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VERDICT

Should I use Omnicalculator?

Your life in - omnicalculator.com

Worth it. Use it: it is free, broad, and good for quick one-off calculations, including niche cases. Skip it if you need audited financial models, offline tools, or enterprise support — and verify builder pricing before depending on it.

Confidence

Medium. Based on ~30 public sources; most 'reviews' are thin aggregator comparison pages, so confidence is medium.

Ratings

  • Value for money
  • Ease of use
  • Feature depth
  • Support qualityNo support data in sources reviewed
  • Security posture

Pricing

$0

Free

ModelNot disclosed
Monthly feesNot disclosed
HardwareNot disclosed
Free tierYes
Paid (Pro/Builder)Not published in sources reviewed

Best for

  • Quick one-off calculations
  • Students and hobbyists
  • Marketers doing fast ROI/CLTV math
  • Sites wanting an embeddable calculator

Not for

  • Regulated financial modeling needing audit trails
  • Teams wanting spreadsheet-grade custom logic
  • Buyers expecting enterprise support or SLAs
  • Offline-first users

Gotchas - check before you buy

medium

Builder/Pro pricing tiers exist but public details are sparse — confirm costs before committing

medium

Domain appears in infostealer credential logs — some users' devices were compromised; use unique passwords

low

Viral 'your first pet' style quiz posts route through Omni calculators; share personal answers cautiously

low

Formal review volume is tiny; support quality is unproven

Pros and cons

Pros

  • Free access to a very broad calculator library
  • Covers niche cases: TV height, drive space, BMR, price-per-ounce
  • Calculator builder lets sites embed custom calculators
  • Third-party safety scans report the site clean
  • Organically recommended in Reddit threads across many topics

Cons

  • Only 4 Trustpilot reviews — formal feedback nearly nonexistent
  • Paid builder pricing details unclear in public sources
  • Review ecosystem dominated by thin aggregator comparison pages
  • Web-only; browser and internet required

Sources & method

Analyzed 10/05/2026 - 15 sources - No known vulnerabilities found in the sources reviewed. Third-party scans report the site safe; user credentials for the domain appear in infostealer logs (user-side risk, not a platform breach).

official x3review x6security x4news x2
  • Credentials appear in infostealer dumps, HudsonRock lists among domains with stolen credentials — indicates compromised users' devices, not a breach of Omni itself.

Key stats

  • Value for money: 5/5

    Rating

  • $0

    Starting price

  • 15

    Sources

  • Analyzed

  • Value for money: 5/5. Core calculators free; paid tiers optional
  • Ease of use: 4/5. Reddit novices self-serve niche problems easily
  • Feature depth: 5/5. Broad library; covers many niche cases
  • Support quality. No support data in sources reviewed
  • Security posture: 4/5. Clean third-party scans; no known vulnerabilities
  • $0 Starting price Core calculator library is free
  • Yes Free tier Paid builder/Pro plans exist
  • 4 Trustpilot reviews Very small formal review sample

Pricing

Free

$0

  • Full calculator library
  • Browser-based, no install

Paid (Pro/Builder)

Not published in sources reviewed

  • Custom calculator builder
  • Account-based access

Security

No known vulnerabilities found in the sources reviewed.

  • Credentials appear in infostealer dumpsHudsonRock lists among domains with stolen credentials — indicates compromised users' devices, not a breach of Omni itself.⁷

Third-party scans report the site safe; user credentials for the domain appear in infostealer logs (user-side risk, not a platform breach).

What users say

Casual Reddit users reach for Omni for niche calculations across finance, health, and tech; formal review volume is nearly nonexistent.

“[TOMT] Website where you can calculate anything in any ...”
Reddit, r/tipofmytongue
“OMNI Calculator - TV Mounting Height”
Reddit, r/4kTV

Alternatives

Compare Omnicalculator with each alternative.

  • calculator.net

    Free ad-supported calculator site with similar breadth

    Omnicalculator vs calculator.net

  • Google Sheets / Excel

    Better for reusable, auditable, custom formulas

  • Built-in phone calculator

    Fine for everyday arithmetic, no browser needed

Companies that use it

  • Securitas Security Services USA (EAP resource for employees)14
  • Visual Matrix (hotel PMS; help docs link Omni calculators)15
Full analysis

Based on ~30 public sources; most 'reviews' are thin aggregator comparison pages, so confidence is medium.

Free, huge calculator library great for quick answers; thin reviews, unclear builder pricing. Use casually, don't build a business on it.

Methodology

Based on ~30 public sources; most 'reviews' are thin aggregator comparison pages, so confidence is medium.

Sources

  1. Omni Calculator Review (2026): Pricing, Pros & Consitechguides.com
    review
  2. Read Customer Service Reviews of omnicalculator.comtrustpilot.com
    review
  3. OMNI Calculator - TV Mounting Heightreddit.com
    review
  4. [TOMT] Website where you can calculate anythingreddit.com
    review
  5. LPT: Don't answer those social media postsreddit.com
    review
  6. Omni Calculator VS SimpleCalcsaashub.com
    review
  7. Infostealer Credentials for omnicalculator.comhudsonrock.com
    security
  8. Is omnicalculator.com Safe? Security Scan Reportscanner.pcrisk.com
    security
  9. Omnicalculator.com Website Reviewgridinsoft.com
    security
  10. omnicalculator.com Reviews — scam, legit or safe checkscamadviser.com
    security
  11. Omni Calculator homepageomnicalculator.com
    official
  12. Terms and Conditions — Account & Calculator Builderomnicalculator.com
    official
  13. Product security pageomnicalculator.com
    official
  14. Securitas EAP references Omni Calculatoranthemeap.com
    news
  15. Visual Matrix help docs reference Omni calculatorhelp.visualmatrix.com
    news

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