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All calculators
Full index of all 80 TudoCalc calculators, organized by category.
💰
Finance
Compound interest
Simple interest
Loan (SAC and Price)
Profit margin
CAGR (annual growth)
ROI (return on investment)
APY (effective rate)
Break-even point
Paycheck (take-home)
Mortgage
Auto loan
401(k)
Credit card payoff
Salary ↔ hourly
Sales tax
📐
Math
Percentage
Rule of three
Area of shapes
Pythagorean theorem
Logarithm
Trigonometry (sin, cos, tan)
Slope / grade
Scientific notation
Roman numerals
❤️
Health
BMI
BMR & calories
Ideal weight
Pregnancy (due date)
Fertile window
Body fat %
Daily water
Sleep (best time)
🔁
Conversion
Length converter
Weight & mass converter
Temperature converter
Speed converter
Volume converter
Area converter
Digital data converter
Time converter
Energy converter
Pressure converter
Angle converter
🎓
Students
Quadratic formula
LCM & GCD
Grade needed
Fraction
Power & root
GPA
📅
Date & Time
Age
Days between dates
Add/subtract dates
🏗️
Construction
Wall paint
Floor & tiles
Concrete volume
🔬
Physics
Average speed
Ohm's law
Kinetic energy
🎉
Events
Barbecue
📊
Statistics
Mean & standard deviation
Combinations & permutations
🏠
Everyday
Bill split
Trip fuel cost
Discount
Energy cost
Unit price
Hours worked
Dog age
🍽️
Food
Daily protein
Macros (macronutrients)
🏃
Sports
Heart rate zones
Running pace
1RM (one-rep max)
🧪
Chemistry
Molarity
🌦️
Weather
Feels-like temperature
💻
Tech / IT
Download time
Subnet (IPv4/CIDR)
Password strength
HEX ↔ RGB color
Aspect ratio