#calculator

Show HN: Mercury 3 cost calculator (launch promo vs. list pricing)

Estimate your Mercury 3 API bill: compare launch promo ($0.10/$0.35) vs list pricing ($0.20/$0.70) per 1M tokens, with cached-input savings.

Show HN · EN

Show HN: Business days calculator that shows which days it skipped

Count working days between two dates or add business days to a date. Skips weekends and US federal or UK bank holidays. Free, no sign-up.

Show HN · EN

The most impractical calculator in the world only has two buttons

Modern calculators have many buttons, including ones for sine, square root, pi and exponents. But it’s possible just two could suffice

Scientific American · EN