Contact

Write to contacto@kalcum.com if you spot a calculation error, miss a tool you need, or want to suggest a correction to any text.

KalCum.com is operated by SolucionesAhora.com, from Tarapoto, Peru.

What helps us fix it fast

• The exact page address.
• The values you entered.
• The result you got and the result you expected.
• The language you were browsing in.

Reports of calculation errors are reviewed before any other request.

Write in whichever language suits you: we answer in English, Spanish, Portuguese and French.