Unit converter
Convert length, weight and temperature units with one simple tool.
About the unit converter
The BapTools unit converter covers the three most common unit groups: length, weight and temperature. Every calculation runs in your browser and returns a result instantly.
Supported units
- Length: millimetre, centimetre, metre, kilometre, inch, foot, yard, mile.
- Weight: milligram, gram, kilogram, tonne, ounce, pound.
- Temperature: Celsius, Fahrenheit, Kelvin.
Temperature conversion formula
To convert Celsius to Fahrenheit multiply by 9/5 and add 32. To convert Fahrenheit to Celsius subtract 32 and multiply by 5/9. The tool applies this for you.
Real-world examples
Example 1 — a 180 cm table in inches
1 foot = 30.48 cm, so 180 cm = 5.905 feet, about 70.9 inches. Useful when reading marketplace listings that quote inches.
Example 2 — a recipe in ounces
The recipe wants 450 g of flour and you only have an ounce scale. 450 g = 15.87 oz, so weigh about 15.9 and adjust to taste.
Example 3 — bath temperature
38 °C is 100.4 °F. A room at 22 °C is roughly 71.6 °F, which helps when the thermostat only speaks Fahrenheit.
Example 4 — running distances
1 mile = 1.609 km. A 5-mile run is about 8.05 km, and a 100-mile drive is roughly 161 km.
When to use it, and when not to
Worth using
- Reading technical documents or product labels in another unit system.
- Cooking from a foreign recipe without a properly scaled scale.
- Working with data entered by hand from an international source.
- Converting temperatures while travelling or working in Fahrenheit countries.
Not worth it
- Currency conversion: rates move daily and are not a fixed constant.
- Volume and area conversions, which this tool does not cover.
- Medication doses. Being wrong here is dangerous, so follow your doctor or the package leaflet.
How to convert units
- Pick a unit type: length, weight or temperature.
- Enter the value you want to convert.
- Select the source unit and the target unit.
- Press Convert to see the result.
Frequently asked questions
How many metres is one foot?
1 foot = 0.3048 metres, and 1 inch = 2.54 cm. These are the exact international definitions.
Why do I need unit conversion?
Reading technical documentation, following foreign recipes or working with international data all involve unit systems that are easy to mix up.
Are the results accurate?
Yes. Standard conversion factors are used, and results are rounded only for display.