An American recipe calls for 2 cups and 6 ounces, an equipment manual says 45 psi and a runway is measured in feet. Your hands are busy and the last thing you want is to open a calculator and remember whether it was 0.4536 or 0.3937.
How to use Unit Converter step by step
1. Pick a category
Length, mass, volume, area, speed, time, digital data or temperature.
2. Enter the value and units
Select the source unit and the target unit. The arrows button swaps them.
3. Read the result and copy
Below you get the value in every unit of the category; copy the one you need in one click.
The Step Count: Traditional Friction vs. KorexTools
Converting units by hand
- Look up the conversion factor in a search engine.
- Multiply or divide on a calculator, remembering which way.
- Repeat for every other unit you need.
With the KorexTools Unit Converter
- Choose category and units.
- Enter the value.
- Read the result and the full table.
Converting between metric and imperial without redoing the maths every time
US recipes use cups and ounces, aircraft measure in feet and knots, your scale may read pounds and the map kilometres. Converting in your head works until you have to multiply by 3.7854 or 0.4536.
This converter uses exact factors, keeps one internal base unit per category and shows the result in every unit at once, so you see at a glance how many litres, cups and fluid ounces a gallon is. Temperature is computed with its own formulas, not a factor, because Celsius, Fahrenheit and Kelvin have different zero points.
Included categories
- •Length: mm, cm, m, km, inch, foot, yard, mile and nautical mile.
- •Mass, volume and area: mg up to tonne, pound, ounce, spoons, cups, gallon, hectare and acre.
- •Speed and time: m/s, km/h, mph, knots, seconds up to weeks.
- •Data and temperature: bit up to larger units, °C, °F and K.
Common conversions
| Value | Equals | Category |
|---|---|---|
| 1 inch | 2.54 cm | Length |
| 1 pound | 0.4536 kg | Mass |
| 1 US gallon | 3.785 L | Volume |
| 100 km/h | 62.14 mph | Speed |
Common Mistakes and How to Avoid Them
- ⚠️Mixing pounds and ounces in one figure ("5.8" as 5 lb 8 oz) instead of decimals.
- ⚠️Confusing MB (megabytes) with Mb (megabits) when comparing internet speeds with file sizes.
Frequently Asked Questions
How do I convert pounds to kilograms?
Pick Mass, enter the pounds and leave the target as kg: multiply by 0.4536. 150 lb is 68.04 kg.
Why can the gallon vary?
Here we use the US gallon (3.785 L). The British imperial gallon is 4.546 L; keep that in mind when working with UK measures.
How do I go from Celsius to Fahrenheit?
°F = °C × 9/5 + 32. That is why 0 °C is 32 °F and 100 °C is 212 °F.
Does it round results?
It shows up to 8 significant digits so you see the useful value without a tail of decimals; the internal calculation keeps full precision.
What I would do if I were in your shoes
«Before converting, we sanity-check the magnitude: if 1 pound came out as 2.2 kg, we multiplied where we should have divided. A glance at the order of magnitude prevents almost every error.» — DataKorex Engineering Team