900+ Free Tools
Start typing to search…
Fresh tools we've just added to our collection
Calculate distance between two points in 2D, 3D, or on Earth using latitude and longitude. Free online distance calculator.
Calculate confidence intervals and margin of error for your data with customizable confidence levels. Free online statistics calculator.
Calculate permutations (nPr) and combinations (nCr) instantly with step-by-step results. Free online combinatorics calculator.
Compute comprehensive statistics including mean, standard deviation (population and sample), geometric mean, sum, sum of squares, and more with our free online statistics calculator.
Calculate the minimum sample size needed for your surveys and studies with our free online sample size calculator. Also find margin of error with confidence level options.
Calculate arithmetic, geometric, and Fibonacci number sequences with our free online number sequence calculator. Find nth terms, sums, and generate sequences instantly.
Solve any triangle by entering 3 values (sides and/or angles). Compute area, perimeter, median, inradius, circumradius, and all missing sides and angles.
Calculate any circle value from any other value. Enter radius, diameter, circumference, or area and instantly compute all other circle measurements.
Calculate z-scores from raw scores, mean, and standard deviation. Convert between z-scores and probabilities with our free online z-score calculator.
Calculate probabilities of independent events including union, intersection, complement, and exclusive or. Free online probability calculator with instant results.
Calculate mean, median, mode, and range of any data set. Free online statistics calculator with instant results and detailed analysis.
Calculate the area of rectangles, triangles, circles, trapezoids, ellipses, sectors, and parallelograms. Free online area calculator with instant results.
Free online slope calculator for finding the slope, angle, distance, and equation of a line between two points or from a point and slope.
Free online half-life calculator for radioactive decay. Calculate remaining quantity, initial quantity, elapsed time, or half-life from any three values.
Free online volume calculator for spheres, cones, cubes, cylinders, and other 3D shapes. Calculate volume in multiple units instantly.
Calculate Weight Watchers points for any food using SmartPoints, PointsPlus, or Classic formulas. Estimate your daily points target based on personal factors.
Estimate your blood alcohol concentration using the Widmark formula. Calculate BAC based on gender, weight, drinks consumed, and time.
Free online body type calculator. Determine your body shape (hourglass, pear, apple, rectangle) using bust, waist, and hip measurements with waist-hip ratio.
Free online fat intake calculator. Estimate your recommended daily fat intake based on age, gender, weight, height, and activity level with saturated fat limits.
Free online target heart rate calculator. Calculate your training heart rate zones using Karvonen formula, Borg RPE scale, and multiple max heart rate formulas.
Free online calories burned calculator. Estimate calories burned during walking, running, cycling, swimming, and 100+ activities based on duration and body weight.
Calculate your Lean Body Mass (LBM) using Boer, James, Hume, and Peters formulas. Free online LBM calculator for fitness and medical use.
Calculate your body fat percentage using the US Army circumference-based method. Free online Army body fat calculator for soldiers.
Estimate healthy weight gain during pregnancy based on IOM guidelines. Free online pregnancy weight gain calculator with weekly tracking.
Calculate your BMI and check if you are overweight or obese. Free online overweight calculator with age, gender, height, and weight inputs.
Calculate your BMI and check if it falls in the anorexia risk range. Free online anorexic BMI calculator with age, gender, height, and weight inputs.
Calculate your Body Surface Area (BSA) using multiple formulas including Du Bois, Mosteller, Haycock, and more. Free online BSA calculator for medical and fitness use.
Estimate your glomerular filtration rate using MDRD, CKD-EPI, and Mayo Quadratic formulas. Free online GFR calculator.
Estimate your total daily energy expenditure based on BMR and activity level. Free online TDEE calculator.
Estimate your daily protein needs based on age, gender, weight, height, and activity level. Free online protein calculator.
Estimate your one rep maximum based on weight lifted and repetitions. Free online 1RM calculator with Epley, Brzycki, and Lombardi formulas.
Estimate your daily carbohydrate needs based on age, gender, weight, height, and activity level. Free online carb calculator.
Calculate running, walking, and biking pace from time and distance. Free online pace calculator with pace converter, finish time estimator, and multipoint pace tracking.
Estimate your conception date and fertile window based on due date, last menstrual period, or ultrasound. Plan your pregnancy with our accurate conception calculator.
Calculate your daily macronutrient needs including protein, carbohydrates, and fat based on your age, gender, height, weight, activity level, and fitness goals.
Calculate your UK mortgage monthly payments, total interest, and amortization schedule. Includes stamp duty, home insurance, and other UK-specific costs.
Calculate the future value of your investments with compound interest. Estimate how much your savings will grow over time with periodic deposits.
Calculate the payback period and discounted payback period for your investments. Analyze fixed or irregular cash flows with our easy-to-use financial calculator.
Calculate your home equity loan monthly payments, total interest, and amortization schedule. Estimate your maximum borrowing amount based on home value and LTV ratio.
Calculate FHA loan payments including upfront MIP, annual MIP, property taxes, and insurance. Determine monthly payments and total costs for FHA-insured mortgages.
Analyze rental property investments with purchase costs, operating expenses, income projections, and comprehensive ROI metrics including IRR, cap rate, and cash flow analysis.
Compare your current loan with refinancing options. Calculate monthly payments, total interest savings, and break-even point to decide if refinancing is right for you.
Calculate monthly boat loan payments, total interest, and amortization schedule. Free online boat loan calculator with down payment, trade-in, and tax options.
Calculate your take home pay after federal, state, and FICA taxes. Free online paycheck calculator with 2026 tax brackets and deductions.
Calculate average annual return and cumulative return for multiple investments with different holding periods. Free online average return calculator.
Calculate your front-end and back-end debt-to-income (DTI) ratios to analyze your loan eligibility and financial health.
Calculate monthly auto lease payments based on vehicle price, term, down payment, money factor, and compare auto leasing versus buying.
Estimate and compare Traditional, Roth, SEP, and SIMPLE IRA growth, tax savings, and balances at retirement against regular taxable savings.
Calculate the interest earned, annual percentage yield (APY), and final balance of a Certificate of Deposit (CD) at maturity, including tax options.
Estimate future college tuition and expenses based on current costs, inflation, and savings, and find the monthly savings rate needed to cover college costs.
Calculate the optimal way to pay off multiple debts using the debt avalanche or debt snowball method. Plan your payoff schedule and see how much interest you can save.
Forecast the growth of an annuity with annual or monthly additions during the accumulation phase.
Compare lump sum vs monthly pension, single life vs joint survivor, and working longer options.
Calculate sales tax rate, before-tax price, after-tax price, and tax amount instantly.
Project your 401(k) retirement savings growth and calculate employer match contribution limits.
Calculate how much time and interest you save by making extra payments on your mortgage.
Calculate Canadian mortgage payments with semi-annual compounding and payment frequency options.
Calculate sales commission earnings based on flat rates, tiered structures, or base salary plus commission.
Calculate the present value (PV) of a future cash sum or a stream of periodic annuity payments using customizable discount rates.
Calculate your Home Equity Line of Credit (HELOC) interest-only draw payments and principal plus interest repayment terms.
Find exactly what you need — organized, lightweight, and ready to use
Find the time that produces a specific angle between clock hands
Free online CTC to in-hand salary calculator to calculate your take-home salary from Cost to Company. Estimate net pay after deductions, taxes and contributions.
Generate and preview beautiful tailwind CSS gradient classes
Generate HTML file input markup with common attributes instantly.
Right pad Unicode text with our free online tool. Add padding characters to the right while preserving Unicode integrity and providing detailed analysis.
Find CSV rows with missing or fewer columns than expected. Identify incomplete records in your CSV data instantly in the browser.
Convert Base64 encoded data to XML format instantly. Free online Base64 to XML converter with file upload support.
Calculate the optimal way to pay off multiple debts using the debt avalanche or debt snowball method. Plan your payoff schedule and see how much interest you can save.
Generate favicons, icons, and app icons for all devices. Upload logo or text to create complete favicon packages with installation code.
Generate Dart data classes with fromJson/toJson maps from YAML samples in the browser.
Crop images online with precision. Select any area to crop and download the cropped image instantly.
Remove bullet markers, symbols, numbers, or custom prefixes from the beginning of each item in a list
Generate HTML meta tags for SEO, Open Graph, and Twitter Cards. Free online meta tag generator with real-time preview and copy/download functionality.
Generate terms of the Baum-Sweet binary sequence with configurable count and output separator.
Extract and visualize the Hue, Saturation, and Value color channels from any image with detailed analysis and channel separation
Convert Krutidev Hindi font text to Unicode Devanagari and vice versa with bi-directional conversion
Generate cursed Zalgo-style text with adjustable intensity and placement.
Generate random fractions with customizable ranges and formats. Perfect for math practice, testing, and educational purposes.
Convert octal numbers to their hexadecimal representation in real-time, with step-by-step mathematical decomposition.
Check if a year is a common year (non-leap year) with detailed explanation and common year rules
Calculate the compound annual growth rate (CAGR) of your investments over any period with precise results.
Convert comma-separated values into tab-separated values
Check if a number is a palindrome with our free online palindrome validator. Enter any number to instantly verify if it reads the same forwards and backwards.
Generate set-theoretic Von Neumann ordinals for any integer.
Encrypt and decrypt text using various encryption algorithms. Free online encrypt decrypt tool supporting AES, DES, Triple DES, Rabbit, RC4, and more encryption methods.
Estimate monthly payments, total interest, and payoff schedule for student loans.
Random Email Generator
Encode AVIF images to Base64 or data URLs locally
Convert ASCII text to Data URI format with real-time encoding, MIME type selection, and character validation. Free online ASCII to Data URI converter tool.
Display list items in alternating colors online. Free online tool to colorize list items with customizable color palettes for better visual distinction.
Domain age checker
Website source code viewer
Instantly detect if a website uses WordPress and identify its version. Our free tool helps developers, marketers, and site owners gather crucial CMS information.
Reveal the full, original URL behind a shortened URL.
Generate user-friendly and search-engine-optimized URL slugs for your website
Grab and download the favicon image of any website
Check the response headers sent by the server
Calculate discrete convolution of two sequences with step-by-step results
Subtract two matrices of the same dimensions with step-by-step solutions and detailed explanations.
Calculate the transpose of any matrix with our free online Matrix Transpose Calculator. Perfect for linear algebra, mathematics, and engineering applications.
Calculate the inverse of any square matrix with our free online Matrix Inverse Calculator. Perfect for linear algebra, mathematics, and engineering applications.
Multiply two matrices with step-by-step solutions, dimension validation, and detailed explanations for matrix multiplication operations.
Calculate the determinant of any square matrix with our free online Matrix Determinant Calculator. Perfect for linear algebra, mathematics, and engineering applications.
Calculate and generate Lucas numbers sequence with customizable parameters. Free online tool for mathematical sequences similar to Fibonacci.
Calculate and generate linear recurrence sequences with custom coefficients and initial values
Generate identity matrices of any size with our free online Identity Matrix Generator. Perfect for linear algebra, mathematics education, and matrix operations.
Generate random number matrices with customizable dimensions, value ranges, and formatting options. Perfect for mathematical exercises, data analysis, and educational purposes.
Add two matrices together with our free online Matrix Addition Calculator. Perfect for linear algebra, mathematics education, and matrix operations.
Generate random vectors with customizable dimensions, value ranges, and formatting options. Perfect for linear algebra, machine learning, and mathematical research.
Exciting new mini-tools we're currently cooking up — stay tuned!
Convert HTML file to JSX online
Download and save Instagram videos locally with our Instagram Reel Downloader. No signup required.
Save thumbnails from any reel
Got questions? We've got answers. Simple details about our online toolbox.
We're constantly expanding our toolbox. If you have a custom mini-tool in mind that would make your daily workflow easier, let us know!
