Free Online Tools — DNS, SSL, WHOIS, Email & Hosting Calculators | The PowerHost
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tools ▸ free forever · no signup

Free tools for hosting,DNS & servers.

42 tools to diagnose domains, secure email, check SSL, generate config and size servers — fast, free and privacy-first. Network tests run from our servers in India.

free tools42
cost₹0
signup needednone
tested fromIndia

featured ▸ seo checker

Check your website's SEO in seconds.

A complete on-page, technical, speed, security, trust and domain audit — 101+ checks, a prioritised action plan, and export to PDF, CSV or JSON. Free, no signup.

On-PageTechnicalContentSpeedSecurityTrust & E-E-A-TDomain & WHOISSocial & AI search
Run a free SEO audit

tool category ▸ dns

Domain & DNS tools.

Look up records, owners and networks for any domain or IP — live, from public DNS and RDAP.

9 tools
WHOIS Lookup Find a domain's registrar, registration and expiry dates, and nameservers. Open tool Domain Availability Checker Check if a .in, .com or 500+ other domain names are available and see INR prices. Open tool ai AI Domain Name Generator Describe your business and get brandable, available domain name ideas. Open tool DNS Lookup Check A, AAAA, CNAME, MX, NS, TXT, SOA, CAA and SRV records for any domain. Open tool Reverse DNS Lookup Resolve an IP address to its PTR hostname and check forward-confirmed rDNS. Open tool MX Lookup Find the mail servers for a domain, their priority, IPs and detected provider. Open tool IP Lookup Resolve a domain to its IPs and see the network owner, CIDR range and country via RDAP. Open tool What Is My IP See your public IP address, ISP network, reverse DNS and browser details instantly. Open tool IPv4 Subnet Calculator Calculate network, broadcast, usable host range and mask from any IPv4 CIDR. Open tool

tool category ▸ email

Email Security tools.

Validate SPF, DKIM and DMARC, and check blacklists before your mail hits spam.

4 tools
SPF Checker Validate your SPF record, count DNS lookups against the limit of 10 and spot errors. Open tool DKIM Checker Find and validate a DKIM public key by selector — or auto-detect common selectors. Open tool DMARC Checker Inspect your DMARC policy, reporting addresses, alignment and enforcement level. Open tool Email Blacklist Checker Check an IP or domain against Spamhaus, Barracuda, SORBS and other DNSBLs. Open tool

tool category ▸ network

Network & SSL tools.

Certificates, headers, ports and latency — tested from our servers in India.

6 tools
SSL Checker Check SSL certificate validity, issuer, expiry date, SAN names, chain and TLS version. Open tool Free SSL Certificate Generator Issue a free, browser-trusted Let's Encrypt SSL certificate with DNS or HTTP validation. Open tool CSR Generator Generate a 2048/4096-bit RSA private key and Certificate Signing Request for SSL. Open tool HTTP Header Checker Fetch a URL and inspect status code, redirect chain, response and security headers. Open tool Open Port Checker Test whether a TCP port is open on a host or IP — SSH, RDP, MySQL, HTTP and more. Open tool Ping Test (TCP) Measure TCP connection latency from our Indian servers to any host — min, avg, max, jitter. Open tool

tool category ▸ generate

Developer Generators tools.

Passwords, UUIDs, cron schedules and .htaccess rules — generated in your browser.

5 tools
Password Generator Create strong, cryptographically random passwords with adjustable length and character sets. Open tool Random String Generator Generate secure random strings, API keys, tokens and hex secrets in bulk. Open tool UUID Generator Generate UUID v4 (random) and v7 (time-ordered) identifiers in bulk. Open tool Cron Expression Generator Build and explain cron expressions in plain English and preview the next run times. Open tool .htaccess Generator Generate Apache/LiteSpeed .htaccess rules for HTTPS, www, redirects, caching and security. Open tool

tool category ▸ encode

Encoding, Hashing & Code tools.

Base64, URL encoding, hashes, JWT decoding and minification — nothing leaves your browser.

5 tools
Base64 Encoder / Decoder Encode text or files to Base64 and decode Base64 back — UTF-8 and URL-safe supported. Open tool URL Encoder / Decoder Percent-encode text for safe use in URLs and query strings, or decode encoded URLs. Open tool Hash Generator Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512 and CRC32 hashes of text or files. Open tool JWT Decoder Decode a JSON Web Token header and payload, and see issued/expiry times — locally. Open tool CSS / JS Minifier Minify CSS and JavaScript — strip comments and whitespace and see the bytes saved. Open tool

tool category ▸ design

Design & Accessibility tools.

Check colour contrast against WCAG before you ship.

1 tool
Color Contrast Checker Check the WCAG 2.2 contrast ratio between text and background colours — AA and AAA. Open tool

tool category ▸ calculate

Hosting Calculators tools.

Find the right plan, estimate bandwidth and transfer times, and price a VPS in INR.

5 tools
Hosting Plan Finder Answer a few questions about your site and traffic to find the right hosting plan. Open tool VPS Price Calculator Configure CPU, RAM, NVMe and add-ons and see your monthly VPS price in INR. Open tool Server Sizing Calculator Estimate the vCPU, RAM and NVMe a website, store, app or API needs — and the matching VPS. Open tool Bandwidth Calculator Estimate monthly website bandwidth from visitors, page views and page size. Open tool Data Transfer Time Calculator Estimate how long a file, backup or server migration takes at a given connection speed. Open tool

tool category ▸ infra

Server & Storage tools.

RAID capacity, backup storage, uptime SLAs and VM density — worked out in seconds.

4 tools
RAID Calculator Calculate usable capacity, fault tolerance and efficiency for RAID 0, 1, 5, 6, 10, 50 and 60. Open tool Backup Storage Calculator Estimate backup storage from data size, change rate, frequency and retention. Open tool Uptime & SLA Calculator Convert an uptime percentage into allowed downtime per day, week, month and year. Open tool VM Capacity Calculator Estimate how many VMs fit on a host from cores, RAM, storage and overcommit ratios. Open tool

tool category ▸ sizing

Business Application Sizing tools.

Right-size servers for Tally Prime and multi-user Windows RDP.

2 tools
Tally Server Sizing Calculator Estimate the CPU, RAM and storage a multi-user Tally Prime cloud server needs. Open tool Windows RDP Sizing Calculator Estimate vCPU, RAM and storage for a multi-user Windows RDP / Remote Desktop server. Open tool

built on ▸ real infrastructure

Built for website owners,
developers & server teams.

These are the same checks our support engineers run every day on domains, mail, SSL and servers. When a result needs fixing, the infrastructure behind it is one click away.

Explore hosting plans
india

Tested from India

DNS, SSL, ping and port tests run from our own servers in India — so you see what Indian visitors and resolvers see, not a US data centre.

private

Privacy-first

Generators, encoders and calculators run entirely in your browser. Network lookups are processed in real time and never stored or logged.

free

Free, no limits that matter

No signup, no paywall, no watermark. Fair-use rate limits only protect the service from abuse.

fix

Help when it's red

Stuck on an SPF error, an expiring certificate or a slow server? Our 24×7 team can fix it — or move you to hosting where it is set up right.

faq ▸ before you buy

Free online tools — FAQ

Are The PowerHost tools free to use?+
Yes. All 42 tools are free with no signup. Fair-use rate limits apply to the network tools to keep them fast for everyone.
Do you store the domains, IPs or text I enter?+
No. Browser-based tools (generators, encoders, calculators) never send your data anywhere. Network tools process your query in real time and do not log or store it.
Where do the network tests run from?+
DNS, SSL, HTTP header, ping and port tests run from The PowerHost servers in India, so latency and DNS results reflect what Indian users experience.
Can these tools change my DNS or server settings?+
No. Every tool is read-only — it inspects public information or generates output for you to copy. Nothing on your domain or server is changed.
Which tools should I use to fix email going to spam?+
Run the SPF Checker, DKIM Checker and DMARC Checker, then the Email Blacklist Checker. Together they cover the authentication and reputation checks Gmail and Outlook apply.
Can The PowerHost help me fix a failed result?+
Yes. Open a ticket from the contact page or chat with us — our engineers help with DNS, SSL, email authentication and server sizing every day.

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