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Part-per Trillion [ppt] to Part-per Million [ppm] Converter

Quick Reference

1 Part-per Trillion (ppt) = 1.0000e-6 Part-per Million (ppm)

1 Part-per Million (ppm) = 1000000 Part-per Trillion (ppt)

How to Convert Part-per Trillion to Part-per Million

1 ppt = 1.0000e-6 ppm
1 ppm = 1000000 ppt

To convert Part-per Trillion to Part-per Million, divide the value by 1000000 (equivalently, multiply by 1.0000e-6). To convert Part-per Million back to Part-per Trillion, multiply by 1000000.

Example: convert 10 ppt to ppm:
10 ppt = 10 x 1.0000e-6 = 1.0000e-5 ppm

↔ Convert Part-per Million to Part-per Trillion

Part-per Trillion

Definition: Part-per trillion (ppt) is a unit used to express extremely low concentrations, representing one part of a substance per trillion parts of the mixture. It is often used in environmental science, toxicology, and chemistry to quantify trace amounts of pollutants or contaminants.

History/origin: The concept of 'parts per' notation originated from the need to express very small concentrations or proportions. 'Part per trillion' is a logical extension of 'parts per million' (ppm) and 'parts per billion' (ppb), becoming relevant with advancements in analytical techniques that allowed for the detection of increasingly smaller quantities.

Current use: PPT is commonly used to measure trace contaminants in water, air, and soil. It is also used in pharmaceutical analysis to quantify impurities, and in forensic science to detect trace amounts of substances in samples. Regulatory agencies often use ppt to set permissible levels for pollutants.

Part-per Million

Definition: Parts per million (ppm) is a way of expressing very dilute concentrations of substances. It represents the number of parts of a substance per million parts of the mixture.

History/origin: The concept of parts per million arose out of the need to express very small concentrations of substances in a convenient way. It is widely used in chemistry, environmental science, and engineering.

Current use: PPM is commonly used to measure the concentration of pollutants in air and water, the concentration of trace elements in materials, and the concentration of additives in food and beverages.

Part-per Trillion to Part-per Million Conversion Table

Part-per Trillion [ppt]Part-per Million [ppm]
1 ppt1.0000e-6 ppm
2 ppt2.0000e-6 ppm
5 ppt5.0000e-6 ppm
10 ppt1.0000e-5 ppm
20 ppt2.0000e-5 ppm
50 ppt5.0000e-5 ppm
100 ppt1.0000e-4 ppm
200 ppt0.0002 ppm
500 ppt0.0005 ppm
1000 ppt0.001 ppm

Common Part-per Trillion to Part-per Million conversions

  • 1 ppt = 0.000001 ppm
  • 2 ppt = 0.000002 ppm
  • 3 ppt = 0.000003 ppm
  • 4 ppt = 0.000004 ppm
  • 5 ppt = 0.000005 ppm
  • 6 ppt = 0.000006 ppm
  • 7 ppt = 0.000007 ppm
  • 8 ppt = 0.000008 ppm
  • 9 ppt = 0.000009 ppm
  • 10 ppt = 0.00001 ppm
  • 12 ppt = 0.000012 ppm
  • 15 ppt = 0.000015 ppm
  • 20 ppt = 0.00002 ppm
  • 25 ppt = 0.000025 ppm
  • 30 ppt = 0.00003 ppm
  • 40 ppt = 0.00004 ppm
  • 50 ppt = 0.00005 ppm
  • 60 ppt = 0.00006 ppm
  • 75 ppt = 0.000075 ppm
  • 100 ppt = 0.0001 ppm
  • 150 ppt = 0.00015 ppm
  • 200 ppt = 0.0002 ppm
  • 250 ppt = 0.00025 ppm
  • 300 ppt = 0.0003 ppm
  • 500 ppt = 0.0005 ppm
  • 750 ppt = 0.00075 ppm
  • 1,000 ppt = 0.001 ppm

Part-per Trillion [ppt] to Part-per Million [ppm] Converter

What is 1 ppt in ppm?
1 Part-per Trillion (ppt) equals 0.000001 ppm, and 1 ppm equals 1,000,000 ppt.
How do I convert Part-per Trillion to Part-per Million?
Divide by 1,000,000: 10 ppt ÷ 1,000,000 = 0.00001 ppm. The converter above does it for any value, with the precision you choose.
What is 100 ppt in ppm?
100 ppt = 0.0001 ppm. Common amounts are listed on this page, each with its own step-by-step page.
Is a Part-per Trillion bigger than a Part-per Million?
No. 1 ppt is only 0.000001 ppm: it takes 1,000,000 ppt to make 1 ppm.
Part-per Trillion to Part-per Million Converter | UtilLab