Math & Calculators
Fast, accurate online calculators for everyday math — money, health, units, and more.
All Tools
32 toolsScientific Calculator
Advanced calculator for scientific operations
Fraction Calculator
Add, subtract, multiply, divide fractions
General Math
LCM, GCD, Factors, Prime Checker
Algebra Solver
Solve linear and quadratic equations
Percentage Calculator
Calculate percentages and changes
Statistics Calculator
Mean, Median, Mode, Std Dev
Discrete Math
Permutations, Combinations, Truth Tables
Geometry Calculator
Area, Volume, Perimeter solver
Trigonometry
Solve triangles and identities
Discount Calculator
Calculate sale price & savings
Loan Calculator
Calculate monthly payments
Age Calculator
Calculate age from date of birth
Date Difference
Calculate days between dates
Average Calculator
Calculate mean, median, mode
Sales Tax Calculator
Calculate tax and total
Margin Calculator
Calculate profit margin
Probability Calculator
Calculate simple probability
GST Calculator
Calculate GST tax
PayPal Fee Calculator
Calculate PayPal fees
CPM Calculator
Calculate Cost Per Mille
AdSense Calculator
Estimate AdSense earnings
Unit Converter
Convert length, weight, etc.
BMI Calculator
Calculate your Body Mass Index
Tip Calculator
Calculate tips and split bills
GPA Calculator
Calculate semester and cumulative GPA
Pregnancy Due Date
Estimate due date from LMP or conception
Compound Interest Calculator
Calculate compound interest growth
Graphing Calculator
Plot mathematical functions on a graph
Hours Calculator
Calculate hours and minutes between two times
VAT Calculator
Add or remove VAT from prices with any VAT rate
ROI Calculator
Calculate return on investment and annualized ROI
Expense Calculator
Track and summarize your monthly expenses
Why use free math & calculators?
Whether you are splitting a bill, checking your BMI, converting units for a recipe, or calculating compound interest on savings, our calculator collection has you covered. Every calculator is accurate, easy to use, and completely free.
Frequently Asked Questions
Are the calculators accurate?
Yes. All calculators use precise, well-tested formulas and return results with appropriate precision.
Is there a unit converter?
Yes. Convert between metric and imperial units including length, weight, temperature, and currency.
Do I need to sign up?
No. Every calculator is available instantly without an account.
Can I use these on mobile?
Yes. All calculators are fully responsive and work great on phones and tablets.