iformat.io
Convert between 1000+ units instantly. Metric to imperial, temperature, length, weight, and more. Professional accuracy, always free.
Quick access to the most commonly used measurement conversions
Convert meters, feet, inches, miles, kilometers
Convert kilograms, pounds, ounces, grams
Convert Celsius, Fahrenheit, Kelvin
Convert square meters, acres, hectares
Convert liters, gallons, cubic meters
Convert km/h, mph, m/s, knots
Simple 3-step process for accurate unit conversions
Choose from 25+ measurement categories like length, weight, temperature
Select source and target units from 1000+ available measurements
Enter your value and instantly see accurate conversion results
Common conversion factors for quick calculations
°F = (°C × 9/5) + 32
°C = (°F - 32) × 5/9
K = °C + 273.15
Our converter uses NIST-standard conversion factors with up to 15 decimal places of precision, making it suitable for professional engineering and scientific calculations.
Yes, completely free with no registration, no hidden fees, and unlimited conversions. All 1000+ units across 25+ categories are available at no cost.
Absolutely! Our converter is fully responsive and works perfectly on smartphones, tablets, and desktop computers with a touch-friendly interface.
We support 25+ categories including length, weight, temperature, volume, area, speed, pressure, energy, power, data storage, time, angle, and many specialized scientific units.
Temperature scales have different zero points and degree sizes, requiring both multiplication and addition/subtraction. For example, Celsius 0° = Fahrenheit 32°, not 0°.