MyUtilityBox

Smart Calculators Hub

Precision tools for Finance, Health, Math, and Unit Conversion. Designed for clarity, speed, and academic accuracy.

Mortgage

Monthly payments & amortization

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Loan

Personal & auto loans

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Compound Interest

Investment growth

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Simple Interest

Basic interest calc

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Investment (ROI)

Return on investment

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Retirement

401k & IRA planning

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Savings

Goal planning

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SIP

Systematic investment planning

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Salary / Income Tax

Net income & tax math

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Sales Tax

Tax calculation

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Tip

Service gratuity

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BMI

Body Mass Index

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BMR

Basal Metabolic Rate

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Calorie

Daily calorie needs

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Body Fat

Body fat percentage

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Ideal Weight

Target weight

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Pregnancy

Due date estimate

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Scientific

Advanced functions

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Percentage

Percent calculations

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Fraction

Fraction operations

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Average

Mean, median, mode

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Ratio

Ratio & proportion

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Length

m, ft, in, km, mi

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Weight

kg, lb, oz, g

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Temperature

°C, °F, K

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Area

m², ft², acre

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Volume

L, gal, ml, cup

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Currency

Exchange rates & theory

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Age

Calculate age

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Date Difference

Days between dates

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Time

Time arithmetic

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Business Days

Workday calculator

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Master Your Metrics

Financial Planning & Wealth

Take control of your financial future with our suite of investment and tax tools. Whether you are calculating SIP returns, estimating your Salary after tax, or planning your Retirement corpus, our calculators use the latest fiscal data (2024-25 regimes) for India, USA, and UK.

Understanding the "Time Value of Money" is critical. Use our Compound Interest and ROI calculators to visualize how small contributions today grow into substantial wealth tomorrow.

Health & Vitality Science

Health metrics like BMI (Body Mass Index) and BMR (Basal Metabolic Rate) provide a baseline for your fitness journey. Our tools don't just give you a number; they explain the medical context behind it.

Track your Body Fat percentage or estimate your daily Calorie needs with formulas derived from clinical research (Mifflin-St Jeor, Harris-Benedict). Precision is key to effective health management.

Mathematical Precision

From converting complex Engineering Units to solving everyday Percentage and Fraction problems, our math utilities are built for students, engineers, and professionals who need error-free results instantly.

All calculations are performed client-side for maximum privacy and speed.