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💰 Finance Calculators (29)

Loan CalculatorCalculate the monthly payment, total interest and total cost of any fixed-rate…Mortgage CalculatorEstimate your full monthly mortgage payment including principal, interest, property…Amortization CalculatorSee how your loan balance falls year by year and how much of each payment goes to…Auto Loan CalculatorWork out your monthly car payment after down payment, trade-in and sales tax.Compound Interest CalculatorProject how an investment grows with compound interest and optional monthly…Simple Interest CalculatorCalculate simple interest and the total amount owed or earned without compounding.Investment CalculatorSee what regular monthly investing (SIP / DCA) can grow to at an expected annual return.Savings Goal CalculatorFind out how much you need to save each month to hit a savings goal by a deadline.Retirement CalculatorEstimate your retirement nest egg and the yearly income it could safely support.ROI CalculatorCalculate return on investment (ROI) and annualized return from your cost and final…CAGR CalculatorFind the compound annual growth rate (CAGR) between a starting and ending value.Inflation CalculatorSee how inflation raises future prices and erodes the purchasing power of your money.Present Value CalculatorDiscount a future amount back to today’s value at a given rate of return.Future Value CalculatorCompute the future value of a lump sum growing at a fixed annual rate.NPV CalculatorCalculate net present value (NPV) of a series of cash flows, with the initial…IRR CalculatorFind the internal rate of return (IRR) — the discount rate that makes NPV equal zero.Salary to Hourly CalculatorConvert an annual salary into hourly, daily, weekly and monthly pay.Hourly to Salary CalculatorConvert an hourly wage into annual, monthly and weekly income.Overtime Pay CalculatorCalculate regular pay, overtime pay and total gross pay for a pay period.Credit Card Payoff CalculatorFind how long it takes to pay off a credit card balance and the total interest you…Debt-to-Income Ratio CalculatorCalculate your debt-to-income (DTI) ratio, a key number lenders use for mortgages and…Rent Affordability CalculatorEstimate how much rent you can afford using the 30% of gross income guideline.House Affordability CalculatorEstimate the home price you can afford with the 28/36 rule, your debts and current…Emergency Fund CalculatorFind your emergency fund target and how long it will take to build it.Net Worth CalculatorAdd up assets and liabilities to calculate your net worth.Effective Annual Rate CalculatorConvert a nominal APR into the effective annual rate (APY) for any compounding…Rule of 72 CalculatorEstimate how many years it takes money to double, and compare with the exact answer.Dividend Yield CalculatorCalculate dividend yield and annual dividend income from your shares.Stock Profit CalculatorCalculate profit or loss and percentage return on a stock trade after fees.

📈 Business Calculators (9)

Break-Even CalculatorFind how many units you must sell to cover fixed costs and start making profit.Profit Margin CalculatorCalculate gross profit, profit margin and markup from revenue and cost.Markup CalculatorSet a selling price from your cost and desired markup percentage.Margin to Price CalculatorFind the selling price that achieves a target gross margin on a known cost.VAT CalculatorAdd or remove VAT/GST from any amount at any rate.Commission CalculatorCalculate sales commission earnings from a sale amount and commission rate.Freelance Hourly Rate CalculatorWork out the hourly rate you need to charge as a freelancer to hit your income goal.Straight-Line Depreciation CalculatorCalculate yearly straight-line depreciation and book value of an asset.Payback Period CalculatorFind how long it takes for an investment to pay for itself from annual cash flow.

📣 Marketing Calculators (11)

CPM CalculatorCalculate CPM (cost per thousand impressions) for advertising campaigns.CPC CalculatorCalculate average cost per click (CPC) for paid search and social ads.CTR CalculatorCalculate click-through rate (CTR) for ads, emails or search results.Conversion Rate CalculatorCalculate the conversion rate of a landing page, store or funnel step.ROAS CalculatorMeasure return on ad spend (ROAS) and profit from an advertising campaign.Customer Acquisition Cost CalculatorCalculate customer acquisition cost (CAC) from marketing and sales spend.Customer Lifetime Value CalculatorEstimate customer lifetime value (LTV) and compare it with acquisition cost.AdSense Revenue CalculatorEstimate website ad earnings from pageviews, page CTR and cost per click.YouTube Earnings CalculatorEstimate YouTube ad revenue from views and your channel’s RPM.Engagement Rate CalculatorCalculate social media engagement rate by followers for a post or account.Email Open Rate CalculatorCalculate email open rate, click rate and click-to-open rate for a campaign.

🧾 Everyday Calculators (24)

Discount CalculatorCalculate the sale price and how much you save with a percentage discount.Double Discount CalculatorWork out the real total discount when two percentage discounts are stacked.Sales Tax CalculatorAdd sales tax to a price and see the tax amount and final total.Reverse Sales Tax CalculatorBack out the pre-tax price and tax portion from a total that already includes sales tax.Tip CalculatorCalculate the tip, the total bill and each person’s share.Split Bill CalculatorSplit a restaurant or shared bill evenly, including tax and tip.Unit Price CalculatorCompare two products by unit price to find the better deal.Percent Off CalculatorFind what percentage discount you are getting from the original and sale price.Electricity Cost CalculatorCalculate how much an appliance costs to run per day, month and year.Dice RollerRoll any number of dice with any number of sides, with a fair random generator.Coin FlipFlip a fair virtual coin one or many times and see the heads/tails tally.Grade Percentage CalculatorConvert a test score into a percentage and letter grade.GPA CalculatorCalculate your GPA from course grade points and credit hours.Recipe ScalerScale every ingredient in a recipe up or down to a new number of servings.Cups to Grams CalculatorConvert cups of common baking ingredients to grams using ingredient densities.Coffee Ratio CalculatorCalculate coffee grounds and water for any brew ratio.Pizza Dough CalculatorCalculate flour, water, salt and yeast for pizza dough by baker’s percentages.Turkey Cooking Time CalculatorEstimate roasting time for a turkey by weight at 325 °F.Dog Age CalculatorConvert a dog’s age into human years using the epigenetic clock formula.Cat Age CalculatorConvert a cat’s age into human years using the AAHA/AAFP life-stage chart.Savings Rate CalculatorCalculate what percentage of your income you save each month.50/30/20 Budget CalculatorSplit take-home pay into needs, wants and savings with the 50/30/20 rule.Shoe Size ConverterConvert US men’s shoe sizes to UK, EU and centimeter sizes.Random Name PickerPick one or more random winners from a list of names.

❤️ Health & Fitness Calculators (21)

BMI CalculatorCalculate your body mass index (BMI) from weight in kilograms and height in centimeters.BMI Calculator (lb, ft, in)Calculate BMI using US units — pounds, feet and inches.BMR CalculatorEstimate basal metabolic rate — calories your body burns at complete rest — with the…TDEE CalculatorEstimate total daily energy expenditure (maintenance calories) from your BMR and…Calorie CalculatorEstimate daily calories to maintain your weight, with gentle targets for gradual loss…Body Fat CalculatorEstimate body fat percentage using the U.S. Navy circumference method.Ideal Weight CalculatorEstimate ideal body weight with the Devine, Robinson, Miller and Hamwi formulas.Lean Body Mass CalculatorEstimate lean body mass with the Boer formula.Water Intake CalculatorEstimate a daily water intake target from body weight and exercise.Protein Intake CalculatorEstimate daily protein needs based on body weight and activity goal.Macro CalculatorSplit a daily calorie target into protein, carbohydrate and fat grams.Waist-to-Height Ratio CalculatorCalculate your waist-to-height ratio, a simple screening measure of central body fat.Waist-to-Hip Ratio CalculatorCalculate waist-to-hip ratio and compare it with WHO guidance.Heart Rate Zone CalculatorFind your maximum heart rate and five training zones using the Karvonen method.Running Pace CalculatorCalculate running pace per kilometer and per mile, plus average speed, from distance…Calories Burned CalculatorEstimate calories burned during exercise using MET values from the Compendium of…Steps to Distance CalculatorConvert a step count into kilometers and miles using your stride length.One Rep Max CalculatorEstimate your one-rep max from a weight and reps performed, using the Epley and…Pregnancy Due Date CalculatorEstimate a pregnancy due date from the first day of the last menstrual period…Sleep CalculatorFind bedtimes that let you wake up between 90-minute sleep cycles.Wake Up Time CalculatorFind the best times to wake up if you go to bed now or at a chosen time.

➗ Math Calculators (48)

📊 Statistics Calculators (18)

📐 Geometry Calculators (26)

📅 Date & Time Calculators (15)

Age CalculatorCalculate exact age in years, months and days, plus total days and next birthday.Days Between Dates CalculatorCount the days, weeks and months between two dates.Add Days to Date CalculatorAdd or subtract days, weeks or months from a date.Business Days CalculatorCount working days (Monday–Friday) between two dates.Day of the Week CalculatorFind what day of the week any date falls on, past or future.Week Number CalculatorFind the ISO-8601 week number for any date.Countdown CalculatorCount the days, weeks and months until an upcoming date or event.Leap Year CheckerCheck whether a year is a leap year and find the next leap years.Time Duration CalculatorCalculate the duration between two clock times, including overnight shifts.Time Card CalculatorTotal weekly work hours from daily hours and calculate gross pay.Unix Timestamp ConverterConvert a Unix (epoch) timestamp to a human-readable UTC date and time.Date to Unix TimestampConvert a calendar date (UTC midnight) into a Unix timestamp.Hours and Minutes to DecimalConvert hours and minutes into decimal hours for payroll and billing.Decimal Hours to Hours and MinutesConvert decimal hours (like 7.75) into hours and minutes.Birthday CalculatorFind the weekday you were born, your zodiac sign and days until your next birthday.

⚛️ Physics & Science Calculators (28)

Speed CalculatorCalculate average speed from distance and time.Distance Calculator (Speed × Time)Calculate distance traveled from speed and time.Travel Time CalculatorCalculate how long a trip takes from distance and average speed.Acceleration CalculatorCalculate acceleration from change in velocity over time.Force Calculator (F = ma)Calculate force from mass and acceleration using Newton’s second law.Kinetic Energy CalculatorCalculate the kinetic energy of a moving object.Potential Energy CalculatorCalculate gravitational potential energy from mass and height.Momentum CalculatorCalculate linear momentum from mass and velocity.Work CalculatorCalculate mechanical work done by a force over a distance.Power Calculator (Work ÷ Time)Calculate power from work done and time taken.Density CalculatorCalculate density from mass and volume, and compare it with water.Pressure Calculator (F ÷ A)Calculate pressure from force and area.Ohm’s Law CalculatorSolve Ohm’s law for voltage, current, resistance and power.Electrical Power CalculatorCalculate electrical power in watts from voltage and current.Watts to Amps CalculatorConvert watts to amps at a given voltage.Amps to Watts CalculatorConvert amps to watts at a given voltage.Series & Parallel Resistor CalculatorCalculate total resistance of resistors in series and in parallel.Voltage Divider CalculatorCalculate the output voltage of a two-resistor voltage divider.Wavelength to Frequency CalculatorConvert between wavelength and frequency for light and radio waves.Half-Life CalculatorCalculate how much of a substance remains after radioactive decay.Free Fall CalculatorCalculate fall time and impact velocity of an object dropped from a height (no air…Projectile Motion CalculatorCalculate range, max height and flight time of a projectile launched from ground level.Ideal Gas Law CalculatorSolve PV = nRT for pressure given moles, temperature and volume.Molarity CalculatorCalculate the molarity of a solution from mass, molar mass and volume.Dilution Calculator (C1V1 = C2V2)Find the volume of stock solution needed to make a dilution.Heat Index CalculatorCalculate the heat index (“feels like” temperature) from air temperature and humidity.Wind Chill CalculatorCalculate wind chill temperature from air temperature and wind speed.Dew Point CalculatorCalculate dew point from temperature and relative humidity (Magnus formula).

🏠 Home & Construction Calculators (19)

🚗 Auto & Travel Calculators (11)

Rideshare Driver Earnings CalculatorEstimate rideshare or delivery driver profit per hour after fuel and vehicle costs.Fuel Cost CalculatorCalculate the fuel cost of a road trip from distance, MPG and gas price.MPG CalculatorCalculate your car’s real fuel economy from miles driven and gallons used.Fuel Consumption Calculator (L/100 km)Calculate fuel consumption in liters per 100 km.EV Charging Cost CalculatorCalculate the cost to charge an electric vehicle and its cost per mile.Car Depreciation CalculatorEstimate how much a car will be worth after a number of years.Cost Per Mile CalculatorCalculate the true cost per mile of owning and driving a vehicle.Mileage Reimbursement CalculatorCalculate mileage reimbursement or deduction at a per-mile rate.Road Trip Time CalculatorEstimate total road-trip time including driving, stops and overnight rests.Tire Size CalculatorCalculate tire diameter, circumference and revolutions per mile from a size like…Payload CalculatorCheck remaining payload capacity from GVWR, curb weight and load.

✍️ Text Tools (52)

🧑‍💻 Developer Tools (38)

Base64 EncodeEncode text to Base64 (UTF-8 safe).Base64 DecodeDecode Base64 (or Base64URL) back to readable text.URL EncodePercent-encode text for safe use in URLs and query strings.URL DecodeDecode percent-encoded URLs and query strings.HTML Entity EncoderEscape special characters into HTML entities.HTML Entity DecoderConvert HTML entities back into readable characters.JSON FormatterFormat and pretty-print JSON with your choice of indentation, and catch syntax errors.JSON MinifierMinify JSON by removing whitespace.JSON ValidatorValidate JSON and see the exact parse error if it is invalid.CSV to JSON ConverterConvert CSV with a header row into a JSON array of objects.JSON to CSV ConverterConvert a JSON array of objects into CSV.CSV to HTML TableConvert CSV data into clean HTML table markup.CSV to Markdown TableConvert CSV into a Markdown table for READMEs and docs.CSS MinifierMinify CSS by removing comments and unnecessary whitespace.CSS BeautifierFormat minified CSS into readable, indented code.HTML MinifierMinify HTML by removing comments and whitespace between tags.JavaScript Comment RemoverStrip comments and blank lines from JavaScript safely (strings are preserved).MD5 Hash GeneratorGenerate the MD5 hash of any text (UTF-8).SHA-1 Hash GeneratorGenerate the SHA-1 hash of any text.SHA-256 Hash GeneratorGenerate the SHA-256 hash of any text.SHA-384 Hash GeneratorGenerate the SHA-384 hash of any text.SHA-512 Hash GeneratorGenerate the SHA-512 hash of any text.CRC32 Checksum CalculatorCalculate the CRC-32 checksum of text.Text to Binary ConverterConvert text into 8-bit binary (UTF-8 bytes).Binary to Text ConverterConvert 8-bit binary back into readable text.Text to Hex ConverterConvert text into hexadecimal byte values.Hex to Text ConverterDecode hexadecimal byte values into text.Text to ASCII CodesConvert characters to their ASCII / Unicode code point numbers.ASCII Codes to TextConvert ASCII / Unicode code point numbers back to characters.URL ParserBreak a URL into protocol, host, path, query parameters and fragment.Regex TesterTest a regular expression against text and list every match with its position.Text Diff CheckerCompare two texts line by line and see what was added or removed.Password GeneratorGenerate strong, random passwords with a cryptographically secure generator.Password Strength CheckerCheck how strong a password is and how long it would take to brute-force. Nothing…UUID GeneratorGenerate random version-4 UUIDs (GUIDs) in bulk.Random String GeneratorGenerate random strings and tokens from custom character sets.Email ValidatorCheck whether email addresses are correctly formatted (syntax check).JSON Tree ViewerList every key path and value in a JSON document — handy for APIs.

🔎 SEO & Marketing Tools (15)

Slug GeneratorConvert titles into clean, SEO-friendly URL slugs.Readability Score CheckerScore text with Flesch Reading Ease and Flesch-Kincaid Grade Level.Keyword Density CheckerCheck how often a keyword appears in your content and see top one-, two- and…Meta Tag GeneratorGenerate SEO title, description, canonical, robots and Open Graph meta tags.Open Graph Tag GeneratorGenerate Open Graph and Twitter Card tags so links look great when shared.Robots.txt GeneratorGenerate a robots.txt file with disallow rules and your sitemap location.UTM Link BuilderBuild campaign-tagged URLs with UTM parameters for Google Analytics.SERP Snippet PreviewPreview how your title and meta description may look in Google results and check their…FAQ Schema GeneratorGenerate FAQPage JSON-LD structured data from questions and answers.Local Business Schema GeneratorGenerate LocalBusiness JSON-LD structured data to strengthen local SEO..htaccess Redirect GeneratorGenerate Apache .htaccess 301 redirects, HTTPS and www rules.Mailto Link GeneratorCreate a mailto: link with subject, CC and body pre-filled.WhatsApp Link GeneratorCreate a click-to-chat WhatsApp link with a pre-filled message.Hashtag GeneratorTurn keywords and phrases into clean, deduplicated hashtags.Title Tag Length CheckerCheck SEO title tags (one per line) for length and truncation risk.

🎨 Color Tools (10)

HEX to RGB ConverterConvert HEX color codes to RGB and HSL values.RGB to HEX ConverterConvert RGB color values to a HEX color code.RGB to HSL ConverterConvert RGB values to HSL (hue, saturation, lightness).HSL to RGB ConverterConvert HSL color values to RGB and HEX.HEX to CMYK ConverterConvert HEX colors to CMYK percentages for print.CMYK to RGB ConverterConvert CMYK percentages to RGB and HEX for screens.Color Contrast CheckerCheck WCAG 2.x contrast ratio between text and background colors for accessibility.Color Shades GeneratorGenerate tints and shades of any color from light to dark.Color Palette GeneratorGenerate complementary, triadic, analogous, split and tetradic color schemes.Color MixerBlend two colors together at any ratio.

📏 Length Converters (57)

⚖️ Weight Converters (43)

🧪 Volume Converters (57)

🗺️ Area Converters (43)

🚀 Speed Converters (21)

⏱️ Time Converters (31)

💾 Data Storage Converters (43)

🌡️ Pressure Converters (31)

⚡ Energy Converters (31)

🔌 Power Converters (13)

📐 Angle Converters (7)

Angle ConverterConvert any angle unit to all others at once — °, rad, gon.Degree to RadianConvert degrees (°) to radians (rad) instantly with the exact formula, a conversion…Degree to GradianConvert degrees (°) to gradians (gon) instantly with the exact formula, a conversion…Radian to DegreeConvert radians (rad) to degrees (°) instantly with the exact formula, a conversion…Radian to GradianConvert radians (rad) to gradians (gon) instantly with the exact formula, a conversion…Gradian to DegreeConvert gradians (gon) to degrees (°) instantly with the exact formula, a conversion…Gradian to RadianConvert gradians (gon) to radians (rad) instantly with the exact formula, a conversion…

📡 Frequency Converters (21)

🏋️ Force Converters (21)

🌡️ Temperature Converters (13)

⛽ Fuel Economy Converters (13)