Cloud Cost Calculator:
Compare 8 providers instantly
Pick your frontend host and backend service, enter your expected usage, and see exactly what each provider will cost you. We factored in every free tier, credit, and gotcha.
Frontend Provider
Backend Provider
Expected Users
Enter your expected user count and we'll automatically estimate bandwidth, requests, compute, and storage based on typical SaaS usage patterns. Fine-tune individual values below if you know your exact numbers.
Expected Monthly Usage
Your Stack Estimate
Frontend Comparison
Backend Comparison
How it works
Pick your stack
Select a frontend host (Vercel, Netlify, Cloudflare, Amplify) and a backend service (Supabase, Firebase, Render, Railway). Toggle the backend off for static sites.
Enter your usage
Adjust bandwidth, requests, API calls, storage, and auth users. Every free tier and included credit is already factored in — you only see what you actually pay.
Compare and save
See your total stack cost and a side-by-side comparison of all providers. Download a PDF report to share with your team or finance.
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Frequently asked questions
What is the Cloud Cost Calculator?
The Best Answer Hub Cloud Cost Calculator is a free, privacy-first browser tool that compares real monthly hosting costs across 8 cloud providers — Vercel, Netlify, Cloudflare, AWS Amplify, Supabase, Firebase, Render, and Railway. Enter your expected bandwidth, requests, CPU hours, storage, and auth users to see exactly what each provider will charge you. We factored in every free tier, credit, and gotcha so you only see what you actually pay. Everything runs instantly in your browser — no signup, no server, no data collection.
How much does it cost to host a web app at 10,000 users?
It depends entirely on what kind of app. A lightweight SaaS dashboard at 10K monthly users typically runs $50–150/month across most stacks. The same user count on an image-heavy or media app can hit $300–800 because of bandwidth costs. The calculator above asks you what kind of app you're building first — that's the variable that matters most, more than the user count itself.
What's the cheapest stack for a Next.js SaaS?
For most Next.js SaaS apps under 50K users, the cheapest credible stack is Cloudflare Pages + Workers paired with Supabase or a VPS-hosted Postgres. Cloudflare doesn't charge for bandwidth, which is the cost line that bites most growing apps. Run your specific numbers through the calculator — for some app types Vercel + Supabase can be competitive once you factor in developer time.
Why is my hosting bill so much higher than the pricing page suggested?
Three usual suspects. First, bandwidth — most pricing pages quote a generous-looking included amount, but image-heavy or media apps blow past it fast, and overage rates are $0.09–$0.15 per GB. Second, compute meters you didn't notice — active CPU time, function invocations, image optimization, and edge requests are often billed separately from the base plan. Third, per-seat charges if your team grew. The calculator surfaces all three so you can see which one is going to hit you.
Are there any fixed-price platforms for hosting?
Mostly no — the industry standard is base fee plus usage-based overages, which is why surprise bills happen. Closest you'll get to fixed pricing: a VPS (Hetzner, DigitalOcean, Contabo) at $5–20/month flat, where you self-host. Render's plan tiers are the most predictable among managed PaaS options. The calculator flags which providers in your comparison have hard spending caps available — that's the closest thing to safety.
How much will my hosting cost at 100,000 users?
At 100K users the spread between providers gets wide — typically $200 to $2,000+/month depending on stack and app type. This is the point where bandwidth-free platforms (Cloudflare, Railway) pull significantly ahead of bandwidth-charging ones (Vercel, Netlify, Amplify) for image- or media-heavy apps. Use the calculator's grid view to see the full spread before you commit to a stack.
What's the cheapest backend for a static site?
If your site is genuinely static (no logins, no database), you don't need a backend — Cloudflare Pages or GitHub Pages will host it free indefinitely. If you need light dynamic features (form submissions, comments, simple auth), Cloudflare Workers + D1 or Supabase free tier are the cheapest credible options. The calculator's "no backend needed" toggle covers this case.
Vercel vs Cloudflare vs Netlify — what's the actual cost difference?
At identical usage, the gap can be 5–10× for bandwidth-heavy apps. Cloudflare doesn't charge for bandwidth at all. Vercel charges $0.15/GB after 1TB and meters CPU, memory, and invocations separately. Netlify uses a credit system that bundles bandwidth, compute, and deploys into one allowance — easy to mis-estimate. Run your specific app type and user count through the grid to see the real numbers.
What are the hidden costs of cloud hosting?
The four most-missed line items, in rough order of damage caused: (1) egress bandwidth — every GB leaving the provider is metered; (2) database operations — read amplification from listeners or unindexed queries scales fast; (3) per-seat team charges that compound with team size; (4) build minutes and deploy credits that drain even when your app has no traffic. The calculator includes all four in its estimates.
Can I run my SaaS for under $5/month?
At pre-launch or early validation stage, yes — generous free tiers across Cloudflare Pages, Supabase, and Firebase will keep you at $0. Once you have real users (a few hundred MAU), $5/month becomes harder on managed platforms; a $5 Hetzner or DigitalOcean VPS with self-hosted Postgres is the standard way to stay under that line. The tradeoff is your time managing the server.
When should I move from a managed PaaS to a VPS?
Two common trigger points. First, when you're running 4+ small projects on managed services — each project's base fee compounds and a single $20 VPS can host them all. Second, when your managed database bill alone passes $200–300/month — that's usually when self-hosted Postgres on a VPS starts paying off, factoring in the time cost of managing it yourself. Below those thresholds, managed services almost always win on total cost (including your time).
What does my hosting provider not tell you about pricing?
A few common omissions: pricing pages quote the base plan but rarely the overage rates in the same view; "free tier" almost never means "capped" — it means "soft limit then bill"; per-seat charges compound as your team grows; and many platforms charge separately for related services (image optimization, edge middleware, dedicated compute) that aren't shown on the main pricing page. The calculator pulls overage rates from each provider's actual pricing docs.
How do I cap spending so I don't get a surprise bill?
Varies by provider, and this is genuinely uneven. AWS has Billing Alerts but no hard cap by default. GCP supports budget caps that can disable billing on a project. Cloudflare and Render have effective spending limits. Vercel, Netlify, and Firebase historically don't offer hard caps without enterprise contracts — meaning a viral moment or a bot attack can produce a real five-figure bill. Always set up billing alerts at minimum, ideally before you deploy.
What people pay
Bandwidth ate 60% of the bill. Migrating images to Cloudflare R2 typically halves this.
No bandwidth charges + lean usage. The structural cost winner for API-first apps.
Firestore read amplification accounted for ~$90 of that. Common Firebase pattern.
Same projects on managed PaaS would be $150+/month. Tradeoff is time spent managing the box.
Scenarios based on public bill reports and modeled estimates. Your costs will vary.