Eligibility Checker
This JEE Advanced 2026 Eligibility Checker cross-verifies all official criteria—including JEE Main category...
JEE & NEET Study Hours Planner
This JEE & NEET Study Hours Planner designs a customized preparation strategy based on your current score, ...
Everyday Math
From simple arithmetic to advanced algebra — fast, precise tools for everyday calculations.
Scientific Calculator
This Scientific Calculator helps you solve advanced math, science, and engineering problems. It goes beyond...
Statistics Calculator
Mean, median, standard deviation, and variance in one shot.
Slope Calculator
The Slope Calculator helps you find the steepness, direction, and equation of a line using two coordinate p...
Pythagorean Theorem
The Pythagorean Theorem Calculator helps you find the missing side of a right-angled triangle. Whether you ...
Quadratic Formula
Solve any quadratic equation and see both roots instantly.
Prime Factorization
Break any integer into its prime factor tree.
GCF Calculator
Find the greatest common factor for a set of numbers.
LCM Calculator
Find the least common multiple for any group of numbers.
Ratio Calculator
The Ratio Calculator simplifies, scales, and compares proportions between numbers. It helps you find missin...
Factor Calculator
Find all factor pairs and prime factors of an integer.
Smart Finance
Make confident money decisions — mortgages, investments, debt payoff, and more.
Mortgage Calculator — Monthly Principal, Interest & Amortization
The Mortgage Calculator helps home buyers, real estate investors, and homeowners estimate their exact month...
Loan Calculator — Monthly Payment & Interest Cost Estimator
The Loan Calculator computes the exact monthly installment, total interest payable, and final loan payback ...
Compound Interest Calculator — Investment Growth & APY Yield
The Compound Interest Calculator projects how investments, savings accounts, and reinvested dividends grow ...
Budget Calculator — 50/30/20 Rule & Expense Planner
The Budget Calculator organizes your monthly net income and splits expenses into Needs, Wants, and Savings ...
ROI Calculator — Return on Investment & Annualized CAGR
The ROI (Return on Investment) Calculator measures the overall profitability and annualized rate of return ...
Inflation Calculator
See how buying power erodes over time.
Simple Interest Calculator
Calculate interest on principal with no compounding.
Currency Calculator
Convert between world currencies with live rate context.
Commission Calculator
Calculate sales commissions for any rate or tiered structure.
Margin Calculator
Find selling price, cost, and gross profit margin.
Health & Body
Track fitness goals, understand nutrition, and make smarter health decisions.
BMI Calculator — Body Mass Index & Healthy Weight Range
The BMI (Body Mass Index) Calculator evaluates body weight relative to height for adult men and women accor...
BMR Calculator
Calculate basal metabolic rate and daily calorie needs.
Body Fat Calculator
Estimate body fat percentage using the Navy method.
Calorie Calculator — Daily BMR & TDEE Maintenance Targets
The Calorie Calculator estimates your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) ...
Protein Calculator
Find daily protein needs based on weight and activity.
Carbohydrate Calculator
Calculate daily carb intake for energy and fitness goals.
Fat Intake Calculator
Determine healthy dietary fat limits for your goals.
One-Rep Max Calculator
Estimate your maximum lifting capacity from workout data.
Water Intake Calculator
Find how much water to drink daily based on your weight.
BAC Calculator
Estimate blood alcohol concentration over time.
Time & Calendar
Age, dates, schedules, timezones — every time calculation you'll ever need.
Age Calculator
Find exact age in years, months, days, and even hours.
Days Between Dates
Count exact days or business days between any two dates.
Hours Calculator
Add up work hours, breaks, and timesheet entries.
Time Zone Converter
Compare times and coordinate meetings across time zones.
Dog Age Calculator
Convert your dog's age to human years by breed size.
Cat Age Calculator
Convert cat age to equivalent human years.
Birthday Countdown
See exactly how many days, hours, and minutes until your birthday.
Days Alive Calculator
This calculator computes the exact number of days, weeks, hours, and seconds you have been alive since birt...
Love Calculator
Calculate compatibility score between two names — for fun.
Numerology Calculator
Discover your life path number from your date of birth.
Science & Tech
Physics, chemistry, electronics — precise tools for STEM problems.
Ohm's Law Calculator
Solve for voltage, current, resistance, and power.
Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin instantly.
Unit Converter
Convert length, weight, area, volume, and more.
Half-Life Calculator
Estimate decay constant and remaining radioactive mass.
Resistor Color Code
Decode resistor band colors to get the resistance value.
Capacitor Calculator
Solve capacitance, stored charge, and energy in a capacitor.
Wavelength Calculator
Calculate frequency, wavelength, and speed of light.
Molarity Calculator
Calculate solution molarity, mass of solute, or volume of solvent. Includes a quick selector for common che...
Fuel Efficiency Calculator
Convert MPG, L/100km, and estimate fuel costs.
Voltage Drop Calculator
Calculate voltage drop in wire runs for electrical planning.
Construction & DIY
Measure, estimate, and plan any home improvement or building project.
Concrete Calculator
Estimate concrete volume needed for slabs, columns, and footings.
Paint Calculator
Calculate gallons of paint needed for any room or surface.
Flooring Calculator
Estimate flooring materials for any room shape.
Fence Calculator
Calculate fence panels, posts, and materials needed.
Wallpaper Calculator
Find out how many rolls of wallpaper a room needs.
Gravel Calculator
Estimate gravel volume and weight for landscaping projects.
Mulch Calculator
Calculate cubic yards of mulch for garden beds.
Roofing Calculator
Estimate roofing materials based on roof pitch and area.
Tile Calculator
This calculator estimates the exact number of tiles, tile boxes, and grout coverage you need to floor a roo...
Square Footage Calculator
Measure room area in square feet or square meters.
Electricity
Calculate slab-wise household electricity bills, state tariff comparisons, and DISCOM estimates.
Electricity Bill Calculator — All States
This calculator estimates your residential electricity bill across all major Indian states and electricity ...
MSEDCL Bill Calculator
This calculator estimates residential electricity bills for Maharashtra State Electricity Distribution Comp...
TNEB Bill Calculator 2026
This calculator estimates your bi-monthly Tamil Nadu electricity bill under official TNERC domestic (LT-IA)...
BESCOM Bill Calculator
This calculator estimates residential electricity bills for Bangalore Electricity Supply Company (BESCOM) a...
UPPCL Bill Calculator
This calculator estimates residential electricity bills for Uttar Pradesh Power Corporation Limited (UPPCL)...
PSPCL Bill Calculator 2026
This calculator estimates your Punjab State Power Corporation Limited (PSPCL) domestic electricity bill und...
DHBVN Bill Calculator
This calculator estimates residential electricity bills for Haryana consumers under Dakshin Haryana Bijli V...
Delhi Bill Calculator
This tool estimates domestic electricity bills in Delhi for BSES Rajdhani, BSES Yamuna, and TPDDL consumers...
KSEB Bill Calculator 2026 — Kerala
This calculator estimates residential electricity bills for Kerala State Electricity Board (KSEB) domestic ...
WBSEDCL Bill Calculator
This calculator estimates residential electricity bills for West Bengal State Electricity Distribution Comp...
Air Conditioner
Estimate AC electricity bills, room tonnage sizing, and inverter savings options.
AC Bill Calculator
This calculator estimates the monthly and yearly electricity bill contribution of running an air conditione...
AC Tonnage Calculator
This calculator estimates the right AC size (tonnage) needed for a room based on its area, ceiling height, ...
AC Savings Calculator
This calculator compares the running costs and purchase payback period of a 5-star AC vs a 3-star AC, or an...
AC Comparison Tool
This tool allows you to compare different AC models side-by-side. It calculates the effective 5-year owners...
AC Power Consumption Calculator
This calculator computes the hourly, daily, monthly, and annual electrical power consumption (in kWh units)...
AC Circuit Safety Calculator
This safety calculator recommends the correct copper wire gauge (thickness), MCB circuit breaker rating, an...
Appliance Cost Calculator
This calculator estimates the monthly electricity cost of running 30+ different household appliances, helpi...
AC Generator & Inverter Sizing Calculator
This calculator determines the generator (DG Set) or home inverter capacity required to safely start and ru...
Solar Energy
Check solar payback ROI, panel sizing, net metering exports, and PM Surya Ghar subsidy rules.
Solar Panel ROI Calculator
This calculator estimates the payback period (ROI) and 25-year cumulative savings of installing a rooftop s...
Solar Panel Size Calculator
This calculator determines the rooftop solar plant size (kW) and number of solar panels required to offset ...
Solar vs Grid Cost Calculator
This tool compares the cumulative 10-year costs of relying solely on the grid vs investing in a rooftop sol...
Net Metering Calculator
This calculator estimates the credits and financial adjustments you get when exporting surplus solar energy...
Battery Backup Calculator
This tool calculates the required battery capacity (Ah) and backup hours for home UPS/inverter systems base...
PM Surya Ghar Subsidy Calculator
This calculator estimates the official government subsidy for rooftop solar under the PM Surya Ghar: Muft B...
PM-KUSUM Solar Pump Subsidy Calculator
This calculator estimates the costs, subsidies, and water output for agricultural solar pumps under the gov...
Solar Water Heater Sizing & Savings Calculator
This calculator estimates the required capacity (LPD - Liters Per Day) and monthly/yearly electricity bill ...
Astrology & Kundli
Vedic astrology calculators, Janam Kundli, D9 Navamsa, Vimshottari Dasha, and Panchang.
Free Kundli Generator — Janam Kundli & Birth Chart
This Janam Kundli Generator calculates your complete Vedic birth chart from your birth date, time, and birt...
Kundli Matching — Free 36 Guna Milan for Marriage (Kundli Milan)
This Vedic Kundli Matching calculator evaluates marriage compatibility between two birth charts using the c...
Aaj Ka Panchang — Daily Hindu Calendar & Shubh Muhurat
This Panchang calculates the daily Hindu almanac for today or any selected date across 12,000+ Indian citie...
Today's Choghadiya — Day & Night Choghadiya Timings
This calculator computes the 16 Day and Night Choghadiya timings for any date across 12,000+ Indian cities....
Rahu Kaal Calculator by City and Date
This calculator computes the exact daily Rahu Kaal start and end times for over 12,000 Indian cities and to...
Brahma Muhurat Calculator by Location — Exact Dawn Timings
This calculator determines the exact pre-dawn Brahma Muhurat time window for your location based on geograp...
Abhijit Muhurat Exact Time Calculator Today
This calculator computes the exact midday Abhijit Muhurat time window for any Indian city. It identifies th...
Bhadra Kaal Start and End Time Calculator
This calculator evaluates the exact start and end times of Bhadra (Vishti Karana) for any date and city. It...
Panchak Vichar Calculator — Check Dates & Types
This calculator checks whether a given date falls during the 5-day Panchak period across the constellations...
Gandmool Nakshatra Dosha Calculator
This calculator identifies whether a newborn birth occurs in one of the six Gandmool Nakshatras (Ashwini, A...
Looking for something specific?
Browse our full sitemap directory of all 380+ free calculators arranged cleanly by category and subtopic.
Explore Full Calculator DirectoryHow Desi Calculator Works
Simple. Fast. Private. No signup wall.
Pick Any Calculator
Choose from tax, loans, health, or study tools. The formula engine loads directly into your browser tab.
Enter Your Numbers
Type your values. Every input is calculated locally via vanilla JavaScript — 0 bytes sent over the internet.
Get Instant Results
View real-time breakdowns, comparison tables, and save/download report summaries without paying anything.
Why You Can Trust Our Calculations
✓ Official Government Formulas
All tax, EPF, HRA, SSY, and loan formulas follow official circulars from the Income Tax Dept, EPFO, RBI, and SEBI.
✓ 100% In-Browser Execution
We cannot see your salary, loan amounts, or inputs. All math runs locally inside your browser process.
✓ FY 2026-27 Verified
Updated with the latest budget announcements, standard deduction limits, and interest rate slabs.
✓ Clear Math Explanations
Every calculator includes a step-by-step breakdown explaining the formula so you can verify the math yourself.
Frequently Asked Questions
Everything you need to know about Desi Calculator.
Yes. Every calculator on Desi Calculator is completely free with no signup, subscription, or hidden fees.
Yes. Calculations run 100% locally inside your browser using JavaScript. No input data is transmitted to any server.
Yes. All tax, HRA, Section 80C, and EPF calculators reflect the official FY 2026-27 Union Budget tax slabs.
Yes. Once the page is loaded, all calculations work offline without an active internet connection.
We offer Home Loan, Car Loan, Personal Loan, Education Loan, Two-Wheeler Loan, Gold Loan, and Credit Card EMI calculators.
Yes — including PPF, NPS, EPF, Sukanya Samriddhi Yojana (SSY), Senior Citizen Savings Scheme (SCSS), NSC, and Post Office MIS.