Free online math calculators
Daily math tasks — splitting a restaurant bill, checking if a home loan EMI fits your budget, computing the exact age for a visa application — rarely need a spreadsheet. These dedicated calculators give you instant answers with clear inputs and labeled results.
Each calculator runs entirely in your browser. No account, no upload, no server round-trip. Type a value and see the result immediately, or press Calculate for multi-step tools like the loan amortization breakdown.
From everyday tasks like discount price at checkout and splitting a tip, to school math like quadratic roots with complex number output, prime factorization, and fraction simplification — this hub covers calculations that come up repeatedly in daily life, work, and study.
Related tools are linked from each page so you can move between calculators without returning to search. All tools are mobile-friendly and work in both light and dark mode.
Tools in this category
- BMI CalculatorBody mass index from height and weight in metric or imperial units.Open tool →
- Age CalculatorExact age in years, months, and days from your date of birth.Open tool →
- Tip CalculatorRestaurant tip and bill splitter with quick percent presets.Open tool →
- Loan EMI CalculatorMonthly installment, total interest, and amortization schedule.Open tool →
- Compound Interest CalculatorFuture value and interest earned with multiple compounding options.Open tool →
- Discount CalculatorSale price, savings amount, and reverse discount percentage.Open tool →
- Scientific CalculatorSin, cos, tan, log, sqrt, and powers — fully keyboard operable.Open tool →
- Average CalculatorMean, median, mode, range, and sum from a list of numbers.Open tool →
- Area & Volume CalculatorCircle, rectangle, triangle, sphere, cylinder, and more shapes.Open tool →
- Number Base ConverterBinary, octal, decimal, and hex conversions shown simultaneously.Open tool →
- Fraction CalculatorAdd, subtract, multiply, divide fractions with GCD simplification.Open tool →
- Speed Distance Time CalculatorSolve for any of the three variables with unit conversion.Open tool →
- GCD & LCM CalculatorGreatest common divisor and least common multiple for up to 10 numbers.Open tool →
- Prime Number CheckerPrimality test, primes in a range, and prime factorization.Open tool →
- Quadratic Equation SolverSolve ax²+bx+c=0 with real and complex roots displayed.Open tool →
Frequently asked questions
- Are these math calculators free?
- Yes. All math tools on WebToolz365 are completely free with no signup required.
- Do calculations happen on a server?
- No. All computations run in JavaScript in your browser. No data is sent to our servers.
- Which tool should I use for a home loan?
- Use the Loan EMI Calculator for monthly installment, total interest, and an amortization schedule. Use the Compound Interest Calculator to compare savings growth.
- Does the scientific calculator support degrees and radians?
- Yes. The scientific calculator has a DEG/RAD toggle that converts inputs before applying trigonometric functions.