Stable Numbers
Percentage to Permille
Enter a percentage and get the permille value. Useful for science, engineering and data work.
Permille:
‰
Need the reverse? Try the permille to percentage calculator.
About this percentage to permille tool
Permille means per thousand. It is written with the symbol ‰ and it appears in science, engineering, health and quality control. Converting from percent to permille is simple. One percent is equal to ten permille, because a percent is per hundred and a permille is per thousand. This tool does the scaling for you, rounds to two decimals by default and presents a clean result that you can copy straight into a report.
Use it when a per thousand unit makes comparisons clearer. Salinity, isotope measurements, error rates and some medical values are often shown in permille. If you already have figures in percent, typing them here removes any risk of a slip with the decimal point. The calculator keeps the layout tidy and the method transparent so it is easy to check. If you need the opposite direction, there is a matching converter from permille back to percent. Stable Numbers focuses on tools that save time, cut small mistakes and give you confidence in the number you share.
Explore more in the percentage tools hub.