100calculators.com

About 100Calculators.com - Your One-Stop Solution for All Calculations

100Calculators.com hosts a collection of over 100 free online calculators covering mathematics, finance, health, engineering, and lifestyle topics. The site serves students, professionals, and general users needing quick calculations without installation or signup. The calculators are curated from iCalculator and optimized for speed and ease of use, with each tool including formulas and topic explanations.

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Authority

—/100

Safety

90/100

Registered

Jun 3, 2023

3 years old · IONOS SE

1 of 2 safety checks passed (Sep 19, 2026).

AboutUs has not vetted this site. 1 of 2 automated safety check did not pass. Everything below is what we could measure automatically. Anything you do on the site — paying, sharing personal details, downloading — is between you and the site, not AboutUs.

Current facts

Latest available measurements; dated entries retain their dates. These are measurements, not an endorsement of the site.

Authority & Safety, with the evidence

How this is scored →

Authority: not enough signals yetClear

Why we're not scoring this yet

We withhold an authority number until independent evidence (global rank, link-graph presence) has accrued. The facts we do have about this site are shown below — we'd rather say “not enough signals yet” than invent a low score.

Safety evidence

No unexpired threat-feed result; name-similarity check available (recorded about 31 days ago); 3/3 transport and email checks available (oldest recorded about 31 days ago). This is evidence coverage, not a probability that a website is safe.

Missing DMARC (mild)

Site history

Dated record — historical facts always carry their date.

2023
Domain registered (Jun 3, 2023).
2026
Checked today — 1 of 2 safety checks passed (Sep 19, 2026).

✓ domain continuity 3 years registered✓ live verified Sep 19, 2026

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Correction review promise

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