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High-speed, browser-based tools for Calculator. None of your data ever leaves your computer.
Convert between square meters, square feet, acres, hectares, square kilometers, square miles, and square yards.
Convert between Bytes, Kilobytes (KB), Megabytes (MB), Gigabytes (GB), Terabytes (TB), and binary units (KiB, MiB, GiB).
Calculate exact age, duration between two dates, business working days, and date offsets client-side.
Convert between meters, feet, inches, kilometers, miles, yards, centimeters, and nautical miles with instant calculation.
Calculate monthly loan payments, total interest costs, and full amortization schedules with extra payment simulation.
Calculate percentages, percentage change, discounts, and bill splits with instant formulas.
Calculate sales tax, reverse gross-to-net tax breakdowns, and combined shopping discounts with instant itemized financial summaries.
Convert between kilometers per hour (km/h), miles per hour (mph), meters per second (m/s), knots, and feet per second.
Convert between Celsius (°C), Fahrenheit (°F), Kelvin (K), and Rankine (°R) with step-by-step conversion formulas.
Convert between units of length, weight, temperature, area, volume, speed, and digital data storage with instant calculation.
Convert between liters, milliliters, cubic meters, gallons, quarts, pints, cups, and fluid ounces with instant calculation.
Convert between kilograms, pounds (lbs), grams, ounces, stones, metric tonnes, and US tons with instant precision.
Count words, characters, sentences, paragraphs, reading time, and speaking time in real time. Includes keyword density analysis and case conversion.