Convert between all unit types: length, weight, temperature, volume. Part of the DevTools Surf developer suite. Browse more tools in the Calculators collection.
Use Cases
Convert engineering specifications between metric and imperial for cross-regional manufacturing.
Calculate temperature conversions for chemistry or cooking applications.
Convert between volume units for recipe scaling across different measurement traditions.
Convert between data units (bytes, kilobytes, mebibytes) where SI and binary prefixes differ.
Tips
When converting between temperature scales, remember that Kelvin is an absolute scale with no negative values — K = °C + 273.15, which means absolute zero is 0 K, not -273.15 K.
Fluid ounces are not the same as ounces by weight — US fl oz ≈ 29.57 mL vs. 1 oz (weight) ≈ 28.35g. They differ by about 4% but are often confused in recipes.
Always specify whether US or Imperial units are intended for volume (gallons, pints, fluid ounces differ between systems) and confirm before doing conversions for engineering applications.
Fun Facts
The metric system was introduced in France in 1799 following the French Revolution. The US is one of only three countries (along with Liberia and Myanmar) that has not officially adopted the metric system as the primary measurement system.
The Mars Climate Orbiter was lost in 1999 because one engineering team used metric units and another used imperial units without converting — a $327 million mistake from a units mismatch.
The kilogram was redefined in 2019 in terms of the Planck constant, ending 130 years of reliance on a physical platinum-iridium prototype artifact. The new definition makes the kilogram theoretically reproducible from first principles.
FAQ
What is the difference between megabyte (MB) and mebibyte (MiB)?
1 MB = 1,000,000 bytes (SI decimal prefix). 1 MiB = 1,048,576 bytes (binary prefix). Storage manufacturers use MB (1,000-based); operating systems historically used MB to mean MiB (1,024-based). IEC standardized MiB in 1998 to resolve the ambiguity.
