Complete Guide to Cloudflare Free Tier Resources

This guide provides a detailed inventory of every Cloudflare service available on the free tier, with usage limits, code examples, and production considerations.

Workers — Serverless Functions at the Edge

Cloudflare Workers run JavaScript, Python, Rust, and Go across 300+ data centers.

Free Tier Limits:

• 100,000 requests per day
• 10ms CPU time per request
• 1,000 requests per minute burst
• 128MB memory per Worker

Use Cases:

• API endpoints and webhooks
• URL rewrites and redirects
• A/B testing middleware
• Authentication proxies

// Example: Rate-limiting API gateway
export default {
  async fetch(request, env) {
    const ip = request.headers.get('CF-Connecting-IP')
    const count = await env.KV.get(`rate:${ip}`)
    if (count && parseInt(count) > 100) {
      return new Response('Rate limited', { status: 429 })
    }
    await env.KV.put(`rate:${ip}`, String(parseInt(count || '0') + 1), { expirationTtl: 3600 })
    return fetch(request)
  }
}

KV — Global Key-Value Store

Low-latency key-value storage optimized for high-read workloads.

Free Tier Limits:

• 1,000,000 reads per day
• 1,000 writes per day
• 1GB total storage
• 1000 operations per second

D1 — Serverless SQLite Database

Edge-native relational database with SQLite compatibility.

Free Tier Limits:

• 5GB storage
• 5,000,000 read operations per day
• 100,000 write operations per day

CREATE TABLE posts (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  slug TEXT UNIQUE NOT NULL,
  title TEXT NOT NULL,
  body TEXT,
  created_at DATETIME DEFAULT CURRENT_TIMESTAMP
);

R2 — S3-Compatible Object Storage

Zero-egress object storage wire-compatible with the S3 API.

Free Tier Limits:

• 10GB storage
• 1,000,000 read ops/month
• Zero egress fees

Pages — Static Site Hosting

Unlimited sites with Git integration and preview deployments.

Free Tier Limits:

• Unlimited sites and bandwidth
• 500 build minutes/month
• 25MB per file

Comparison

Resource	Cloudflare	AWS	Vercel
Compute	100k req/day	1M req/mo	100h/mo
Database	5GB D1	—	—
Storage	10GB R2	5GB S3	—
Egress	$0	$0.09/GB	$0.15/GB
Total	$0/mo	~$50/mo	$20/mo

Conclusion

Cloudflare free tier provides enough resources to run production applications serving thousands of users daily — at zero infrastructure cost.