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📈
Compound Interest
Grow your savings over time with compounding.
finance
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💰
ROI Calculator
Calculate return on investment for any asset.
finance
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🧾
Income Tax Estimator
Estimate your federal tax liability quickly.
finance
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🏦
Savings Goal
How long to reach your savings target?
finance
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🏠
Mortgage Calculator
Monthly payment, amortization & total cost.
finance
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🍽️
Tip Calculator
Split the bill and calculate tips easily.
finance
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%
Percentage Calculator
Percent of, percent change, and reverse percent.
math
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🔢
Scientific Calculator
Full scientific notation with trig and log functions.
math
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½
Fraction Calculator
Add, subtract, multiply, divide fractions.
math
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∞
Prime Number Checker
Is your number prime? Get factors instantly.
math
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📊
Statistics Calculator
Mean, median, mode, std dev, variance.
math
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📐
Pythagorean Theorem
Solve for any side of a right triangle.
math
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⚖️
BMI Calculator
Body mass index with health range guide.
health
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🥗
Calorie Calculator
Daily calorie needs based on TDEE.
health
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💧
Water Intake
Daily hydration needs by weight & activity.
health
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🎂
Age Calculator
Exact age in years, months, days from DOB.
health
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🌡️
Temperature
Celsius, Fahrenheit, Kelvin conversions.
convert
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💱
Currency Converter
Live FX rates for major world currencies.
convert
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📏
Unit Converter
Length, weight, volume, speed and more.
convert
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💾
Data Storage
Bits, bytes, KB, MB, GB, TB conversions.
convert
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⚡
Speed / Distance / Time
Solve for any variable in the motion equation.
science
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🔌
Ohm's Law
Voltage, current, resistance, power — any.
science
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🧪
Density Calculator
Mass, volume, density — solve for any value.
science