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Fast, accurate calculators for money, math, time, conversions, and everyday decisions. 100% in your browser.
Popular Calculators
The most frequently used tools, updated in real time.
EMI Calculator
Calculate monthly loan payments, total interest, and complete amortization schedule.
SIP Calculator
Calculate returns on Systematic Investment Plans with compound growth projection.
Income Tax (FY 2024-25)
Calculate income tax under New & Old tax regimes with Section 87A rebate and cess.
Percentage Calculator
Calculate percentages, percentage increases, decreases, and proportion differences.
GST Calculator
Calculate Goods and Services Tax (GST) including CGST, SGST, and IGST breakdown.
Age Calculator
Calculate exact chronological age in years, months, days, and next birthday countdown.
BMI Calculator
Calculate Body Mass Index, WHO health risk category, and healthy weight range.
Compound Interest
Calculate future portfolio growth with recurring deposits and compounding periods.
World Time, Converters & Meeting Planner
True astronomical IANA timezones with automatic daylight-saving adjustment. Coordinate global remote teams across London, New York, Bengaluru, San Francisco, and Tokyo.
Browse All 18 Categories
Over 130 specialized, authentic calculators across science, finance, engineering, and everyday life.
Mathematics
Algebra, Percentages, Fractions, Sequences, Matrices, Vectors & Statistics
Geometry
2D Areas, 3D Solids, Volumes, Coordinates & Trigonometric Ratios
Finance & Investments
Compound Interest, SIP, Stocks, Bonds, Valuation & Portfolio
Loans & Mortgages
Home Loans, EMI, Auto Loans, Amortization & Debt Payoff
Tax & Compliance
Income Tax (FY 24-25), GST, TDS, Deductions & Capital Gains
Salary & Employment
CTC to Take-Home, EPF, Gratuity, Overtime & Consulting Rates
Retirement & FIRE
Retirement Corpus, 4% Rule, FIRE Numbers, NPS & Pensions
Business & SaaS
CAC, LTV, MRR, ARR, Margins, EBITDA, Break-Even & Runway
Real Estate
Rental Yield, Cap Rate, Cash-on-Cash, Affordability & Appreciation
Date & Time
Exact Age, Date Differences, Business Days & Event Countdowns
Unit Converters
Length, Weight, Temperature, Area, Speed, Data, Pressure & Power
Physics & Mechanics
Kinematics, Newton’s Laws, Energy, Momentum, Fluids & Waves
Electrical & Circuits
Ohm’s Law, Power, Resistors, Capacitors, Wire Gauge & Energy Cost
Chemistry
Molarity, Molality, Solution Dilution, pH, Gas Laws & Stoichiometry
Construction & Materials
Concrete Slabs, Tiles, Paint, Flooring, Roof Area & Gravel
Automotive & Travel
Fuel Cost, Mileage, EV Charging, Cost Per Mile & Depreciation
Health & Fitness
BMI, BMR, TDEE Calories, Ideal Weight, Running Pace & Macros
Everyday & Shopping
Discounts, Tips, Bill Splits, Unit Pricing & Recipe Scaling
Educational Guides & Mathematical Deep Dives
Step-by-step mathematical theory, reducing-balance loan amortization schedules, safe withdrawal formulas, and worked examples across all 18 categories.
All arithmetic, amortization, and dates calculate instantly in your browser. No server lag, no external calculation APIs.
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