1 ppm to Per Mille

Convert 1 ppm (ppm) to per mille () with formulas, examples, and conversion tables.

ppm
1 ppm = 0.001
Full precision:0.001
Step-by-Step Solution

To convert 1 ppm to per mille, we divide by 1000 because one per mille equals exactly 1000 ppm.

1 per mille = 1000 ppm

Since there are 1000 ppm in every per mille, we divide our value by this factor:

1 ÷ 1000 = 0.001 per mille

So 1 ppm = 0.001 per mille.

Quick check: 0.001 × 1000 = 1 ppm

ppm to Per Mille Conversion Table

ppmPer Mille
1 ppm0.001
2 ppm0.002
3 ppm0.003
4 ppm0.004
5 ppm0.005
10 ppm0.01
20 ppm0.02
50 ppm0.05
100 ppm0.1

1 ppm in Other Units

Unit1 ppm =
PPM to PPB1000 ppb
ppm to ppt1000000 ppt
PPM to Percent0.0001 %
ppm to Per Mille0.001
PPM to mg/L1 mg/L
ppm to g/L0.001 g/L
ppm to μg/L1000 μg/L
ppm to mg/m³1000 mg/m³

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