PPT to PPM Converter

Convert parts per trillion (ppt) to parts per million (ppm) — and back. Instant online conversion.

PPT → PPM
ppt
↓
— ppm
Formula: ppm = ppt ÷ 1,000,000
1 ppm = 1,000,000 ppt  |  1 ppt = 0.000001 ppm
OR
PPM → PPT
ppm
↓
— ppt
Formula: ppt = ppm × 1,000,000
1 ppm = 1,000,000 ppt  |  1 ppt = 0.000001 ppm

PPT to PPM Conversion Table

PPT (Parts per Trillion) PPM (Parts per Million) PPB (Parts per Billion)
1 ppt0.000001 ppm0.001 ppb
10 ppt0.00001 ppm0.01 ppb
100 ppt0.0001 ppm0.1 ppb
500 ppt0.0005 ppm0.5 ppb
1,000 ppt0.001 ppm1 ppb
5,000 ppt0.005 ppm5 ppb
10,000 ppt0.01 ppm10 ppb
50,000 ppt0.05 ppm50 ppb
100,000 ppt0.1 ppm100 ppb
500,000 ppt0.5 ppm500 ppb
1,000,000 ppt1 ppm1,000 ppb
5,000,000 ppt5 ppm5,000 ppb
10,000,000 ppt10 ppm10,000 ppb

Concentration Scale Reference

ppm
Parts per Million
10-6
1 mg/L in water
ppb
Parts per Billion
10-9
1 µg/L in water
ppt
Parts per Trillion
10-12
1 ng/L in water
ppq
Parts per Quadrillion
10-15
1 pg/L in water
ⓘ 1 PPM = 1,000,000 PPT. Parts per trillion (ppt) is used for trace-level measurements — such as environmental contaminants, heavy metals in drinking water, or ultra-sensitive analytical chemistry. PPT values are 1 million times smaller than PPM values.
PPT to PPM Online Converter