📏 Converters

Measurements Converter

Convert between units of length, mass, temperature, area, volume and speed. Instant result in the browser.

Convert units of measure without slips

A recipe in ounces, a distance in miles, a temperature in Fahrenheit. Sooner or later you have to move from one unit to another, and getting the math wrong just isn't an option. This converter brings the everyday quantities into one place and shows the result while you type.

It handles length, mass, temperature, area, volume and speed, so it works in the kitchen and on a trip as much as in technical work and study. Pick the category and the source unit, enter the value, and the list shows the equivalent in every other unit of that category at once, with no factors for you to recall.

The whole calculation happens in the browser and needs no internet once the page has loaded. Keep it as a reference for the next time you run into a unit that's outside your usual habits.

Frequently asked questions

Are the gallon and the fluid ounce in the list US or imperial?

US. The gal (US) is 3.785411784 litres, while the British imperial gallon is about 4.546 litres, nearly 20 percent more. The US fluid ounce is 29.57 mL against 28.41 mL for the imperial one, and the pint splits the same way. If the recipe or the spec comes from the UK, adjust the imperial figure before typing it in, or the result will be off.

In the length category, does nm mean nanometre?

No. Here nm is the nautical mile, 1852 metres, the unit used in navigation and aviation. The length scale runs from millimetre up to kilometre, with no nanometre, micrometre or light year in it. Similar care pays off elsewhere: the knot is one nautical mile per hour, and ha is the hectare, that is, 10,000 square metres.

Why does temperature not use a multiplication factor like the other units?

Because the scales start from different zeros. The conversion applies shifted formulas, F = C × 9/5 + 32 and K = C + 273.15, so 0 °C is not 0 on either one. A practical consequence: nothing stops you from entering a value below absolute zero, -273.15 °C, and getting a negative kelvin, which does not exist physically. Results carry up to 8 significant digits.

Related Tools

📏

Unit Converter

Convert units of length, mass, temperature, area, volume and speed. Supports metric and imperial systems with instant conversion.

📝

In-Text Unit Converter (Imperial ↔ Metric)

Rewrites every measurement inside a block of text between imperial and metric units, handling fractions, inches, pounds, cups and Fahrenheit.

🔢

Number Base Converter

Convert numbers between binary (base 2), octal (base 8), decimal (base 10) and hexadecimal (base 16). Instant bidirectional conversion.

🖼️

Base64 to Image

Convert Base64 strings back to an image to visualize and download.

🔧

AsciiDoc → HTML (basic)

Render simple AsciiDoc to HTML: headings = == ===, paragraphs, lists, emphasis. Does not cover advanced extensions like includes.

🔢

Text ↔ Decimal Converter

Convert ASCII text to decimal codes and vice versa. Each character is represented by its decimal value in the ASCII table.