Calculate SSL/TLS certificate costs for single, wildcard, and multi-domain certificates. Compare Let's Encrypt, DV, OV, and EV certificate pricing.
SSL/TLS certificates are essential for encrypting web traffic and are now required for SEO, browser trust, and compliance. While Let's Encrypt provides free DV certificates, organizations often need paid certificates for wildcard coverage, extended validation (EV), or multi-domain (SAN) support.
Pricing ranges dramatically: a single-domain DV certificate can cost $0–10/year, a wildcard DV is $50–150/year, OV certificates run $50–200/year, and EV certificates cost $100–500/year. Multi-domain (SAN) certificates charge a base price plus per-additional-domain fees.
This calculator estimates the total cost of SSL certificates based on type, number of domains, and term length. Use it to compare the cost of individual certificates versus wildcard or SAN certificates, and to determine whether paid certificates are worth the investment over free alternatives.
Understanding this metric in precise terms allows technology leaders to make evidence-based decisions about scaling, architecture, and infrastructure investment priorities for their organizations. Tracking this metric consistently enables technology teams to identify system performance trends and address potential issues before they impact end users or business operations.
Free certificates from Let's Encrypt work well for simple sites, but organizations with many subdomains, compliance requirements, or customer-facing trust needs often require paid certificates. This calculator helps you compare the total cost of different certificate strategies and avoid overpaying. Consistent measurement creates a reliable baseline for tracking system health over time and identifying degradation before it impacts users or triggers costly production outages.
Initial Cost = cert_price × domains Renewal Cost = renewal_price × domains × (years − 1) Total = Initial Cost + Renewal Cost
Result: $675.00 over 3 years
Three wildcard DV certificates at $75/year each. Year 1: $75 × 3 = $225. Years 2–3: $75 × 3 × 2 = $450. Total: $675 over 3 years. Alternatively, a single SAN certificate covering all three domains might cost $150–200/year, potentially saving $25–75/year.
Single-Domain DV: $0–10/year, covers one FQDN. Wildcard DV: $50–150/year, covers *.domain.com. OV: $50–200/year, shows organization in cert details. EV: $100–500/year, highest validation level. SAN/UCC: $100–300/year base + $10–30/additional domain. Let's Encrypt: free DV and wildcard with 90-day renewal.
Let's Encrypt: free DV and wildcard via ACME protocol. AWS ACM: free for ALB, CloudFront, API Gateway. Cloudflare: free Universal SSL for proxied domains. Google-managed: free for GCP load balancers. For AWS-native workloads, ACM eliminates all certificate costs.
Organizations with 50+ certificates should consider certificate management platforms like Venafi or DigiCert CertCentral. Automated lifecycle management prevents expiration outages. For cloud-native workloads, service mesh solutions like Istio or Linkerd provide automatic mTLS with built-in certificate rotation.
Yes. Let's Encrypt certificates provide the same level of encryption as paid DV certificates. The difference is purely in validation level and features (wildcard support, warranty, trust indicators). For most sites, Let's Encrypt is perfectly secure.
DV (Domain Validation) verifies domain ownership only—fastest and cheapest. OV (Organization Validation) verifies the organization's identity. EV (Extended Validation) requires extensive business verification and may show the company name in the browser. All three provide the same encryption strength.
For most websites, Let's Encrypt (free DV) is sufficient. Consider paid certificates if you need: wildcard coverage without ACME challenges, OV/EV for compliance or trust, SAN certificates for multiple root domains, or a warranty from the certificate authority.
Wildcard DV certificates cost $50–150/year from providers like Sectigo, DigiCert, or GlobalSign. Let's Encrypt offers free wildcards but requires DNS-01 challenge validation. ACM provides free wildcards for AWS services.
Browsers will show a full-page security warning, blocking most visitors. Google may de-index HTTPS pages with expired certificates. Set up automated renewal and monitoring alerts at least 30 days before expiration to prevent outages.
Yes, using a SAN (Subject Alternative Name) or UCC (Unified Communications Certificate). These can cover multiple root domains (example.com, example.org, example.net) plus subdomains. Pricing is usually a base fee plus $10–30 per additional domain.