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calculator.net

https://calculator.net· First analyzed 15 Feb 2026· Updated 15 Feb 2026
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calculator.net
Desktop screenshot of calculator.net
Mobile screenshot of calculator.net
Mobile

Sponsored

Hosting Provider

interserver.net

IP Address

69.10.42.201

Server Location

🇺🇸 Secaucus, United States

ASN

AS19318

Organization

Interserver, Inc

Server

Apache

Nameservers

pdns14.domaincontrol.com.pdns13.domaincontrol.com.

Performance

Page Speed

5 KB
10 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
InterServer

Progressive Web App

Web ManifestApple Touch Icon

Technology Stack

2 Technologies Detected

Web Servers

1

Languages

1

SEO Analysis

D52/100
7
5
0
C
calculator.netcalculator.net

Calculator.net: Free Online Calculators - Math, Fitness, Finance, S...

Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with in-depth information.

Title truncated.
Title Length73 chars

Recommended: 50-60 chars

Description Length155 chars

Recommended: 120-160 chars

Issues (0)

    Crawlability

    Sitemap

    Type: standard

    220 URLs

    robots.txt

    2 rules

    Sitemap reference found

    Allows all crawlers

    Sponsored

    Sponsored

    F

    Security Score

    0%Critical
    Critical / Transactional

    HTTPS

    No WAF

    203d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    GoDaddy.com, Inc.

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/2

    Valid From

    05.08.2025

    Valid Until

    06.09.2026

    OCSP Stapling

    Enabled

    Subject Alternative Names (2)

    *.calculator.netcalculator.net

    SHA-256 Fingerprint

    84:38:AC:2B:84:10:EC:84:4C:72:B9:01:C6:83:B6:03:3A:71:EC:CD...

    Top Recommendations

    Security recommendation preview

    HTTP Headers

    Developer Console

    cache-control
    🔴 No Cache(no-store, no-cache, must-revalidate)
    content-encoding
    📦 Gzip(gzip)
    content-length
    3055
    content-type
    text/html; charset=UTF-8
    date
    Sun, 15 Feb 2026 08:16:05 GMT
    expires
    Thu, 19 Nov 1981 08:52:00 GMT
    Good Warning Issue

    Email Infrastructure

    GoDaddy Email

    Score

    45

    SPF
    DKIM
    DMARC

    MX Records (2)

    mailstore1.secureserver.net
    smtp.secureserver.net

    Domain Information

    calculator.net

    Domain Age
    27y 7m

    Created

    07.07.1998

    Expires

    01.11.2026

    Last Updated

    04.10.2023

    Registrar

    GoDaddy.com, LLC

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    GDPR Indicators

    Privacy policy page linked

    Typography & Readability

    arial

    80/100
    Readability
    /30
    30/40

    16px · LH --

    Hierarchy
    /20
    20/25

    1.62x ratio

    WCAG
    /25
    15/15

    Contrast: undefined

    Performance
    /25
    20/20

    System fonts

    Heading Font

    arial

    Sans26px

    Body Font

    arial

    Sans16px

    Contrast Ratio

    --

    Reading Comfort

    Single Font Family

    left aligned
    26px
    h1

    ✅ Excellent readability: 16px body text is ideal for all devices.

    ✅ Good hierarchy: Clear distinction between headlines and body text.

    ✅ Excellent performance: System fonts eliminate font loading delays (better LCP).

    ✅ Consistent design: Single font family with weight variations is a modern best practice.

    Business & Marketing Stack

    1 Tools Detected

    Growing

    Behavior Analytics

    1

    User behavior and product analytics

    1

    Categories

    1

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    4 Resources

    2
    Scripts
    2
    Styles
    2
    Async
    0
    Defer

    Top Script Sources

    d26tpo4cm8sb6k.cloudfront.net(2)

    Sponsored

    Last analyzed: 15 Feb 2026 at 08:16

    Historical Analysis & Change Tracking