Weight & Temperature Converter
Convert weight between grams, kilograms, pounds, ounces, stone and tola, and temperature between Celsius, Fahrenheit and Kelvin.
How it's calculated
Weight is converted through the gram, with exact factors:
- 1 ounce = 28.349523125 g, 1 pound = 453.59237 g, 1 stone = 14 lb = 6,350.29318 g.
- 1 tola = 180 grains = 11.6638038 g.
Temperature scales have different zero points, so they use formulas rather than a factor:
- °F = °C × 9/5 + 32
- K = °C + 273.15
Results are rounded to 12 significant figures. Temperatures below absolute zero (0 K) are rejected.
Frequently asked questions
How many grams is a tola?
One tola is 11.6638038 grams (180 grains). It is still used for gold in the Gulf and South Asia; gold bars are often sold as 10 tola, about 116.64 g.
How do I convert Celsius to Fahrenheit in my head?
Double the Celsius figure and add 30 for a rough answer. The exact formula is °F = °C × 9/5 + 32, so 40 °C is 104 °F.
Why can't I enter a temperature below a certain value?
Nothing can be colder than absolute zero: 0 K, -273.15 °C or -459.67 °F.