Education & Reference
CalculatorsPPM
Last updated 2026-08-28 · benchmark measured 2026-08-28 — deterministic & reproducible
Free online calculators for parts per million, concentration, and unit conversion.
Is CalculatorsPPM production-ready?
Legit.Show scores CalculatorsPPM 77 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on CalculatorsPPM (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Performance; its weakest is Security. Every frame it averages is published with its evidence on the Legit.Show listing.
The 7 Frames
- Performance — 98/100
- Accessibility — 95/100
- Security — 30/100
- Privacy — 55/100
- Reliability — 80/100
- Standards — 92/100
- Discoverability — 90/100
What we measured
- Security headers present: CSP.
- No HSTS.
- Served over HTTPS with a valid certificate.
- Real Lighthouse performance run — 315 ms to first byte.
- Returns a proper 404 for unknown routes.
- 1 of 3 sampled routes reachable.
- No privacy policy found.
- Sets cookies / loads scripts with no consent prompt.
Who it's for
Chemists · Lab technicians · Scientists · Students · Engineers
Pricing
Free
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