https://securetechie.com/tools/Recent content in Free IT Tools & Calculators on Secure TechiesHugoen-usSun, 06 Sep 2026 00:00:00 -0700https://securetechie.com/tools/raid-calculator/Mon, 01 Jan 0001 00:00:00 +0000https://securetechie.com/tools/raid-calculator/<h2 id="free-raid-calculator-for-capacity-efficiency-and-fault-tolerance">Free RAID calculator for capacity, efficiency, and fault tolerance</h2> <p><strong>Here is the short version:</strong> usable space is always less than raw except on RAID 0, and RAID 0 is not protection. This <strong>RAID calculator</strong> estimates usable capacity, efficiency, fault tolerance, and a first-pass IOPS range for RAID 0, 1, 1E, 5, 6, 10, 50, and 60 before you buy disks.</p>https://securetechie.com/tools/surveillance-storage-calculator/Mon, 01 Jan 0001 00:00:00 +0000https://securetechie.com/tools/surveillance-storage-calculator/<h2 id="free-cctv--nvr-storage-calculator">Free CCTV / NVR storage calculator</h2> <p><strong>Here is the short version:</strong> storage is bitrate × time × cameras × motion fraction, then a buffer. This <strong>surveillance storage calculator</strong> (CCTV / NVR hard drive calculator) estimates disk from cameras, retention, codec, resolution, and FPS.</p>https://securetechie.com/tools/vm-calculator/Mon, 01 Jan 0001 00:00:00 +0000https://securetechie.com/tools/vm-calculator/<h2 id="free-vm-and-host-sizing-calculator">Free VM and host sizing calculator</h2> <p><strong>Here is the short version:</strong> host count is the larger of CPU demand and memory demand, then add a spare host. This <strong>VM calculator</strong> estimates N, N+1, and HA-adjusted cluster size from workload rows plus host sockets, cores, RAM, overcommit, and allocation caps.</p>https://securetechie.com/tools/subnet-calculator/Mon, 01 Jan 0001 00:00:00 +0000https://securetechie.com/tools/subnet-calculator/<h2 id="free-ipv4-subnet-calculator-cidr">Free IPv4 subnet calculator (CIDR)</h2> <p><strong>Here is the short version:</strong> a prefix of n bits is the network. The rest are hosts. This <strong>subnet calculator</strong> turns an IPv4 address and CIDR prefix into network, broadcast, mask, wildcard, usable range, and host count, plus an optional VLSM split.</p>https://securetechie.com/tools/password-generator/Mon, 01 Jan 0001 00:00:00 +0000https://securetechie.com/tools/password-generator/<h2 id="free-password-strength-checker-and-secure-password-generator">Free password strength checker and secure password generator</h2> <p><strong>Here is the short version:</strong> a unique 16+ character secret plus MFA beats a clever short password every time. This <strong>password strength checker</strong> and <strong>secure password generator</strong> estimates entropy, flags common patterns, and can mint random passwords or passphrases in your browser. Secrets are not uploaded to Secure Techies.</p>https://securetechie.com/tools/ransomware-cost-calculator/Mon, 01 Jan 0001 00:00:00 +0000https://securetechie.com/tools/ransomware-cost-calculator/<h2 id="free-ransomware-and-data-breach-cost-calculator">Free ransomware and data breach cost calculator</h2> <p><strong>Here is the short version:</strong> for most small firms the ransom is not the bill. Downtime, rebuild labor, and record-response costs usually dwarf it. This <strong>ransomware cost calculator</strong> turns revenue, staff, records, downtime, recovery days, and readiness into low, mid, and high ranges plus an optional annualized loss.</p>https://securetechie.com/tools/email-header-analyzer/Sat, 15 Aug 2026 00:00:00 -0700https://securetechie.com/tools/email-header-analyzer/<h2 id="free-email-header-analyzer-for-spf-dkim-and-spoof-checks">Free email header analyzer for SPF, DKIM, and spoof checks</h2> <p>An <strong>email header analyzer</strong> makes the hidden part of a message readable. Paste the raw headers from Outlook, Gmail, or Microsoft 365. This tool highlights <strong>SPF</strong>, <strong>DKIM</strong>, and <strong>DMARC</strong> results, compares <strong>From</strong>, <strong>Return-Path</strong>, and <strong>Reply-To</strong>, and lists the <strong>Received</strong> path from the newest hop to the oldest.</p>https://securetechie.com/tools/spf-dmarc-generator/Sat, 15 Aug 2026 00:00:00 -0700https://securetechie.com/tools/spf-dmarc-generator/<h2 id="free-spf-and-dmarc-record-generator">Free SPF and DMARC record generator</h2> <p>This <strong>SPF record generator</strong> and <strong>DMARC record generator</strong> builds the TXT records you publish in DNS. Enter the domain people see in From, list includes and IPs, pick an <code>all</code> policy, and set a DMARC policy plus a report mailbox. The tool counts SPF mechanisms that use DNS and warns before you blow the <strong>10-lookup</strong> limit.</p>https://securetechie.com/tools/cybersecurity-risk-assessment/Sat, 15 Aug 2026 00:00:00 -0700https://securetechie.com/tools/cybersecurity-risk-assessment/<h2 id="free-cybersecurity-risk-assessment-for-small-businesses">Free cybersecurity risk assessment for small businesses</h2> <p>This <strong>cybersecurity risk assessment</strong> is a 10-question score for MFA, backups, EDR, email authentication, patching, training, privilege, incident response, inventory, and offboarding. It is built for owners and office managers who need a ranked list, not a 40-page binder.</p>https://securetechie.com/tools/bandwidth-calculator/Sat, 15 Aug 2026 00:00:00 -0700https://securetechie.com/tools/bandwidth-calculator/<h2 id="free-office-bandwidth-calculator">Free office bandwidth calculator</h2> <p><strong>Here is the short version:</strong> size the busy hour, not the brochure. Add concurrent video, voice, cloud work, cameras, and backup, then add headroom. This <strong>office bandwidth calculator</strong> estimates download and upload separately and names the next common business circuit.</p>https://securetechie.com/tools/downtime-cost-calculator/Sat, 15 Aug 2026 00:00:00 -0700https://securetechie.com/tools/downtime-cost-calculator/<h2 id="free-it-downtime-cost-calculator">Free IT downtime cost calculator</h2> <p><strong>Here is the short version:</strong> an outage costs lost revenue plus idle people plus the labor to recover. This <strong>IT downtime cost calculator</strong> turns annual revenue, operating hours, blocked staff, and recovery work into a total and an hourly rate for any unplanned (or planned) IT failure.</p>https://securetechie.com/tools/phishing-email-checker/Sun, 16 Aug 2026 00:00:00 -0700https://securetechie.com/tools/phishing-email-checker/<h2 id="free-phishing-email-checker-for-invoice-and-login-scams">Free phishing email checker for invoice and login scams</h2> <p><strong>Here is the short version:</strong> if a message asks you to change a payment, send a gift card, or type a password, stop. This <strong>phishing email checker</strong> reads From, subject, and body in your browser and lists red flags. It does not visit links and it does not open attachments.</p>https://securetechie.com/tools/employee-offboarding-checklist/Sun, 16 Aug 2026 00:00:00 -0700https://securetechie.com/tools/employee-offboarding-checklist/<h2 id="free-employee-offboarding-checklist-for-microsoft-365">Free employee offboarding checklist for Microsoft 365</h2> <p><strong>Here is the short version:</strong> on the last day, block sign-in, revoke sessions, reset the password, and read inbox rules before you touch the mailbox. This <strong>employee offboarding checklist</strong> tracks those steps in your browser. It does not log into Entra ID.</p>https://securetechie.com/tools/sha256-file-checksum/Sun, 16 Aug 2026 00:00:00 -0700https://securetechie.com/tools/sha256-file-checksum/<h2 id="free-sha-256-file-checksum-tool">Free SHA-256 file checksum tool</h2> <p><strong>Here is the short version:</strong> hash the file you downloaded and compare it to the hex the vendor published. If they differ, do not run the installer. This <strong>SHA-256 file checksum</strong> tool does that in your browser. The file is not uploaded.</p>https://securetechie.com/tools/backup-retention-calculator/Sun, 16 Aug 2026 00:00:00 -0700https://securetechie.com/tools/backup-retention-calculator/<h2 id="free-backup-retention-calculator-for-3-2-1-storage">Free backup retention calculator for 3-2-1 storage</h2> <p><strong>Here is the short version:</strong> backup storage is not &ldquo;the same size as the server.&rdquo; It is source data, times how often it changes, times how long you keep points, times how many backup copies you store. This <strong>backup retention calculator</strong> turns that into terabytes in your browser.</p>https://securetechie.com/tools/azure-cost-calculator/Mon, 17 Aug 2026 00:00:00 -0700https://securetechie.com/tools/azure-cost-calculator/<h2 id="free-azure-cost-calculator">Free Azure cost calculator</h2> <p><strong>Here is the short version:</strong> Azure bills compute by the hour, disks by the month, and egress after a free band. This <strong>Azure cost calculator</strong> multiplies published East US list rates (August 2026) by your VM count, hours, disks, blob, and outbound GB so a two-server office stack has a number you can argue with.</p>https://securetechie.com/tools/aws-cost-calculator/Sun, 16 Aug 2026 00:00:00 -0700https://securetechie.com/tools/aws-cost-calculator/<h2 id="free-aws-cost-calculator">Free AWS cost calculator</h2> <p><strong>Here is the short version:</strong> AWS bills EC2 by the hour, EBS and S3 by the GB-month, and internet egress after a free band. This <strong>AWS cost calculator</strong> multiplies published us-east-1 list rates (August 2026) by your instance count, hours, disks, object storage, and outbound GB so a two-server office stack has a number you can argue with.</p>https://securetechie.com/tools/microsoft-end-of-support/Sun, 06 Sep 2026 00:00:00 -0700https://securetechie.com/tools/microsoft-end-of-support/<h2 id="microsoft-end-of-support-lookup">Microsoft end of support lookup</h2> <p><strong>Here is the short version:</strong> Microsoft publishes a date. After that date, free patches stop. This <strong>Microsoft end of support lookup</strong> is a browser table of the Windows, Server, Office, SQL, Exchange, and SharePoint versions Southern California offices still run. Search a name. Read the countdown. Then confirm the row on <a href="https://learn.microsoft.com/en-us/lifecycle/products/" target="_blank" rel="noopener">Microsoft Learn lifecycle</a>.</p>https://securetechie.com/tools/wifi-qr-code-generator/Sun, 06 Sep 2026 00:00:00 -0700https://securetechie.com/tools/wifi-qr-code-generator/<h2 id="free-wi-fi-qr-code-generator">Free Wi-Fi QR code generator</h2> <p><strong>Here is the short version:</strong> a <strong>Wi-Fi QR code generator</strong> turns a guest SSID and password into a picture a phone can scan. This one runs in the browser. The password never leaves the tab. Print it for the guest network. Do not encode the staff SSID and tape it to the espresso machine.</p>https://securetechie.com/tools/sla-uptime-calculator/Sun, 06 Sep 2026 00:00:00 -0700https://securetechie.com/tools/sla-uptime-calculator/<h2 id="sla-uptime-calculator">SLA uptime calculator</h2> <p><strong>Here is the short version:</strong> 99.9% sounds like almost always. It allows <strong>43 minutes 12 seconds</strong> of downtime in a 30-day month. This <strong>SLA uptime calculator</strong> turns any percent into day, week, month, and year allowances, then checks how much of this month&rsquo;s budget you already spent.</p>