How to Use Cal.com as a Free Calendly Alternative (Complete Setup Guide)

I was paying $16/month for Calendly. Two seats, one scheduling page, basic routing. When I switched to Cal.com, the bill went to $0 and I gained features I didn't have before. That was 14 months ago.

Cal.com is open source, free on the hosted version for most use cases, and honestly better than Calendly in several areas. Here's the full setup.

Cal.com vs Calendly: The Honest Comparison

Calendly wins on: brand recognition (some clients will recognize it and trust it faster), slightly cleaner default booking UI, and enterprise features for large teams. Cal.com wins on: price ($0 vs $8-20/mo), routing forms on free tier, self-hosting option if you need full data control, and open-source customization.

For 9 out of 10 solo operators and small business owners, Cal.com is the better choice. The one case I'd stay on Calendly: if you're booking enterprise clients who expect a polished Calendly page specifically.

Initial Setup (30 Minutes)

Go to cal.com and create a free account. Set your username - this becomes your booking URL (cal.com/yourname). Connect your Google Calendar or Outlook under Integrations. Set your availability in the Availability tab. Create your first Event Type: name it, set duration (15/30/60 min), add a description, and pick your buffer time between calls.

That's the core setup. Under 30 minutes if you don't overthink it. Share your cal.com/yourname link and people can book you.

Setting Up Routing Forms for Lead Qualification

This is where Cal.com earns its edge. Under Routing Forms, create a form that asks qualification questions before showing the booking calendar. Budget range, company size, what they want to discuss. Based on their answers, route them to different event types - or block the booking entirely if they don't meet your criteria.

This feature costs $16/month on Calendly (Teams plan). Free on Cal.com. Set it up once and every booking gets pre-qualified. You go into calls knowing the person's budget and intent.

Zoom and Google Meet Integration

Under Integrations, add your video conferencing tool. Zoom and Google Meet both connect in under 5 minutes. Cal.com automatically generates a unique meeting link for each booking and includes it in the confirmation email. No manual link creation, no Zoom account management.

One thing to know: Zoom integration requires a Zoom account that has the App Marketplace enabled. If you're on Zoom Basic (free), this works. If you use Google Meet, the integration is even simpler - just authenticate with your Google account.

Embedding Cal.com in Your Website

In your Event Type settings, find the Embed option. Cal.com gives you inline embed code, popup embed code, and a floating button. Copy the script tag and the div or button element, paste them into your website HTML. The calendar renders directly on your page - visitors never leave your site to book.

Cal.com is part of the sovereign stack we run at AI Avengers - the pay per usage setup that replaced $1,100/month of SaaS tools. The full breakdown is inside AI Avengers Lab at aiavengers.team/lab.

Related reading from this series

This post is part of the Replace SaaS with Claude playbook. The full series covers every step with concrete workflows, pricing, and lessons from running my own business on Claude.

For more playbooks, visit the AI Avengers home page or join the AI Avengers Skool community to put these into practice with weekly office hours.