Democratizing digital literacy through free, accurate conversion tools since 2020.
OMCalculator was born from a simple but universal frustration. In early 2020, our founder โ a systems architect with two decades of experience โ watched his mother panic over a "missing" 200GB on her new external hard drive. She thought she'd been scammed. The reality? The difference between decimal (SI) and binary (IEC) measurement systems.
That conversation sparked an idea: what if there was a free, easy-to-use resource that explained digital storage clearly? Not another technical document full of jargon, but a genuinely helpful tool that anyone could use โ from students to grandparents to IT professionals.
Within months, OMCalculator launched with a handful of essential converters. Today, we've grown into a comprehensive platform with over 50 converters covering everything from bytes to petabytes, data transfer rates, and binary prefixes. We remain committed to our original mission: accurate technical information should be free and accessible to everyone.
Real people with real expertise behind every converter and article.
Former lead infrastructure engineer at a Fortune 500 tech company. David holds a Master's in Computer Science and has designed storage systems for data centers spanning petabytes.
University professor and network security consultant. Dr. Lopez has taught digital literacy to over 5,000 students and specializes in demystifying technical concepts.
Former senior editor at a leading tech publication. James has reviewed over 500 storage devices and smartphones, bringing real-world testing to our buying guides.
With 12 years in hardware validation at major storage manufacturers, Sarah ensures our performance data reflects actual industry specifications.
Former cloud architect at a top provider, Alex brings expertise in cloud storage, backup strategies, and data security best practices.
University computer science professor who reviews all educational content for accuracy and clarity before publication.
No paywalls, no registration, no email required. Digital literacy should belong to everyone.
Every converter is triple-checked against industry standards. SI and IEC systems supported.
Available in 10 languages with more coming. Storage solutions without borders.
Behind every tool is a real person. Contact us for thoughtful responses.
No data collection, no tracking cookies. Your conversions stay in your browser.
Ad-supported with strict editorial independence. No sponsored content disguised as advice.
Experience: Our team brings over 60 years of combined IT, networking, and engineering experience. We've designed enterprise storage arrays, taught university courses, and written for major tech publications.
Expertise: Every article and converter is reviewed by at least two subject matter experts. We don't outsource content to AI โ our guides are written by professionals who actually understand the material.
Authoritativeness: OMCalculator is cited by educators, IT training programs, and small businesses as a go-to resource for storage conversion. Our tools are used in classrooms from high schools to universities.
Trust: We've been serving users continuously since 2020 with zero security incidents, zero data collection, and 100% uptime for core converters.
Truth: Manufacturers use decimal (1 TB = 1,000,000,000,000 bytes). Operating systems use binary (1 TiB = 1,099,511,627,776 bytes). A 1 TB drive correctly shows about 931 GB.
Truth: Mbps measures Megabits per second, file sizes are in Megabytes (MB). 100 Mbps = 12.5 MB/s. Always divide Mbps by 8 to get real MB/s.
Truth: The safest approach is the 3-2-1 rule: 3 copies, 2 media types, 1 offsite (cloud).
Truth: SSDs fail too โ from controller issues, power surges, or write endurance limits. Always maintain backups.
Truth: File size depends on compression, format (JPEG vs RAW), and image complexity โ not just megapixels.
Yes. We never charge users, and we have no plans to introduce premium tiers.
No. No user accounts, login systems, or data collection. Every converter works instantly.
All converters use double-precision arithmetic and adhere to official SI and IEC standards. Validated against NIST reference values monthly.
Calculations happen locally in your browser โ no data sent to servers. Internet needed for initial page load.
Share our site, whitelist our ads, or contact us about collaboration opportunities.
Not yet, but it's on our roadmap. Contact us for early access.
Have feedback, a converter suggestion, or a storage question? Our team personally reads every message.
Email: support@omcalculator.com
Response time: Usually within 24 hours (weekdays)
Mail: OMCalculator, PO Box 1234, Wilmington, DE 19801, USA
We will never: collect your data, require registration, hide tools behind paywalls, or promote products we don't genuinely believe in.
We will always: provide accurate conversions, explain the "why" behind the numbers, respond to user feedback, and keep digital literacy free for everyone.
Thank you for trusting OMCalculator. โ The entire team
ยฉ 2020-2026 OMCalculator โ 6+ years of trusted service | 50+ converters | 10 languages | 24/7 free access