Per Mille (‰) & ppm Converter
Percent is out of 100, per mille out of 1,000, ppm out of a million. 0.4375% is 4.375‰ and 4,375 ppm. Percentages get unreadable once the decimals pile up.
Your numbers
Per mille (‰)
4.375‰
Percentage
0.4375%
ppm
4,375
Formula
Per mille (‰) = Part ÷ Whole × 1000
Blood alcohol, tax rates and water quality each have a conventional unit. Carry the unit across whenever you quote a figure.
What to enter
| Input | Default | Accepted range |
|---|---|---|
| PartThe slice taken out of the whole. | 35 | 0 and up |
| WholeThe reference total — you divide by this. | 8,000 | 1 and up |
Step by step
Quick reference table
Results when only Part changes and everything else stays put.
| Part | Per mille (‰) (‰) | Percentage (%) | ppm |
|---|---|---|---|
| 17.5 | 2.188 | 0.2188 | 2,187.5 |
| 26.3 | 3.288 | 0.3288 | 3,287.5 |
| 35 | 4.375 | 0.4375 | 4,375 |
| 52.5 | 6.563 | 0.6563 | 6,562.5 |
| 70 | 8.75 | 0.875 | 8,750 |
What each result means
| Result | At default values |
|---|---|
| Per mille (‰) (‰)Parts per thousand — ten times the percentage figure. | 4.375 |
| Percentage (%)A share expressed out of 100. | 0.4375 |
| ppmParts per million; 1 ppm is 0.0001%. | 4,375 |
Common mistakes
Blood alcohol, tax rates and water quality each have a conventional unit. Carry the unit across whenever you quote a figure.
Glossary
- Part
- The slice taken out of the whole.
- Whole
- The reference total — you divide by this.
- Per mille (‰)
- Parts per thousand — ten times the percentage figure.
- Percentage
- A share expressed out of 100.
- ppm
- Parts per million; 1 ppm is 0.0001%.
Frequently asked questions
Q. How is Per Mille (‰) & ppm Converter calculated?
Per mille (‰) = Part ÷ Whole × 1000 — Percent is out of 100, per mille out of 1,000, ppm out of a million. 0.4375% is 4.375‰ and 4,375 ppm. Percentages get unreadable once the decimals pile up.
Q. Can you walk through an example?
With Part 35, Whole 8,000, the answer is Per mille (‰) 4.375‰.
Q. What do I need to enter?
Enter Part, Whole. The result recalculates as you type, and an empty box counts as zero.
Q. How much does the answer move if I change a number?
Changing only Part moves the answer to Part 17.5 → Per mille (‰) (‰) 2.188 and Part 70 → Per mille (‰) (‰) 8.75. The table below lays out five steps.
Q. How are the numbers rounded?
Money is shown to the nearest whole unit, percentages to one decimal place and everything else to two. What you see is rounded; the calculation itself carries the unrounded value forward.
Q. Anything to watch out for?
Blood alcohol, tax rates and water quality each have a conventional unit. Carry the unit across whenever you quote a figure.
Related calculators
Tax rates and interest conventions differ by country and product — check your contract for real transactions.