Is the Flexbox Generator free?

Yes — the Flexbox Generator is completely free, with no account, subscription, signup, or usage limits.

Is my data uploaded or stored?

No. The Flexbox Generator processes everything locally in your browser. Your input is never uploaded, saved, or shared with any server.

Does the Flexbox Generator work offline?

Yes. Once the page has finished loading, the Flexbox Generator works without an internet connection.

Which browsers does the Flexbox Generator work in?

The Flexbox Generator works in all modern browsers, including Chrome, Firefox, Safari, and Edge — no plugins or extensions needed.

How do I centre an element with flexbox?

Set justify-content: center and align-items: center on the flex container. This centres the child both horizontally and vertically.

What is the difference between justify-content and align-items in flexbox?

justify-content aligns items along the main axis (horizontally in row, vertically in column). align-items aligns them along the cross axis — the opposite direction.

Flexbox Generator

Visually build CSS flexbox layouts and export the ready-to-use code.

flex-direction

flex-wrap

justify-content

align-items

gap 8px

Preview items 6

CSS

.container {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: flex-start;
  align-items: center;
  gap: 8px;
}

Free browser-based tool · Runs 100% on your device · Last updated July 7, 2026

What is the Flexbox Generator?

The free CSS Flexbox Generator produces ready-to-use flexbox CSS by letting you configure every major property with dropdowns and see a live layout preview. Set flex-direction, flex-wrap, justify-content, and align-items — and adjust the number of preview items to see exactly how your layout will behave. Copy the CSS for both the container and items in one click.

→ Build a responsive navigation bar layout without writing flexbox from scratch.
→ Centre a div both horizontally and vertically with the correct flexbox properties.
→ Design a card grid that wraps automatically on smaller screens.
→ Understand how justify-content and align-items interact visually before committing to code.
→ Quickly prototype column or row layouts for a web app UI.

How to Use the Flexbox Generator

1 Set the flex-direction dropdown to row, row-reverse, column, or column-reverse.
2 Set flex-wrap to nowrap, wrap, or wrap-reverse.
3 Adjust justify-content (main axis alignment) and align-items (cross-axis alignment) using their dropdowns.
4 Change the item count slider to see how the layout responds with more or fewer items.
5 Copy the generated CSS from the output panel — it includes both the container class and individual item class.

Key Features

📦
Full flexbox controls

Configure direction, wrap, justify-content, and align-items with dropdowns.
👁️
Live layout preview

See exactly how items arrange in real time as you change each property.
🔢
Adjustable item count

Test the layout with different numbers of child items.
📋
Complete CSS output

Generated CSS includes the container and child item classes ready to paste.

Example Usage

Example Input

direction: row, wrap: wrap, justify-content: space-between, align-items: center

Example Output

.container {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
}

Frequently Asked Questions about the Flexbox Generator

What is the Flexbox Generator?: The Flexbox Generator is a free online tool that lets you visually build CSS flexbox layouts and export the ready-to-use code. It runs entirely in your browser, so there is nothing to install and nothing is uploaded to a server.
Is the Flexbox Generator free?: Yes — the Flexbox Generator is completely free, with no account, subscription, signup, or usage limits.
Is my data uploaded or stored?: No. The Flexbox Generator processes everything locally in your browser. Your input is never uploaded, saved, or shared with any server.
Does the Flexbox Generator work offline?: Yes. Once the page has finished loading, the Flexbox Generator works without an internet connection.
Which browsers does the Flexbox Generator work in?: The Flexbox Generator works in all modern browsers, including Chrome, Firefox, Safari, and Edge — no plugins or extensions needed.
How do I centre an element with flexbox?: Set justify-content: center and align-items: center on the flex container. This centres the child both horizontally and vertically.
What is the difference between justify-content and align-items in flexbox?: justify-content aligns items along the main axis (horizontally in row, vertically in column). align-items aligns them along the cross axis — the opposite direction.