Hardness as mg/L CaCO₃ turned into ppm, German degrees, and French degrees.
| ppm as CaCO₃ | – |
| °dH | – |
| °fH | – |
Use this calculator when a kit or lab result is in mg/L as CaCO₃ and you need the other hardness scales on a report.
The calculation treats ppm as CaCO₃ as numerically the same as mg/L in dilute water. °dH = mg/L / 17.848, °fH = mg/L / 10. Soft/hard classification is not applied here.
This is a unit conversion of hardness, not a titration worksheet.
Hardness as CaCO₃ (mg/L): Hardness in mg/L as CaCO₃ from the titration or strip.
ppm as CaCO₃: Numerically equal to mg/L as CaCO₃.
°dH: German degrees of hardness.
°fH: French degrees of hardness.
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