Mathematical Foundry.

Mortgage

Calculate your monthly mortgage payment, total interest, and full amortization schedule instantly.

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EMI / Loan

Calculate your Equated Monthly Installment for any loan — personal, car, or home loan.

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SIP / Mutual Fund

Calculate returns on your SIP (Systematic Investment Plan) investments with inflation-adjusted projections.

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Compound Interest

See the power of compound interest — calculate how your money grows over time with any rate and frequency.

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Currency

Convert between 170+ currencies with live exchange rates updated in real-time.

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Retirement

Calculate the exact corpus needed to achieve financial independence and retire early with inflation-adjusted precision.

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Lumpsum

Project the future value of your one-time mutual fund or stock investments with historical CAGR benchmarks.

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FD

Calculate your maturity amount and interest earned on Fixed Deposits with quarterly and monthly compounding options.

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RD

Plan your systematic savings with our RD calculator. Calculate interest and maturity value for any tenure.

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ROI

Calculate the Return on Investment (ROI) and annualized returns for any business or personal investment.

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CAGR

Calculate Compound Annual Growth Rate (CAGR) to understand the average annual growth of your investments over time.

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SWP

Calculate how much you can withdraw monthly from your investment corpus while maintaining its longevity. Ideal for retirees.

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Lumpsum vs SIP

Compare the performance of a one-time lumpsum investment versus a systematic investment plan (SIP) over the same period.

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Stock Average

Calculate your new average share price when buying more of the same stock at different price points. Master 'buying the dip'.

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Valuation

Estimate the intrinsic value of a company using the Discounted Cash Flow (DCF) method. Professional grade tool for founders.

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Runway

Calculate how many months of cash your startup has left based on monthly burn rate and current revenue growth.

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Crypto Profit

Calculate your net profit or loss from crypto trades, including exchange fees and gas costs.

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PPF

Calculate your maturity amount and interest for Public Provident Fund (PPF) investments with tax-free returns.

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NPS

Estimate your monthly pension and lump sum amount at retirement from the National Pension System (NPS).

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EPF

Calculate your retirement corpus in the Employees' Provident Fund (EPF) based on your basic salary and contributions.

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Inflation

See how inflation affects your purchasing power over time. Compare historical prices or future costs.

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Car Loan

Estimate your monthly car loan EMI, total interest, and overall cost of ownership for a new or used vehicle.

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Dividend Yield

Calculate the dividend yield of a stock and see your potential annual income from dividend-paying investments.

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Net Worth

Calculate your total net worth by aggregating your assets (cash, investments, property) and liabilities (loans, debt).

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Gratuity

Calculate the gratuity amount you are entitled to after leaving a job based on your tenure and last drawn salary.

Tax & Salary

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Income Tax

Calculate your income tax for FY 2025-26 under the new & old tax regime with full breakdown.

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Salary

Calculate your exact take-home salary after all deductions — PF, professional tax, HRA, and more.

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GST

Add or remove GST from any amount instantly. Supports all GST slabs — 5%, 12%, 18%, and 28%.

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HRA

Calculate your HRA tax exemption amount based on your basic salary, HRA received, and rent paid.

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TDS

Calculate Tax Deducted at Source (TDS) for various payments like salary, rent, and professional fees.

Health

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BMI

Calculate your Body Mass Index (BMI) with personalized weight category, health risk assessment, and ideal weight range.

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BMR / TDEE

Calculate your Basal Metabolic Rate and Total Daily Energy Expenditure to hit your fitness goals.

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Body Fat %

Estimate your body fat percentage using multiple methods — Navy formula, BMI method, and more.

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Calories

Calculate the perfect calorie deficit for safe, sustainable weight loss with a timeline projection.

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Ideal Weight

Find your ideal body weight based on your height, gender, and frame size using scientific formulas.

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Due Date

Estimate your baby's due date and track your pregnancy timeline with key milestones.

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Water

Calculate how much water you should drink daily based on your weight and activity level.

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Sleep

Find the best time to wake up or go to bed based on natural sleep cycles to wake up refreshed.

Math

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Percentage

Solve any percentage problem — what is X% of Y, percentage change, increase/decrease, and more.

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Scientific

A beautiful, fully-functional scientific calculator with history, memory functions, and keyboard support.

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Fractions

Add, subtract, multiply, and divide fractions easily with step-by-step results.

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Ratio

Simplify ratios, find missing values, and divide amounts into specified ratios.

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Discount

Calculate the final price after a discount and see exactly how much you're saving.

Utility

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Age

Calculate your exact age in years, months, days, hours, and minutes from any date of birth.

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Date Difference

Calculate the exact number of days, weeks, months, or years between any two dates.

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Unit Converter

Convert between 200+ units across length, weight, temperature, speed, area, volume, and more.

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Tip

Calculate the tip and split the bill easily among friends with custom percentages.

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Fuel Cost

Estimate the fuel cost for your trip based on distance, fuel efficiency, and price.

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Color Converter

Convert colors between HEX, RGB, HSL, and HSV formats instantly. Pick any color and get all formats with one click.

Education

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GPA

Calculate your GPA, CGPA, and percentage instantly. Supports 4.0, 10.0 scale and custom grade points.

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Password

Generate cryptographically secure passwords and instantly check the strength of any password.

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LTV

Calculate your Loan-to-Value ratio to understand your equity and mortgage risk.