All Tools

Calculate how your savings grow with compound interest over time.

Calculate monthly mortgage payments, total cost, and amortization.

Calculate monthly repayments and total interest for any loan.

Calculate tip amount and split the bill among friends.

Add or remove VAT/tax from any price instantly.

Calculate sale price after a percentage or flat discount.

Calculate return on investment for any purchase or project.

Convert between hourly, daily, monthly, and annual salaries.

Calculate the inflation-adjusted value of money over time using historical US CPI data.

Calculate your Financial Independence number and how many years until you can retire early.

Calculate how long to reach your savings goal, or how much you need to save each month.

Calculate how long to pay off credit card debt and how much interest you can save by paying more.

Calculate your ideal emergency fund size based on your monthly expenses.

Calculate your Body Mass Index and see what category you fall in.

Calculate your Basal Metabolic Rate — calories burned at rest.

Calculate daily calorie needs based on your activity level.

Find your ideal body weight range based on height and gender.

Estimate body fat percentage using measurements.

Find percentages, percentage change, and percentage of totals.

Full scientific calculator with trig, logs, and more.

Add, subtract, multiply, and divide fractions with step-by-step results.

Calculate mean, median, mode, and range from a list of numbers.

Generate random numbers within any range, with or without duplicates.

Convert between meters, feet, miles, km, inches, and more.

Convert between kg, lbs, stones, ounces, and more.

Convert between Celsius, Fahrenheit, and Kelvin.

Convert km/h, mph, m/s, knots, and more.

Convert bytes, KB, MB, GB, TB instantly.

Convert between 50+ world currencies with live exchange rates.

Convert between binary, octal, decimal, and hexadecimal.

Convert MPG (US/UK), L/100km, and km/L with tank range and fuel cost calculator.

Convert shoe sizes between US Men, US Women, UK, EU, CM, and JP sizing.

Convert Pascal, kPa, MPa, Bar, PSI, atm, mmHg, inHg, and more.

Convert Joules, calories, kWh, BTU, eV, and more energy units.

Calculate exact age in years, months, and days from birthdate.

Find the number of days, weeks, or months between two dates.

Convert between seconds, minutes, hours, days, weeks, months, years.

See the current time in major cities and timezones around the world.

Convert a specific date and time between any two timezones.

Count down to any future date or event with days, hours, minutes, and seconds.

Scale any recipe up or down by servings count.

Convert cups, tablespoons, teaspoons, ml, oz, and grams.

Calculate area of rectangles, circles, triangles, and more.

Calculate volume of cubes, cylinders, spheres, and more.

Calculate concrete volume needed for slabs, footings, columns.

Calculate how much paint you need for walls and ceilings.

Calculate flooring, tile or carpet needed for any room with waste factor.

Calculate posts, panels and materials needed for fencing any perimeter.

Calculate volume, weight and cost of gravel, mulch, sand or topsoil.

Calculate how many wallpaper rolls you need for a room.

Calculate board feet and lumber quantities for any project.

Calculate stair riser height, tread count and stringer length to building code.

Calculate roof area, squares, shingles, and underlayment for any roof shape.

Calculate drywall sheets, screws, joint compound, and tape for any room.

Find your public IP address, location, ISP, and connection info.

Calculate subnet mask, network address, broadcast, and host range.

Look up DNS records (A, AAAA, MX, TXT, CNAME) for any domain.

Check if a port is open or closed on any host.

Convert IP addresses between decimal, binary, hex, and integer.

Generate secure random passwords with custom rules and strength meter.

Calculate weighted GPA and cumulative GPA by course.

Convert colors between HEX, RGB, HSL, HSB, and CMYK formats.

Count words, characters, sentences, reading time and analyze text.

Compare price per unit to find the best value product.

Generate MD5, SHA-1, SHA-256 and SHA-512 hashes from text or files.

Encode and decode Base64 text, URLs and files including image preview.

Encode and decode URLs and query parameters with component breakdown.

Convert text to Morse code and back with audio playback.

Find the Least Common Multiple and Greatest Common Divisor with step-by-step solution.

Solve ax² + bx + c = 0 with step-by-step working and parabola sketch.

Find out which generation you belong to based on your birth year.

Convert your pet's age to human years — dogs, cats, rabbits, hamsters, guinea pigs, parrots, horses, and tortoises.

Convert numbers to Roman numerals and back, with step-by-step breakdown.

Convert text between UPPER, lower, Title, camelCase, snake_case and more.

Generate Lorem Ipsum placeholder text by paragraphs, sentences or words.

Calculate how long it takes to read or speak any text.

Format, minify, and validate JSON with syntax highlighting and detailed error info.

Calculate your daily water intake based on weight, activity and climate.

Calculate calories burned during 50+ activities using MET values.

Calculate your daily protein, carbs and fat targets based on your goal.

Check your blood pressure category and understand what it means for your health.

Calculate your 5 training heart rate zones using the Karvonen formula.

Estimate your Blood Alcohol Content using the Widmark formula.

Calculate your waist-to-hip ratio and health risk category using WHO standards.

Convert Unix timestamps to dates and back, with live current timestamp.

Count business days between dates or add working days to a date.

Calculate total work hours and pay from clock-in/out times.

Online stopwatch with lap times and countdown timer with alarm.

Look up domain registration info, expiry date and nameservers.

Calculate your estimated due date from your last period, conception date, or IVF transfer.

Find your ovulation day and fertile window based on your cycle length.

Find the best bedtime or wake time based on 90-minute sleep cycles.

Estimate your VO2 max fitness level using multiple test methods.

Calculate your 1RM from any weight and rep count using multiple formulas.

Find out your love compatibility percentage — just for fun!