Free Online Calculators for Finance, Tax, Health and Math
Find the right calculator fast — salary, tax, loans, mortgage, BMI, percentage, pregnancy, and more. Free, private, and instant in your browser.
- ✓100+ free tools for finance, tax, salary, health, and math
- ✓Browser-based & private — calculations stay on your device
- ✓India & USA focus — tax, salary, loans, and mortgage calculators
- ✓Verified formulas — reviewed for current-year planning
Browse Free Online Calculators by Category
Finance, tax, health, math, and real estate tools — pick a category, then open the calculator that answers your question.
Finance
Comprehensive financial calculators for loans, investments, taxes, and money management
Health & Fitness
Health, fitness, pregnancy, and nutrition calculators for wellness tracking
Math & Utilities
Mathematical calculators, converters, and utility tools for everyday calculations
Real Estate
Mortgage, house affordability, rent vs buy, rental ROI, BRRRR, refinance, down payment, property tax, and home improvement calculators
Tools & Unit Converters
Free online unit converters for temperature, length, weight, currency, volume, speed, area, time, digital storage, and pressure. Convert 150+ units instantly with real-time calculations, live exchange rates, favorites, and history.
🇮🇳 India calculators
Income tax, salary, EMI, SIP, PPF, and GST tools for Indian users.
Browse India calculator hub →🇺🇸 USA calculators
US salary, federal tax, mortgage, 401(k), and retirement planning.
Browse USA calculator hub →Popular Free Online Calculators
Start with the tools people use most for tax, salary, loans, health, and everyday math.
India Income Tax Calculator FY 2025-26
Free India Income Tax Calculator for FY 2025-26 (AY 2026-27). Calculate tax under old and new regime, compare both regimes instantly, maximize deductions under Section 80C (₹1.5L), 80D (₹50K health insurance), 80CCD1B (₹50K NPS). Includes TDS reconciliation, senior citizen benefits, tax planning tips. Know exact tax liability, monthly TDS deduction, and which regime saves more money.
Loan EMI Calculator India
Calculate monthly EMI for home loans, personal loans, car loans in India (₹ INR). Get amortization schedule, prepayment insights, tax benefits under Section 80C & 24, and compare SBI, HDFC, ICICI, Axis Bank rates.
US Salary Calculator 2026: Take-Home Pay After Taxes
US salary calculator 2026: estimate take-home pay after federal, state, FICA, and paycheck deductions for all 50 states. Convert annual, monthly, biweekly, weekly, and hourly pay.
Mortgage Calculator 2026: PITI, PMI, FHA & VA Payments
Calculate monthly mortgage payment with principal, interest, taxes, insurance, PMI, FHA/VA options, and amortization. Educational estimate for homebuyers.
BMI Calculator: Body Mass Index, Category & Healthy Range
Calculate BMI from height and weight, see adult BMI category, healthy weight range, health risk context, metric/imperial inputs, and BMI limitations.
Percentage Calculator: Percent Of, Increase, Decrease & Difference
Calculate percent of a number, percentage increase, percentage decrease, percentage difference, discounts, tips, taxes, grades, salary raises, and price changes with formulas.
SIP Calculator India: Monthly Investment Growth, Step-Up & Goal Planning
Calculate SIP maturity, monthly investment growth, step-up SIP, monthly investment needed for a goal, total invested, estimated gains, and long-term mutual fund corpus scenarios for India.
Pregnancy Due Date Calculator
Estimate pregnancy due date, current week, trimester, and conception window from last menstrual period (LMP), conception date, or IVF transfer. Includes week-by-week context and due date accuracy guidance.
India Calculators — Tax, Salary, Loans & Investments
Plan FY income tax, in-hand salary, home loan EMI, SIP, and PPF with calculators built for India.
- India Income Tax Calculator FY 2025-26
- Loan EMI Calculator India
- SIP Calculator India: Monthly Investment Growth, Step-Up & Goal Planning
- PPF Calculator India 2026: 15-Year Maturity & Interest
- Salary Calculator India 2025-26: CTC to In-Hand
- GST Calculator India 2026: Add, Remove & Reverse GST
Train booking help: IRCTC login, payment & PNR tools
USA Calculators — Salary, Tax, Mortgage & Retirement
Estimate US take-home pay, income tax, mortgage payments, and retirement savings.
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Frequently Asked Questions
Quick answers about free online calculators, India and USA tools, and how we handle your data.