Calzivo
Verified Nov 10, 2026 ActiveFree online calculators, converters and generators for everyday tasks, with guides and reusable resources
Just launchedListed on EffectHub ·
About Calzivo
Calzivo offers 114 free online tools across finance, health, text, math and other practical categories. Its calculators cover tasks such as percentages, loan EMIs, ROI, BMI, body fat, age, area and volume, alongside converters, a random number generator and PDF tools. Knowledge articles, step-by-step guides, cheat sheets and worksheets help users understand calculations and reuse what they learn. The site works on smartphones, tablets and desktops, with no account, subscription, credit card or usage limit. Many calculator inputs stay in the browser, and file tools use browser processing where supported. Results use standard formulas where appropriate, while some tools provide estimates based on stated inputs and assumptions.
- Platforms
- Not published
- API
- Not confirmed
- Last verified
- Nov 10, 2026
Is Calzivo legit?
We don’t label tools safe or unsafe. Below are the records we checked ourselves, each with the date we read it.
- Domain registered
- Apr 14, 2026Registry record (RDAP), registrar HOSTINGER operations, UAB, looked up Nov 10, 2026
- TLS certificate
- Issued by Let's Encrypt, valid until Jan 9, 2027Seen in our own connection to the site on Nov 10, 2026
- Last checked
- Nov 10, 2026The site answered
Releases
- InitialLatestNov 10, 2026
Listed on EffectHub.