The mathematical foundations of measurement. We provide transparent, precise formulas so you can understand every calculation our tools perform.
Meters to Feet
ft = m × 3.28084Feet to Meters
m = ft × 0.3048Inches to Centimeters
cm = in × 2.54Kilometers to Miles
mi = km × 0.621371Kilograms to Pounds
lb = kg × 2.20462Pounds to Kilograms
kg = lb × 0.453592Grams to Ounces
oz = g × 0.035274Metric Tons to US Tons
ton = t × 1.10231Celsius to Fahrenheit
°F = (°C × 9/5) + 32Fahrenheit to Celsius
°C = (°F - 32) × 5/9Celsius to Kelvin
K = °C + 273.15Fahrenheit to Kelvin
K = (°F - 32) × 5/9 + 273.15Bytes to Kilobytes
KB = B / 1,024Megabytes to Gigabytes
GB = MB / 1,024Terabytes to Gigabytes
GB = TB × 1,024Joules to Calories
cal = J / 4.184Watts to Horsepower
hp = W / 745.7Kilowatt-hours to Joules
J = kWh × 3,600,000PSI to Bar
bar = psi × 0.0689476Atmospheres to Pascals
Pa = atm × 101,325Bar to Pascals
Pa = bar × 100,000At EazyUnit, we utilize high-precision floating point arithmetic to handle these calculations. While these formulas appear simple, maintaining accuracy across extreme scales (like from nanometers to light years) requires careful engineering.
Our values are based on the latest 2019 SI redefinitions and NIST Special Publication 811. Whether you're doing back-of-the-envelope calculations or precise scientific work, these formulas are the industry standard.