What you will build

You will check a spreadsheet’s Locale and Time zone settings, change them deliberately, and confirm that new date/number entries are interpreted using the selected regional settings without altering the source sample.

Learning objectives

Open the practice workbook

HANDS-ON PRACTICE

Practice in your own copy

Make your own Google Sheets copy with the same data, formulas, formatting, filter and frozen header. The original remains unchanged.

Make a Google Sheets copy (access required) ↗View original

Sign in to Google. If the original is not publicly shared, download the full workbook and import it into Google Sheets, or paste the example data into your own sheet.

The practice sheet shows the complete Date text and Amount text sample range A1:B3.

Hands-on practice

Step 1: Open File > Settings. Use the visible File menu path; do not use command search. In the Settings dialog, locate both Locale and Time zone before changing anything.

Google Sheets File menu with the pointer on Settings.

Step 2: In Settings, choose the locale you want the spreadsheet to use and choose the intended time zone. Select Save settings. If Sheets reloads the workbook, wait for it to finish before entering new values.

The Settings for this spreadsheet dialog shows Locale set to Vietnam and Time zone set to (GMT+07:00) Hanoi, with the pointer on Save and reload.

Step 3: In an empty row, type one date and one number using the conventions of the locale you selected. Confirm that Sheets recognizes them as values rather than leaving them as plain text. Then remove the test row so the original A1:B3 sample remains unchanged.

Temporary row A4:B4 contains 28/09/2026 and 1.234,56, both recognized by Google Sheets under the Vietnam locale.

Checkpoint

CheckExpected result
Settings dialogLocale and Time zone show the values you intentionally selected.
New date entrySheets interprets the date according to the selected locale’s date order.
New number entrySheets interprets decimal and thousands separators according to the selected locale.
Source sampleA1:B3 still contains the original Date text and Amount text rows.

The locale setting controls regional parsing/formatting conventions for the spreadsheet; the time-zone setting controls the spreadsheet’s time context for time-sensitive calculations.

After the temporary test row is removed, A1:B3 again contains the original Date text and Amount text sample.

Common mistakes and fixes

Do not overwrite the original sample to force the expected appearance. Test in an empty row, verify how Sheets interprets the new entry, and then remove that temporary row.

Independent practice

Switch to a second locale, save the settings, and enter one temporary date and number using that locale’s conventions. Compare the interpretation with your first test, then restore the settings you want to keep.

Key takeaways

  • ✓Spreadsheet Locale and Time zone are changed from File > Settings.
  • ✓Locale affects regional conventions such as date order and number separators.
  • ✓Time zone provides the spreadsheet’s time context for time-sensitive calculations.
  • ✓Save settings and allow any reload to finish before testing new entries.
  • ✓Verify changes with temporary entries instead of overwriting the source sample.
QUICK CHECK

Check your understanding

Answer four questions about the practice sheet.

1. Where do you change a spreadsheet’s Locale and Time zone?
2. Which setting most directly affects whether 9/28/2026 or 28/09/2026 is interpreted as a valid date?
3. What should you do after saving a Locale or Time zone change if Sheets reloads?
4. What is the safest way to verify the new regional settings in this lesson?

Next lesson

Continue in the recommended learning order with Use right-to-left sheet layout.