Business & Finance

SellerCalcs

Last updated 2026-09-18 · benchmark measured 2026-09-18 — deterministic & reproducible

Free browser-based calculators for pricing, advertising, shipping, and customs for online sellers.

Are you the maker of SellerCalcs? Claim this listing. It is free, takes a meta tag, a DNS record or GitHub admin rights, and never changes the score.

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To cite this score: legit.show/s/sellercalcs-shop/2026-09-18. That address never changes; this page moves with every re-measure.

Legit.Show scored SellerCalcs 77/100 on 2026-09-18, measured across all 7 frames from its public surface. legit.show/s/sellercalcs-shop/2026-09-18

Is SellerCalcs production-ready?

Legit.Show scores SellerCalcs 77 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on SellerCalcs (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Reliability; its weakest is Privacy. Every frame it averages is published with its evidence on the Legit.Show listing.

The 7 Frames

• Performance — 64/100
• Accessibility — 95/100
• Security — 45/100
  How this compares across the catalogue: The Web Security Baseline
• Privacy — 45/100
  How this compares across the catalogue: The Privacy Gap
• Reliability — 100/100
• Standards — 92/100
• Discoverability — 100/100

What we measured

• Security headers present: X-Content-Type-Options, Referrer-Policy.
• No Content-Security-Policy and no HSTS.
• Served over HTTPS with a valid certificate.
• Real Lighthouse performance run — 187 ms to first byte.
• Returns a proper 404 for unknown routes.
• 3 of 3 sampled routes reachable.
• Has a reachable privacy policy.
• Sets cookies / loads scripts with no consent prompt.

Who it's for

ecommerce sellers · dropshippers · Amazon FBA sellers · Etsy sellers · Shopify merchants

Pricing

Free

Sources and updates

Description

Taken from sellercalcs.shop's own website on 2026-09-18.

Operator

SellerCalcs, as named in sellercalcs.shop's terms, privacy page or footer.

Benchmark

Measured by Legit.Show from the live site, the way any visitor sees it — with no access to its code or accounts. Same method for every product, and no AI decides the score. Last checked 2026-09-18.

Put together from public information, without SellerCalcs's involvement. If anything here is wrong, tell us and a person will check it.

Visit SellerCalcs → · Alternatives to SellerCalcs → · How this was measured →