Free Unit Converters, Developer Tools & Calculators

Convert Celsius to Fahrenheit, Kelvin, and Rankine instantly. Includes conversion formulas, reference charts for key temperatures, and step-by-step worked examples.

Convert inches to cm, feet to meters, miles to km, yards to feet, and 20+ length units. Precision results with lookup tables for common measurements.

Convert pounds to kg, ounces to grams, stones to pounds, and tons to kg. Instant results with conversion charts for cooking, shipping, and fitness.

Convert gallons to liters, cups to mL, fluid ounces to milliliters, tablespoons to teaspoons, and 25+ volume units for cooking, science, and everyday use.

Convert square feet to acres, square meters to hectares, sq km to square miles, and marla to sq ft. Quick lookup tables for land, real estate, and construction.

Convert mph to km/h, knots to mph, m/s to km/h, and Mach to mph. Built for drivers, pilots, runners, and anyone comparing speed across metric and imperial units.

Convert kilowatts to horsepower, watts to amps, BTU to kW, joules to calories, and eV to joules. Covers electrical, mechanical, and thermal energy units.

Convert PSI to bar, atm to PSI, kPa to mmHg, and bar to kPa. Essential for tire pressure, HVAC, weather, and hydraulic engineering calculations.

Convert MB to GB, TB to GB, bytes to KB, bits to bytes, and MiB to MB. Supports both binary (1024-based) and decimal (1000-based) storage standards.

Convert Mbps to MB/s, Gbps to Mbps, Kbps to Mbps, and calculate file download times. Compare internet speeds and understand bandwidth vs. throughput.

Convert MPG to L/100km, km/L to MPG, and US MPG to UK MPG. Compare fuel efficiency across American, British, and metric standards side by side.

Convert degrees to radians, DMS to decimal degrees, and gradians to degrees. Used in trigonometry, surveying, navigation, and CAD design.

Convert Nm to ft-lbs, newtons to pounds-force, inch-pounds to Nm, and kgf to newtons. Built for automotive mechanics, engineers, and torque wrench users.

Convert amps to volts, kW to amps, watts to kWh, and use the Ohm's Law calculator. Solve voltage, current, resistance, and power problems step by step.

Convert cups to grams, tablespoons to mL, butter sticks to grams, and teaspoons to tablespoons. Ingredient-specific conversions for baking with precision.

Convert USD to EUR, GBP to USD, INR to USD, and 30+ world currencies. Live exchange rates with fee calculators and historical rate comparisons.

Age calculator, Unix epoch converter, days-between-dates calculator, countdown timer, Julian date converter, and work hours tracker. 20+ date and time utilities.

Convert binary to decimal, hex to decimal, text to binary, Roman numerals to Arabic, and octal to hex. Step-by-step conversion logic for programmers and students.

Convert hex to RGB, generate CSS gradients, check WCAG color contrast, simulate color blindness, and build palettes. 25+ tools for designers and front-end developers.

JSON formatter, regex tester, Base64 encoder/decoder, UUID generator, SHA-256 hash generator, JWT decoder, cron builder, and 30+ utilities every developer bookmarks.

Case converter (uppercase, lowercase, title, camelCase), word counter, character counter, Morse code translator, slug generator, and text cleanup utilities.

BMI calculator, BMR calculator, daily calorie calculator, body fat estimator, pregnancy due date, ideal weight, BAC calculator, and dog years converter.

Grams to moles, molarity calculator, dilution calculator (C1V1=C2V2), density calculator, light years to km, and significant figures calculator for chemistry and physics.

Shoe size converter (US, EU, UK, Asian), ring size chart, men's and women's clothing sizes, bra size converter, and hat/glove/belt size guides across regions.

Convert EST to PST, UTC to GMT, IST to EST, and any world time zone. Meeting planner, world clock, and daylight saving time reference for remote teams.