calculator.net
Calculator.net: Free Online Calculators - Math, Fitness, Finance, Science
Last scanned Jul 29, 2026, 12:00 PM · 11 views
Overall score
Great
Summary
Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with in-depth information. This website uses PHP. SEO is fair (65/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Title longer than 60 characters.
Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with in-depth information.
Top issues to fix
12 issues found · 2 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
1 cookie without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
Title longer than 60 characters
SEOShorten the title to under 60 characters so search results don't truncate it.
+6 more issues — details in the sections below.
SEO
6 issue(s) found
Performance
771 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
-3 overall since Jul 18, 2026
- Overall
- 81
- SEO
- 65
- Security
- 65
- Performance
- 100
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with in-depth information.
Meta tags
- Title
- Calculator.net: Free Online Calculators - Math, Fitness, Finance, Science
- Description
- Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with in-depth information.
- Canonical
- Language
- en
- Charset
- Viewport
- width=device-width, initial-scale=1.0
- Robots meta
- Manifest
- https://www.calculator.net/manifest.json
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- —
- IP address
- —
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A | — |
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- GoDaddy.com, Inc.
- Subject
- *.calculator.net
- Valid from
- Aug 5, 2025
- Valid to
- Sep 6, 2026
- Days until expiry
- 39
- SAN domains
- *.calculator.net, calculator.net
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 1 cookie(s) observed
Content & assets
Headings
H1 1 · H2 0 · H3 0
Links
51 internal · 0 external · 20 broken
Images
6 total · 0 missing alt
Scripts / Styles
2 scripts · 2 stylesheets
JS / CSS size
0 B · 290 B
Page size
11.4 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Title longer than 60 characters
- Missing canonical link
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://calculator.net
- Final URL
- https://www.calculator.net/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 771 ms
- HTML size
- 11.4 KB
- Redirect chain
- https://calculator.net → https://www.calculator.net/
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Frequently asked questions
- What technology does calculator.net use?
- calculator.net is built with PHP, Apache.
- Is calculator.net secure (HTTPS)?
- Yes. calculator.net uses TLS 1.3 with a certificate issued by GoDaddy.com, Inc., valid until Sep 6, 2026.
- Who hosts calculator.net?
- Hosting provider information for calculator.net is not available yet.
- What is calculator.net's SEO score?
- calculator.net scored 65/100 for SEO in the latest analysis (fair).
- What is calculator.net's overall website score?
- calculator.net has an overall SiteGraph score of 81/100, combining SEO, performance, security, and accessibility.
- Has calculator.net's score changed over time?
- calculator.net's overall score has declined by 3 points (from 84 to 81) since Jul 18, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card