Free Online Calculators
96 tools available
Access 20+ free online calculators for math, finance, percentages, dates, and more. Fast, accurate, and privacy-first. No signup required.
BMR Calculator
Calculate your Basal Metabolic Rate (BMR) instantly. Learn how many calories your body burns at rest. Free, accurate, and easy to use. Try it now!
BMI Calculator
Calculate your Body Mass Index (BMI) instantly. See if you fall into a healthy weight range. Supports metric and imperial units. Try it now!
Cash App Fee Calculator
Calculate Cash App fees for instant deposits, business payments, and credit card transactions. Free calculator with fee breakdowns. Try it now!
Etsy Fee Calculator
Calculate Etsy seller fees including listing, transaction, payment processing, and offsite ads. See your true profit margins. Try it now!
TikTok Money Calculator
Calculate how much TikTokers make based on followers, views, and engagement. Estimate earnings from the Creator Fund and sponsorships.
Fiverr Fee Calculator
Calculate Fiverr fees for sellers and buyers including 20% commission, service fees, and withdrawal costs. See your true earnings!
Finance Calculator
Calculate loan payments, determine affordability, find payoff time, and compare loan scenarios. Essential personal finance calculator with step-by-step results.
Fraction Calculator
Calculate fractions instantly with our free fraction calculator. Add, subtract, multiply, divide, simplify fractions, and convert decimals to fractions with step-by-step solutions.
Venmo Fee Calculator
Calculate Venmo fees for standard transfers, credit cards, instant transfers, and business accounts. See all fee options instantly!
YouTube Money Calculator
Calculate how much YouTubers make from ads based on views and CPM. Estimate daily, monthly, and yearly YouTube earnings!
GST Calculator
Calculate GST instantly with automatic CGST and SGST breakdown. Add or remove GST from any amount for India.
VAT Calculator
Calculate VAT for 20+ countries instantly. Add or remove VAT from prices with accurate standard rates for UK, EU, and worldwide.
Loan Calculator
Calculate monthly payments, total interest, and amortization for mortgages, auto loans, and personal loans.
Investment Calculator
Project your investment growth with initial investment and monthly contributions. See year-by-year breakdown, total returns, and inflation-adjusted value.
ROI Calculator
Calculate return on investment (ROI), annualized ROI, and compare multiple investments. Visual ROI gauge with break-even analysis.
TSP Calculator
Calculate TSP contributions, government match, and retirement savings with our free TSP Calculator. Plan your federal retirement confidently. Try it now!
APY Calculator
Calculate Annual Percentage Yield (APY) and compound interest with our free calculator. Compare savings accounts and maximize your returns. Try it now!
Audiobook Speed Calculator
Calculate audiobook playback time at different speeds (1.5x, 2x, etc.). Find out how long your audiobook will take to finish. Free and easy to use!
Mortgage Calculator
Calculate your monthly mortgage payments, interest costs, and loan terms with our free mortgage calculator. Plan your home purchase confidently. Try it now!
Scientific Calculator
Use our free online scientific calculator for trigonometry, logarithms, and advanced math. Accurate, fast, and works on any device. Try it now!
Tire Size Calculator
Compare tire sizes and calculate dimensions with our free tire size calculator. Visualize differences, check speedometer accuracy, and find the perfect tire size.
Percentage Calculator
Calculate percentages easily. Find percentage of a number, increase, decrease, and difference.
Date Calculator
Calculate the difference between dates or add/subtract time from a date.
Discount Calculator
Calculate discounts, savings, and final prices. Enter percentage or amount off.
Age Calculator
Calculate your exact age in years, months, days, hours. See days until next birthday.
Grade Calculator
Calculate weighted grades, GPA, and letter grades. Perfect for students and teachers.
Tip Calculator
Calculate tips and split bills easily. Quick tip percentage presets included.
Aspect Ratio Calculator
Calculate and maintain aspect ratios for images and videos. Scale dimensions proportionally.
Hour Calculator
Add and subtract hours and minutes for time tracking and calculations.
Average Calculator
Calculate average, mean, median, sum and statistics from a list of numbers.
Time Calculator
Calculate time difference between two times or add hours and minutes.
PayPal Fee Calculator 2024
Calculate PayPal fees instantly for domestic, international, and business transactions. Multi-currency support, reverse calculation. Know what you'll pay!
Stripe Fee Calculator 2024
Calculate Stripe fees instantly for standard, international, and in-person transactions. Multi-currency support, PayPal comparison. Know what you'll pay!
Death Calculator
Estimate when you might die based on lifestyle, demographics & scientific data. See your remaining years, weeks, and heartbeats. Entertainment only.
Anniversary Calculator
Count days since your special date. Track upcoming anniversaries, milestones, and never forget an important day again!
Deadline Calculator
Calculate days until deadlines, track progress with milestones, manage projects. Exclude weekends, see working days. Never miss a deadline!
CIDR Calculator
Calculate subnet masks, network addresses, host ranges from CIDR notation. IP classification, binary masks. Free networking tool.
Interest Rate Calculator
Calculate interest rate from principal and final amount, find time to reach a target, and compare APR vs APY with different compounding frequencies.
Days Calculator
Calculate the number of days between two dates. See weeks, months, workdays, and weekends. Quick range presets. 100% free.
Expiry Date Calculator
Calculate expiration dates from manufacturing date and shelf life. Status indicators for expired, expiring soon, and valid products. 100% free.
Playback Speed Calculator
Calculate video and podcast duration at different playback speeds. See time saved at 1.5x, 2x, and more.
GPA Calculator
Calculate cumulative GPA with letter grades and credit hours. Free weighted GPA calculator using a standard 4.0 scale.
Sales Tax Calculator
Calculate sales tax quickly. Add tax to subtotal or remove tax from a total with accurate breakdown.
Compound Interest Calculator
Calculate compound interest with regular contributions. Compare compounding frequencies, see year-by-year growth, Rule of 72, and APY.
Inflation Calculator
Estimate how purchasing power changes over time using an annual inflation rate. Compare values between any two years.
Calorie Calculator
Calculate maintenance calories, fat-loss calories, and muscle-gain targets using age, weight, height, and activity level.
Log Calculator (Logarithm)
Calculate logarithms with any base. Solve for base, argument, or result in log_b(x) = y. Supports base 10, natural log (ln), binary log, and custom bases.
Circle Calculator
Calculate circle properties instantly. Enter radius, diameter, circumference, or area and get all other measurements with step-by-step solutions.
Volume Calculator
Calculate the volume and surface area of spheres, cylinders, cones, cubes, rectangular tanks, capsules, ellipsoids, and pyramids. Step-by-step solutions with unit conversions.
Triangle Calculator
Calculate missing sides, angles, area, and perimeter of any triangle. Supports SSS, SAS, ASA/AAS modes with step-by-step solutions using Law of Cosines and Law of Sines.
Exponent Calculator
Calculate exponents, powers, and roots online. Supports positive, negative, and fractional exponents. Solve for base or exponent with step-by-step solutions.
Distance Calculator
Calculate distance between two points in 2D or 3D space, shortest distance from a point to a line, and great-circle distance between cities using the Haversine formula. Step-by-step solutions included.
Slope Calculator
Calculate slope between two points instantly. Find distance, midpoint, angle, and line equations in all forms with step-by-step solutions and visual graph.
Area Calculator
Calculate the area of circles, rectangles, triangles, trapezoids, parallelograms, ellipses, and sectors. Step-by-step solutions with unit conversion.
Pythagorean Theorem Calculator
Calculate the missing side of a right triangle using the Pythagorean theorem (a² + b² = c²). Find hypotenuse, leg, or verify right triangles with step-by-step solutions.
Quadratic Formula Calculator
Solve quadratic equations instantly. Find real and complex roots, discriminant, vertex, and graph properties. Step-by-step solutions with visual explanation.
Root Calculator
Calculate square roots, cube roots, and nth roots of any number. Simplify radical forms with step-by-step solutions and reference tables.
Surface Area Calculator
Calculate the surface area of spheres, cones, cubes, cylinders, rectangular prisms, pyramids, and triangular prisms. Step-by-step solutions with lateral and base area breakdowns.
Standard Deviation Calculator
Calculate standard deviation, variance, mean, median, mode, and more. Supports population and sample standard deviation with step-by-step solutions.
Statistics Calculator
Calculate mean, median, mode, standard deviation, variance, skewness, kurtosis, quartiles, z-scores, and more. Includes box plot, frequency distribution, and stem-and-leaf display. Free online tool.
Permutation and Combination Calculator
Calculate combinations (nCr), permutations (nPr), and factorials instantly. Supports with and without repetition. Step-by-step solutions for probability, lottery, and counting problems.
Probability Calculator
Calculate probabilities for two events, combinations & permutations, binomial distribution, and normal distribution. Free online tool with step-by-step solutions.
Mean Median Mode Range Calculator
Calculate mean, median, mode, and range instantly with step-by-step solutions. Includes geometric mean, harmonic mean, weighted mean, and visual frequency distributions.
Z
Calculate z-scores instantly from raw scores, convert z-scores to raw scores, and find probabilities between two values. Includes bell curve visualization, percentile rankings, and step-by-step solutions.
Confidence Interval Calculator
Calculate confidence intervals for population means (known/unknown SD) and proportions with step-by-step solutions. Supports Z-distribution and t-distribution.
P
Calculate p-values instantly for Z-tests, T-tests, and Chi-Square tests. Visual bell curves, significance level comparisons, critical values, and clear hypothesis testing interpretations. Free online tool.
Sample Size Calculator
Calculate the required sample size for estimating means and proportions. Includes margin of error calculator, finite population correction, confidence level selection, and step-by-step explanations.
GCF Calculator
Calculate the Greatest Common Factor (GCF/GCD) of two or more numbers instantly. Step-by-step Euclidean algorithm, prime factorization, common factors, and all factors displayed. Free online tool.
Hex Calculator
Perform hexadecimal arithmetic (add, subtract, multiply, divide, AND, OR, XOR), convert between hex, decimal, binary, octal and RGB, and pick hex colors with HSL values. Free online hex calculator.
LCM Calculator
Calculate the Least Common Multiple (LCM) of two or more numbers instantly. Step-by-step prime factorization, GCD method breakdown, all factors displayed, and quick examples. Free online tool.
Big Number Calculator
Perform arithmetic on numbers of any size with BigInt. Calculate factorial, power, compare big numbers, and more. Supports addition, subtraction, multiplication, division, modulo with formatted output and scientific notation.
Number Sequence Calculator
Identify number sequence patterns, generate arithmetic, geometric, Fibonacci, triangular, square, cubic, prime, and factorial sequences, and find the nth term instantly.
Right Triangle Calculator
Solve any right triangle instantly. Enter any 2 values to calculate all sides, angles, area, perimeter, altitude, and trigonometric ratios. Free online tool with step-by-step solutions.
Scientific Notation Calculator
Convert numbers to and from scientific notation, perform arithmetic operations, and compare numbers. Supports e-notation and engineering notation with step-by-step solutions.
Common Factor Calculator
Find all common factors of two or more numbers. Calculate the greatest common factor (GCF) with step-by-step prime factorization comparison.
Factor Calculator
Find all factors, factor pairs, and prime factorization of any number. Includes number classification and step-by-step solutions.
Prime Factorization Calculator
Find the prime factorization of any number with visual factor tree, exponent form, and step-by-step division. Includes prime number checker.
Binary Calculator
Perform binary arithmetic (add, subtract, multiply, divide, AND, OR, XOR) and convert between binary, decimal, hexadecimal, and octal number systems.
Percent Error Calculator
Calculate percent error, absolute error, relative error, and accuracy between experimental and theoretical values. Step-by-step solutions with examples.
Rounding Calculator
Round numbers using 5 different methods: half up, half down, ceiling, floor, and banker's rounding. Supports decimal places and significant figures.
Matrix Calculator
Perform matrix addition, subtraction, multiplication, find determinant, transpose, and inverse. Supports 2x2 and 3x3 matrices with step-by-step solutions.
Half
Calculate half-life, remaining quantity, or elapsed time for radioactive decay and exponential decay. Includes decay table and step-by-step solutions.
Ratio Calculator
Simplify ratios, solve proportions, convert ratios to fractions and percentages, and compare ratios. Step-by-step solutions with cross multiplication.
Long Division Calculator
Perform long division with visual step-by-step work. Shows quotient, remainder, decimal form, and repeating decimal detection with adjustable precision.
Basic Calculator
Free online basic calculator with standard arithmetic operations, percentage, and history. Supports keyboard input and shows calculation history.
Interest Calculator
Calculate simple and compound interest. Compare growth over time with different compounding frequencies. Year-by-year breakdown and APY calculation.
CD Calculator
Calculate CD earnings with different terms and compounding frequencies. Compare CD options, estimate early withdrawal penalties, and explore CD laddering.
Savings Calculator
Project your savings growth with deposits and interest. Track progress toward savings goals, calculate time to reach targets, and compare strategies.
Mutual Fund Calculator
Calculate mutual fund returns with SIP and lump sum investments. Factor in expense ratios, inflation, and see year-by-year growth projections.
Simple Interest Calculator
Calculate simple interest and solve for any variable: principal, rate, time, or interest amount. Step-by-step solutions with compound interest comparison.
Bond Calculator
Calculate bond prices, yield to maturity (YTM), and compare bonds. Determine premium vs discount bonds and analyze coupon payments.
IRR Calculator
Calculate Internal Rate of Return (IRR) and Net Present Value (NPV) from cash flows. NPV profile at different discount rates with step-by-step solutions.
Present Value Calculator
Calculate present value of future cash flows. Discount future earnings to today's value for investment decisions.
Payback Period Calculator
Calculate payback period for investments with even or uneven cash flows. Includes discounted payback period with cumulative cash flow analysis.
Average Return Calculator
Calculate arithmetic mean, geometric mean (CAGR), total return, and volatility from annual returns. See year-by-year cumulative growth.
Future Value Calculator
Calculate future value of single amounts, regular deposits (annuities), and combined strategies. Growth projections with compounding at different rates.