CalculatePilot

What it is

CalculatePilot is a free library of 167 calculators for finance, health, math, and everyday decisions. Every calculation runs in the browser — no sign-up, no server logging, no paywall.

Why it is different

Most calculator sites hide the math or assume US-only units. CalculatePilot shows the formula behind every result, supports 20 currencies on financial tools, and works in metric and imperial. Add any calculator to a website with one line of HTML. White-label embeds start at $7.99/month.

Key features

• ✓167 free calculators across finance, health, math, and daily life
• ✓Every result includes the formula and methodology
• ✓100% in-browser calculation — inputs never hit a server
• ✓20 currencies plus metric and imperial units
• ✓Embed any calculator with one line of HTML
• ✓Chrome extension and WordPress plugin