Converters

Convert colors between HEX, RGB, HSL, and CMYK formats. Live preview with color picker.

Convert between units of length, weight, temperature, area, volume, speed, and more.

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

Convert between Unix timestamps and human-readable dates. Show ISO 8601, UTC, local time, and relative time.

Convert between YAML and JSON formats. Handles nested objects, arrays, strings, numbers, and booleans.

Convert XML to JSON format using DOMParser. Handles nested elements, attributes, and text nodes.

Upload or paste CSV data to view as an interactive table. Sort columns, search rows, edit cells, and export.

Convert between TOML and JSON formats. Parse TOML sections, key-value pairs, arrays, and nested tables.

Convert PDF pages to high-quality images. Export as PNG or JPEG with custom resolution.

Convert HTML content or web pages to PDF documents. Preserve formatting and styles.

Convert Markdown text to beautifully formatted PDF documents with code highlighting.

Convert HTML to Markdown. Handles headings, lists, links, images, tables, code blocks, and inline formatting.

Calculate the difference between two dates, add or subtract durations, and find business days. Essential for deadline planning and date math.

Convert text to Morse code and back. Encode letters, numbers, and punctuation. See dot-dash notation and copy the result.

Convert numbers to Roman numerals and back. Supports 1–3999. Includes a reference chart for common values.

Convert text to the NATO phonetic alphabet (Alpha, Bravo, Charlie...). Useful for spelling out codes, account numbers, and callsigns over the phone.

Calculate percentages, percentage change, and percentage of totals. Covers the most common percentage problems with clear formulas.

Convert temperatures between Celsius, Fahrenheit, Kelvin, and Rankine. See all conversions at once and understand the formulas.

Convert between bytes, kilobytes, megabytes, gigabytes, terabytes, and petabytes. Supports both SI (decimal) and IEC (binary) prefixes.

Convert speeds between mph, km/h, m/s, knots, Mach, and the speed of light. Instant all-unit conversion with reference speeds.

Convert text to binary (0s and 1s) and back. See ASCII/UTF-8 bit representations, hex codes, and decimal values for each character.

Convert Unix timestamps to human-readable dates and vice versa. Supports seconds and milliseconds. Shows UTC, local time, ISO 8601, and relative time.

Convert between CSS units: px, em, rem, pt, and %. Set your base font size and see all conversions instantly with a quick reference table.

Convert angles between degrees, radians, gradians, and turns. Includes a unit circle reference and common angle values.

Convert between binary, octal, decimal, and hexadecimal. Includes text-to-binary encoding and bit grouping for readability.

Calculate and convert aspect ratios. Enter width and height to simplify ratios, resize proportionally, and compare common standards.

Convert numbers to English words. Supports integers up to 999 quintillion. Perfect for writing checks, invoices, legal documents, and accessibility labels.

Convert between all pressure units: Pascal, bar, PSI, atm, torr, mmHg, inHg, and more. Real-time bidirectional conversion with weather and engineering reference values.

Convert cooking measurements: cups, tablespoons, teaspoons, ml, liters, ounces, grams. Includes US, metric, and imperial kitchen units for precise recipe scaling.

Calculate ideal body weight range using multiple formulas (Devine, Robinson, Miller, Hamwi). Enter height and biological sex to see recommended weight ranges.

Calculate electricity costs for any appliance or device. Enter wattage, usage hours, and electricity rate to see daily, monthly, and yearly energy costs.

Calculate your Total Daily Energy Expenditure (TDEE) and Basal Metabolic Rate (BMR). See daily calorie needs for weight loss, maintenance, and muscle gain.

Calculate optimal bedtimes and wake-up times based on 90-minute sleep cycles. Find the best time to wake up to feel refreshed, or when to go to sleep.

Calculate VAT (Value Added Tax) amounts — add VAT to a net price or extract VAT from a gross price. Supports any tax rate including UK, EU, and Australian GST.

Calculate Return on Investment (ROI), annualized ROI, and break-even time for any investment. Enter initial investment, final value, and time period.

Calculate sale prices, discount amounts, and percentage savings. Find the original price from a sale price, or compute what % discount you're getting.

Calculate markup percentage, gross profit margin, selling price from cost, or cost from selling price. Understand the difference between markup and margin.

Convert between mph, km/h, m/s, knots, Mach, and more. Instant speed unit conversion with common reference speeds.

Convert between liters, gallons, milliliters, fluid ounces, cups, pints, quarts, cubic meters, and more. Metric and US/imperial volume units.

Convert between kilograms, pounds, ounces, grams, stones, metric tons, and more. Instant bidirectional weight and mass unit conversion.

Convert between square meters, square feet, acres, hectares, square kilometers, square miles, and more. Ideal for land area and real estate calculations.

Convert between metric and imperial length units: meters, kilometers, miles, feet, inches, centimeters, millimeters, yards, and more.

Calculate simple interest, total amount, and repayment schedule. Enter principal, rate, and time period to see interest earned or owed.

Calculate your GPA from letter grades or percentages. Supports standard 4.0 scale, weighted GPA, and semester/cumulative GPA calculation.

Convert salary between hourly, weekly, monthly, and annual rates. Account for hours per week, vacation weeks, and see take-home pay estimates.

Project your retirement savings based on current balance, contributions, and expected returns. See if you're on track to retire and how long your savings will last.

Calculate the break-even point for a product or business. Enter fixed costs, variable cost per unit, and price per unit to find the units and revenue needed to break even.

Calculate how long to reach a savings goal, or how much to save per month. Shows month-by-month progress with interest, and time to reach the target.

Calculate how long to pay off debt and total interest paid. Compare avalanche (highest rate first) vs. snowball (smallest balance first) payoff strategies.

Calculate fuel economy (MPG, L/100km), trip fuel cost, and compare vehicle efficiency. Convert between MPG and L/100km, and estimate annual fuel costs.

Calculate the real purchasing power of money over time using historical US CPI data. See what a past dollar amount is worth today, or project future value.

Calculate daily calorie needs (TDEE) based on age, gender, height, weight, and activity level. Shows BMR and calorie targets for weight loss, maintenance, and gain.

Calculate running or walking pace, speed, and time. Convert between min/km, min/mile, km/h, and mph. Estimate finish times for 5K, 10K, half marathon, and marathon.

Calculate monthly payments, total interest, and amortization schedule for any loan. Enter principal, interest rate, and term to get a full payment breakdown.

Calculate Body Mass Index (BMI) from height and weight in metric or imperial units. Shows BMI category, healthy weight range, and context.

Calculate tip amount and split the bill among any number of people. Set tip percentage, see per-person totals, and round amounts to the nearest dollar.

Convert decimals to simplified fractions and mixed numbers. Shows the continued fraction expansion and multiple equivalent representations.

Calculate download time for any file size and internet speed. Convert between bandwidth units (Mbps, MB/s, KB/s) and see how long downloads take at different speeds.

Convert time durations between seconds, minutes, hours, days, and weeks. Parse human-readable durations like "2h 30m", format milliseconds, and generate ISO 8601 duration strings.

Calculate voltage, current, resistance, and power using Ohm's Law (V=IR, P=IV). Enter any two values to compute the remaining two with circuit diagrams.

Format numbers for different locales and styles: decimal, currency, percentage, scientific, and engineering notation. See international number formatting differences.

Calculate mean, median, mode, variance, standard deviation, range, and quartiles from a list of numbers. Instantly understand any dataset.

Calculate compound interest with configurable principal, rate, compounding frequency, and time. See year-by-year growth breakdown and total interest earned.

Calculate your exact age in years, months, days, hours, and minutes from your date of birth. Find the next birthday countdown and age on any specific date.

Calculate the exact difference between two dates in years, months, weeks, and days. Find business days, add or subtract days from a date, and more.

Convert numbers between binary, octal, decimal, and hexadecimal. Supports integers and shows step-by-step conversion with place values and bit patterns.

Convert between bytes, kilobytes, megabytes, gigabytes, terabytes, and petabytes. Supports both decimal (SI) and binary (IEC) units (KB vs KiB).

Convert colors between RGB, HEX, HSL, and HSB/HSV formats instantly. Color picker with live preview, WCAG contrast checker, and common web color reference.

Translate text to Morse code and Morse code back to text. Supports letters, numbers, and common punctuation with audio playback visualization.

Convert numbers between standard form and scientific notation (E notation). Supports very large and very small numbers with configurable significant figures.

Convert Markdown to HTML. Supports headings, bold, italic, links, images, code blocks, blockquotes, lists, tables, and horizontal rules. Shows live preview.

Calculate the Greatest Common Divisor (GCD) and Least Common Multiple (LCM) of two or more numbers. Shows step-by-step Euclidean algorithm.