⚖️ Comparison · Updated for 2026

Tabs vs Spaces

Side-by-side comparison, when-to-use-each guide, and instant conversion. Reviewed for 2026.

Quick answer: Tabs are configurable per-developer (each person sees their preferred width). Spaces produce identical alignment regardless of editor settings. Most modern style guides default to spaces (Python PEP 8: 4 spaces; Google JavaScript: 2 spaces). But Go uses tabs by default. The 'right' answer is whatever your team agrees on.
Decision guide — when to use which
Use Tabs when…

Go (official). Makefiles (required). Accessibility (configurable width helps low-vision developers).

Use Spaces when…

Python (PEP 8 recommends 4 spaces). JavaScript (most style guides: 2 spaces). Ruby (2 spaces). Markdown lists in many parsers.

📊 Side-by-side comparison
Aspect Tabs Spaces
Python PEP 8 Discouraged 4 spaces
Google JS style No 2 spaces
Go fmt Tabs No
Makefiles Required Will fail
Accessibility Configurable for low-vision Fixed width

Frequently asked

?

Which actually wins by usage?

Spaces are more common overall, though surveys show a fairly even split among developers and it varies by language. Spaces dominate in Python, JavaScript, Ruby, C# and PHP; tabs dominate in Go. Mixed in C/C++.

?

Why does Go use tabs?

Go's authors (Rob Pike, Ken Thompson, Robert Griesemer) prioritised one-true-format and developer choice. Tabs let each developer view code at their preferred width while keeping the file identical.

Reviewed for 2026. This comparison is general guidance based on publicly available information. Prices, rates, rules and specifications change, so check current details with the provider or an official source before making a decision. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project. We don't sell SEO links or accept paid placements in this content.

Frequently asked questions

Which actually wins by usage?

Spaces are more common overall, though surveys show a fairly even split among developers and it varies by language. Spaces dominate in Python, JavaScript, Ruby, C# and PHP; tabs dominate in Go. Mixed in C/C++.

Why does Go use tabs?

Go's authors (Rob Pike, Ken Thompson, Robert Griesemer) prioritised one-true-format and developer choice. Tabs let each developer view code at their preferred width while keeping the file identical.