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Over 5,139 calculators for finance, health, math, science, construction, cooking, and everyday life. No signup. No ads. Just answers.

5,139 Calculators
14 Categories
100% Free

Popular Calculators

Mortgage Calculator
Calculate monthly payments, interest & amortization for your home loan.
Compound Interest
See how your investments grow over time with compound interest.
BMI Calculator
Check your Body Mass Index and healthy weight range.
Loan Calculator
Calculate monthly payments and total cost for any loan.
Calorie Calculator
Estimate daily calorie needs based on your activity level.
Retirement Savings
Plan how much to save each month to reach your retirement goal.
Body Fat Calculator
Estimate your body fat percentage using body measurements.
Savings Calculator
See how your savings grow with regular deposits and interest.

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D
everyday
295 calculators
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finance
608 calculators
Mortgage, loans, investments, retirement & tax calculators
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statistics
196 calculators
Mean, standard deviation, probability & regression calculators
F
physics
539 calculators
Mechanics, electricity, optics, thermodynamics & waves
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other
219 calculators
Miscellaneous & specialty calculators
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health
442 calculators
BMI, calories, body fat, pregnancy & fitness calculators
f(x)
math
715 calculators
Algebra, geometry, statistics, fractions & number tools
S
sports
117 calculators
Running pace, cycling, swimming & sports performance tools
C
construction
161 calculators
Concrete, roofing, paint, fencing & building material estimators
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conversion
1488 calculators
Length, weight, temperature, volume & unit converters
B
biology
115 calculators
Genetics, ecology, microbiology & cell biology calculators
H
chemistry
115 calculators
Molarity, dilution, pH, stoichiometry & gas law calculators
E
ecology
46 calculators
Carbon footprint, solar, wind energy & sustainability tools
F
food
83 calculators
Cooking conversions, recipe scaling, coffee, baking & BBQ tools

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Real Formulas

Every calculator uses verified mathematical formulas — amortization, BMI, compound interest, Shannon Index — not rounded estimates.

CalculatorHunt.com is a comprehensive free calculator library with over 5,139 tools spanning 14 categories. From mortgage payments and compound interest to BMI, carbon footprint, and advanced physics — we have the tool you need.

Our mortgage calculator uses the standard amortization formula M = P[r(1+r)n]/[(1+r)n-1]. Our BMI calculator applies the WHO formula BMI = kg/m2. Our ecology calculators implement Lotka-Volterra and Shannon Diversity models used in academic research.

Finance: Mortgage, loan amortization, retirement, tax, investment. Health: BMI, BMR, calories, body fat, pregnancy. Math: Algebra, geometry, fractions, statistics. Science: Physics, chemistry, ecology. Everyday: Cooking, conversions, construction, sports — and much more.