🧮 Measurement Converter

Choose a measurement category and convert between supported units.

Whether you’re cooking, traveling, or tinkering in the lab, this converter helps you switch between common unit systems quickly.

Nanometers (nm)10,000,000,000
Angstroms (Ã…)100,000,000,000
Micrometers (µm)10,000,000
Millimeters (mm)10,000
Centimeters (cm)1,000
Decimeters (dm)100
Kilometers (km)0.01
Inches (in)393.701
Feet (ft)32.8084
Yards (yd)10.9361
Miles (mi)0.006214
Nautical Miles (NM)0.0054
Mils (thou)393,700.787
Astronomical Units (AU)0
Light Years (ly)0

How to Use This Calculator

1

Pick a category

Choose length, mass, volume, or temperature depending on what you want to convert.

2

Enter the measurement

Type the value and select the unit you currently have.

3

Read the conversions

Scroll through the list of equivalent units for the selected category.

Formula

Conversions use SI definitions as the common baseline.

Example (length): meters = convert(value, from unit → meters), target = convert(meters → target unit)

Example (temperature): °C = convert to Celsius, target = convert from Celsius to chosen unit

Use the formula breakdown to confirm the calculation logic or perform the conversion manually if needed.

Full Description

Instead of juggling separate converters for length, mass, volume, and temperature, this tool consolidates the most common conversions into one panel. Pick a category, provide a value, and review all relevant equivalents at once.

The converter relies on established SI relationships (e.g., 1 inch = 25.4 mm, 1 lb = 0.45359237 kg) and handles tricky temperature formulas so you can cross-check values quickly.

Frequently Asked Questions

Why only one category at a time?

Different measurement types require different formulas, so the converter focuses on one category per calculation.

Are results rounded?

Yes, values display with sensible precision. Copying them preserves the shown decimals.

Can I add more units?

Extend the unit lists in the code if you need additional measures.

Does it support scientific notation?

Enter values using decimal notation. For very large or small numbers, convert them to decimals first.