ImportPilot

CSV Date Normalizer

Normalize CSV dates to YYYY-MM-DD with European or US interpretation for ambiguous slash dates.

Privacy-first: files never leave this device.

Dates like 04/08/2026 are ambiguous, so ImportPilot asks how to interpret them before changing values.

Keeps dates unchanged by default.
Supports European DD/MM/YYYY and US MM/DD/YYYY interpretation.
Leaves invalid dates untouched.

Open ImportPilot CSV cleaner overview

Before

04/08/2026
4-8-2026
2026-8-4

After

2026-08-04 in European mode
2026-08-04 in European mode
2026-08-04

CSV Cleaner Clean messy CSV files locally in your browser before importing them into spreadsheets, CRMs, ecommerce tools, or databases. CSV Delimiter Fixer Detect and fix comma, semicolon, tab, and pipe delimiters in CSV, TSV, and TXT files. CSV Encoding Fixer Preview and fix CSV encoding issues including UTF-8, UTF-8 BOM, Windows-1252, and Windows-1253 where supported. European Decimal CSV Converter Convert European decimal values like 1.234,56 or € 2.450,00 to import-friendly 1234.56 format. Duplicate CSV Header Fixer Fix duplicate and missing CSV headers before importing data into tools that require unique column names.