What unit categories are supported?

Length, weight/mass, volume, area, speed, temperature, data storage, time, pressure, energy, and angle. Each category has 10–20 commonly used units.

How do I convert between metric and imperial?

Select the source unit (e.g., kilometers) and target unit (e.g., miles), enter the value, and the result appears instantly. The tool handles all conversion factors automatically.

Are the conversion formulas accurate?

Yes. All factors use the internationally agreed definitions (SI standards). For example, 1 inch is exactly 25.4 mm, 1 pound is exactly 0.45359237 kg.

Can I convert cooking measurements?

Yes — volume conversions include cups, tablespoons, teaspoons, millilitres, and fluid ounces. For dedicated kitchen use, see the Cooking Converter tool.

Does it support scientific units like pascals or joules?

Yes. The pressure category includes Pa, kPa, bar, atm, psi, and mmHg. Energy includes joules, calories, kilowatt-hours, BTU, and electron-volts.

Is the unit converter available offline?

Once loaded, all conversion logic runs in your browser with no server calls. It works fully offline for quick lookups anywhere.

Can I see the conversion formula used?

The result panel shows the multiplication factor or formula applied. For temperature conversions, the full equation (e.g., °F = °C × 9/5 + 32) is displayed.

Unit Converter

Convert Live

Convert between metric and imperial units across categories.

About this tool

Unit Converter — Convert between metric and imperial units across categories. Free, fast and private. Runs entirely in your browser at Quick Calci Tools.

Examples

Common scenarios for the Unit Converter.

Inches → centimeters

value: 12
from: in
to: cm

12 in = 30.48 cm.

Miles → kilometers

value: 100
from: mi
to: km

100 mi ≈ 160.93 km.

Who uses the Unit Converter?

Common scenarios and audiences for this tool.

Engineers & architects

Convert between metric and imperial dimensions when working with international building standards or client specifications.

Travellers abroad

Quickly convert between miles/km, pounds/kg, and Fahrenheit/Celsius when navigating a new country's measurement system.

Science students

Convert lab measurements between CGS and SI units for physics, chemistry, and biology coursework.

Home cooks following international recipes

Translate ingredient amounts between grams/ounces, ml/cups, and Celsius/Fahrenheit when cooking from foreign cookbooks.

Fitness enthusiasts

Convert between lbs and kg for weightlifting, and between miles and km for running distances tracked in different apps.

Frequently asked questions

Everything you need to know about the Unit Converter.