📊 Metric Converter
Stay within the metric system while switching units.
Helpful when scientific notes, technical sheets, or recipes specify metric values in a different unit than you prefer.
How to Use This Calculator
Choose the metric category
Select length, mass, volume, or temperature.
Enter the value
Type the amount and choose the current metric unit.
Review metric equivalents
See the remaining metric units for quick comparisons or conversions.
Formula
All conversions rely on SI scaling factors.
Lengths: mm → cm → m → km via powers of ten.
Mass: mg → g → kg via powers of ten.
Volume: mL → L → m³ and temperature: °C ↔ K (offset of 273.15).
Use the formula breakdown to confirm the calculation logic or perform the conversion manually if needed.
Full Description
Even within the metric system, engineers and scientists often need to switch between units to match instrumentation, standards, or reporting preferences. This converter keeps all calculations within SI units, ensuring accuracy and consistency.
Because metric units scale by powers of ten, conversions are exact and lossless—no repeating decimals or approximations required.
Frequently Asked Questions
Why only metric units?
This tool aims to simplify conversions within the metric system. Use the metric-to-imperial converters for cross-system conversions.
Are Kelvin and Celsius both included?
Yes. Kelvin is absolute temperature, while Celsius is relative; the converter handles both directions.
Can I add more units?
Extend the unit arrays to include additional metric units such as micrometers or tonnes.
Does it support very large numbers?
Yes. JavaScript handles large metric values; switch to scientific notation if the numbers become unwieldy.