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Convert kilograms to pounds (kg to lbs) instantly

Quickly convert Celsius to Fahrenheit (°C to °F)

Convert centimeters to feet and inches instantly

Convert miles to kilometers (mi to km) instantly

Convert inches to centimeters (in to cm) instantly

Convert 150+ currencies with live exchange rates.

Convert time between any two world timezones instantly.

Convert liters to gallons (L to gal) instantly

Free color code converter — convert between HEX, RGB, HSL, and HSV instantly with live color preview

Convert integers to Roman numerals (1-3999) and vice versa instantly

Convert US cups to milliliters (cups to ml) instantly

Convert fluid ounces to milliliters (fl oz to ml) instantly

Convert feet to meters (ft to m) instantly

Convert acres to square meters (m²) and other area units instantly

Convert hectares to acres instantly

Convert horsepower (hp) to kilowatts (kW) instantly

Convert numbers between binary, octal, decimal, and hexadecimal bases instantly

Convert PSI to Bar instantly

Convert tablespoons (tbsp) to milliliters (ml) instantly

Calculate Body Mass Index (BMI) from height and weight

Calculate monthly loan payment, total interest, and full amortization schedule.

Calculate tip amount, total bill, and split evenly among your group instantly

Estimate body fat percentage using the US Navy method from neck, waist, and hip measurements

Project your nest egg and monthly retirement income.

Calculate monthly PITI payment with amortization schedule.

Find your fertile window and ovulation date instantly.

Exact age in years, months, days, and more.

Calculate daily calorie needs by age, weight, and activity level.

Calculate investment growth with compound interest over time.

Days, weeks, months, and years between two dates.

Find sale price and savings from any discount percentage.

Estimated due date from last menstrual period or conception date

Calculate GPA from course grades and credit hours

Calculate final course grade from weighted assignments and exams.

Count words, characters, sentences, and paragraphs instantly

Free online character counter

Generate strong, random passwords with custom length and character sets

Format, validate, and minify JSON instantly

Generate professional Lorem Ipsum placeholder text for web design, UI/UX mockups, and print layouts

Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, and more

Encode and decode URLs online

Encode plain text to Base64 or decode Base64 strings instantly

Encode or decode HTML entities instantly

Remove duplicate lines from text, email lists, keywords, or CSV data

Remove extra whitespace from text: trim leading/trailing spaces, collapse multiple spaces, delete blank lines, and strip all whitespace

Reverse text, flip words upside down, reverse line order, and check palindromes

Generate clean, SEO-optimized URL slugs from any text

Sort lines alphabetically, by length, numerically, or randomly

Compare two texts and highlight additions, deletions, and changes.

Convert Markdown syntax to clean HTML instantly.

Check Flesch, Gunning Fog, SMOG grade instantly.

Test and debug regular expressions with live match highlighting.