October 25, 2026 · Converters
Simple formulas for everyday conversions.
Unit conversion is one of those skills you need more often than you expect. Maybe you are following a recipe from another country, checking the weather in Celsius, or measuring a room in feet and inches. Knowing how to convert between units makes life easier.
In this guide, I will explain the most common conversions for length, weight, and temperature, and show you how to use our free converter.
The most common length conversions are between the metric system (meters, centimeters) and the imperial system (feet, inches, miles). Here are the key formulas:
For example, if you are 1.75 meters tall, you are 1.75 × 3.28084 = 5.74 feet, or about 5 feet 9 inches.
Weight conversions are common in cooking and fitness:
For example, if a recipe calls for 500 grams of flour, that is 500 × 0.035274 = 17.6 ounces, or about 1.1 pounds.
Temperature conversions use formulas, not simple multipliers:
For example, 25°C is (25 × 9/5) + 32 = 77°F. Room temperature, comfortable for most people.
Our free Unit Converter handles length, weight, and temperature conversions instantly. Just enter the value, select the units, and click Convert. It runs entirely in your browser, so your data stays private.
We also have specific converters for length, weight, and temperature.
The metric system is used in most of the world. The imperial system is still used in the US, UK, and a few other countries. This is why conversion is often necessary.
For rough estimates: 1 meter ≈ 1 yard, 1 kilogram ≈ 2 pounds, 1 mile ≈ 1.6 kilometers. For precise conversions, use a calculator.
Mass is the amount of matter (kilograms), while weight is the force of gravity (pounds). In everyday use, we often use them interchangeably, but scientifically they are different.
Unit conversion is a valuable skill. Once you know the basic formulas, you can convert almost anything. For quick, accurate conversions, use our free Unit Converter — no sign-up, no upload.