Free Math, Financial & Health Calculators
Type a full math expression or choose a focused calculator for percentages, fractions, loans, sales tax, investments, BMI, and more.
Quick expression calculator
Standard order of operations
Type ** to insert ^ for powers. Superscript digits are also supported.
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All calculators
Percentage Calculators
Use free percentage calculators for percent of a number, percentage change, percentage increase or decrease, percentage difference, and discounts.
Math Calculators
Use free math calculators for fractions, mixed numbers, least common multiple, greatest common factor, common denominators, and decimal conversions.
Financial Calculators
Use free financial calculators to estimate loan payments, sales tax, amortization, inflation, investment growth, mortgages, margin, and savings.
Health Calculators
Use free health calculators to estimate adult BMI, daily calories, TDEE, BMR, and other practical health measurements.
About SnappyCalcs
Each calculator is built to show the result clearly, with formulas, examples, and related tools close by.
Financial and health calculators are educational estimates only. They do not provide professional advice, diagnosis, or guaranteed results.
Good to know
FAQ
Yes. The expression calculator supports decimals, parentheses, addition, subtraction, multiplication, division, and powers. It follows standard order of operations and can show the calculation steps.
SnappyCalcs includes a full expression calculator plus calculators for fraction arithmetic, mixed numbers, simplifying fractions, decimal conversions, common denominators, least common multiple, greatest common factor, percentages, loans, investments, mortgages, BMI, and calories.
Yes. The calculators are free to use and do not require an account.
Use the mortgage calculator for home loans, auto loan calculator for vehicle financing, student loan calculator for fixed-rate student repayment, personal loan calculator for unsecured loans with optional origination fees, loan calculator for general fixed-rate repayment, amortization calculator when the payment schedule is the main focus, and margin calculator for pricing or markup checks.
Use the fraction calculator for arithmetic, the mixed number calculator for mixed-number operations, the simplifying fractions calculator for lowest terms, the conversion calculators for decimals and fractions, and the LCD, LCM, or GCF calculator for denominator, multiple, or factor problems.
Use the BMI calculator to estimate adult body mass index from height and weight. Use the calorie calculator to estimate TDEE, BMR, maintenance calories, goal calories, and basic macros.
No. Financial calculators provide educational estimates only. They do not guarantee results or recommend financial decisions.