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488 precision calculators for math, finance, health, and everyday life, all powered by a single BigNumber engine. No signup, no clutter, instant answers.

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Showing 1 to 50 of 488 calculators

Basic Calculator

Simple everyday arithmetic: add, subtract, multiply, divide with a retro LCD display.

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Scientific Calculator

Advanced scientific calculator with trigonometry, logarithms, powers, and constants.

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Percentage Calculator

Calculate percentages: what is X% of Y, percentage change, and more.

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Fraction Calculator

Add, subtract, multiply, divide fractions. Simplify and convert to decimals.

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Area Calculator

Calculate area of rectangles, circles, triangles, trapezoids, and ellipses.

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Volume Calculator

Calculate volume of cubes, spheres, cylinders, cones, and pyramids.

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Quadratic Equation Solver

Solve ax² + bx + c = 0. Find roots, discriminant, and vertex.

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Statistics Calculator

Calculate mean, median, mode, standard deviation, and variance from a data set.

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GCD & LCM Calculator

Find the Greatest Common Divisor and Least Common Multiple of two or more numbers.

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Number Base Converter

Convert between binary, octal, decimal, and hexadecimal number systems.

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Exponent Calculator

Calculate powers, roots, and exponential expressions.

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Permutation & Combination

Calculate permutations (nPr) and combinations (nCr) with factorial support.

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Ratio Calculator

Simplify ratios, find equivalent ratios, and solve proportions.

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Logarithm Calculator

Calculate natural log (ln), common log (log₁₀), and log with custom base.

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Pythagorean Theorem Calculator

Find the missing side of a right triangle using a² + b² = c².

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Circle Calculator

Calculate circle area, circumference, diameter, and radius from any known value.

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Triangle Calculator

Calculate area, angles, and sides of any triangle using various formulas.

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Prime Factorization Calculator

Find prime factors of any number and check if a number is prime.

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Rounding Calculator

Round numbers to nearest integer, decimal places, or significant figures.

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Scientific Notation Calculator

Convert to and from scientific notation (e.g., 3.5 × 10⁴).

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Standard Deviation Calculator

Calculate population and sample standard deviation with step-by-step breakdown.

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Mean, Median, Mode Calculator

Find the mean, median, mode, and range of any data set instantly.

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Z-Score Calculator

Calculate z-scores and find probabilities for normal distributions.

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Confidence Interval Calculator

Calculate confidence intervals for means and proportions.

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Probability Calculator

Calculate probability of events, combinations, and conditional probability.

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Loan EMI Calculator

Calculate monthly EMI, total interest, and payment schedule for any loan.

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Compound Interest Calculator

Calculate compound interest with flexible compounding frequencies.

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Simple Interest Calculator

Calculate simple interest: I = P × R × T.

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SIP Calculator

Systematic Investment Plan calculator: project your wealth growth over time.

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Tip Calculator

Calculate tip amount and split bills between multiple people.

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Discount Calculator

Calculate discount amount, final price, and savings.

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Profit Margin Calculator

Calculate gross profit margin, net margin, and markup percentage.

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ROI Calculator

Calculate Return on Investment with gain/loss analysis.

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Salary Calculator

Convert between hourly, daily, weekly, monthly, and annual salary.

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Mortgage Calculator

Calculate monthly mortgage payments, total interest, and amortization.

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Inflation Calculator

Calculate the effect of inflation on purchasing power over time.

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Break-Even Calculator

Find the break-even point: units and revenue needed to cover costs.

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Savings Goal Calculator

How much to save monthly to reach your financial goal.

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Currency Converter

Convert between major world currencies with real-time exchange rates.

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Auto Loan Calculator

Calculate monthly auto loan payments, total interest, and affordability.

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Credit Card Payoff Calculator

Find out how long it will take to pay off your credit card debt.

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Debt-to-Income Ratio Calculator

Calculate your debt-to-income ratio to assess loan eligibility.

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Refinance Calculator

Compare your current mortgage with a refinanced loan to see potential savings.

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Rent vs. Buy Calculator

Compare the costs of renting versus buying a home over time.

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Present Value Calculator

Calculate the present value of future cash flows and investments.

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Future Value Calculator

Calculate the future value of investments and savings with compound interest.

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Annuity Calculator

Calculate annuity payments, present value, and future value of annuities.

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Retirement Calculator

Estimate how much you need to save for a comfortable retirement.

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401(k) Calculator

Project your 401(k) balance at retirement with employer matching.

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Sales Tax Calculator

Calculate sales tax and total price for any purchase amount.

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