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Concentration

ppbtoppt

Convert parts per billion (10⁻⁹) (ppb) to parts per trillion (10⁻¹²) (ppt).

Factor1 ppb = 1000 ppt

Converter

ppb

Accepts numbers or expressions, e.g. 150 + 14.7

Result
1000ppt

Rendered to 6 significant figures.

Formula

Formula
ppt = ppb × 1000

Multiply any value in parts per billion (10⁻⁹) by 1000 to obtain the value in parts per trillion (10⁻¹²).

Worked example

Convert 1 ppb to ppt.

  1. 01Start with 1 ppb.
  2. 02Multiply by the conversion factor: 1 × 1000 = 1000 ppt.
Result1 ppb = 1000 ppt

Conversion table

ppbppt
11000
22000
55000
1010000
2020000
5050000
1001.0000e+5
2002.0000e+5
5005.0000e+5
10001.0000e+6

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from ppb to ppt?
1 ppb equals 1000 ppt. To convert, multiply the value in parts per billion (10⁻⁹) by 1000.
How do I convert 1 ppb to ppt?
1 ppb = 1000 ppt. For any value, multiply by 1000.
How do I convert ppt back to ppb?
Divide by the same factor — or equivalently, multiply by 0.001. So 1 ppt = 0.001 ppb.
When would I need to convert parts per billion (10⁻⁹) to parts per trillion (10⁻¹²)?
Concentration-ratio conversions between ppb and ppt are used in trace-analysis, gas-composition work, environmental reporting and process-chemistry datasheets. These conversions are dimensionless: they do NOT cover mg/L, g/L, mol/L, normality, equivalents, mass-percent, volume-percent, ppmw or ppmv — those require solution density and/or molecular weight. Note: ppt here means parts per trillion (10⁻¹²), not parts per thousand.
Is the conversion exact?
Yes. Both ppb and ppt are defined by exact SI relationships, so the displayed factor is exact (any rounding shown is only for display).

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