1 m/s = 3.6 km/h. 1 knot = 1.852 km/h. 1 mph = 1.609 km/h.
How it works
Beaufort scale: 0 (calm) to 12 (hurricane force).
When to use this calculator
Reach for this calculator when precision matters more than rough approximation — whether that is for a financial decision, a planning task, or simply getting the right answer the first time.
Common mistakes
A common mistake is misidentifying which formula applies to the specific version of the problem. Many everyday calculations have superficially similar variants that use different formulas — always check which scenario matches your situation.
Real-world scenarios
A freelancer calculates the exact number of working days between a project start and deadline, accounting for weekends and public holidays. The result tells them whether the timeline is achievable before accepting the brief — not after.