Free IT tools
IT Tools & Calculators
Browser tools for RAID, CCTV storage, VM sizing, subnets, passwords, ransomware cost, email headers, SPF/DMARC, risk score, bandwidth, downtime, SLA uptime, Wi-Fi QR codes, Microsoft end of support, phishing flags, offboarding, SHA-256 checksums, backup retention, Azure cost, and AWS cost. Built for IT managers and growing businesses. No signup.
- 20Free tools
- 0Signups required
- LiveResults as you type
The toolkit
Pick a tool
Each one runs in the browser and includes a short guide: how it works, assumptions, and the mistakes that waste money.
RAID Calculator
Estimate usable capacity, efficiency, and fault tolerance for common RAID levels.
Open toolSurveillance Storage Calculator
Estimate NVR and archive storage from cameras, resolution, retention, and codec.
Open toolVM & Host Sizing Calculator
Size ESXi-style hosts and clusters from VM workloads, CPU, and memory.
Open toolSubnet Calculator
IPv4 CIDR calculator with usable ranges, wildcard masks, and VLSM split planning.
Open toolPassword Strength Checker & Generator
Check password strength and generate strong random passwords offline in your browser.
Open toolRansomware Cost Calculator
Estimate the business cost of ransomware and data breaches across downtime, recovery, and reputation.
Open toolEmail Header Analyzer
Paste raw headers to see SPF, DKIM, DMARC, spoof flags, and the Received hop path.
Open toolSPF & DMARC Record Generator
Build SPF and DMARC TXT records, count DNS lookups, and copy a safe rollout path.
Open toolCybersecurity Risk Assessment
A 10-question score for MFA, backups, EDR, email authentication, and offboarding. Ranked gaps, no signup.
Open toolOffice Bandwidth Calculator
Size download and upload for video calls, VoIP, Microsoft 365, cameras, and backup.
Open toolIT Downtime Cost Calculator
Estimate lost revenue, idle staff, and recovery labor for any IT outage.
Open toolPhishing Email Checker
Paste a message and see urgency, payment, lookalike-domain, and gift-card red flags.
Open toolEmployee Offboarding Checklist
Same-day Microsoft 365 offboarding: block sign-in, revoke sessions, inbox rules, devices, and leftover SaaS.
Open toolSHA-256 File Checksum
Hash a file in the browser and compare it to a published SHA-256, SHA-1, or SHA-512 digest.
Open toolBackup Retention Calculator
Estimate backup repository size from source data, change rate, GFS retention, and 3-2-1 copies.
Open toolAzure Cost Calculator
Estimate Azure VMs, disks, blob, and egress from published list rates.
Open toolAWS Cost Calculator
Estimate EC2, EBS, S3, and data transfer from published us-east-1 list rates.
Open toolMicrosoft End of Support Lookup
Look up Microsoft end of support dates for Windows, Server, Office, SQL, and Exchange.
Open toolWi-Fi QR Code Generator
Create a guest Wi-Fi QR code in the browser. Password never uploaded.
Open toolSLA Uptime Calculator
Convert 99.9% uptime into real minutes of allowed downtime per month and year.
Open tool
How to use them
Built for real planning, not guesswork
Size hardware, brief a client, or pressure-test a design before you buy. The numbers are estimates. When you need the systems behind them, Secure Techies designs and runs the work.
Need the systems behind the numbers?
We design, secure, and manage IT for Southern California businesses, and support clients nationwide.