Force 5: Fresh breeze
Wind: 17-21 kts | Sea: Moderate waves
| Force | Desc | Knots | Sea |
|---|---|---|---|
| 0 | Calm | < 1 | Flat |
| 1 | Light air | 1-3 | Ripples |
| 2 | Light breeze | 4-6 | Small wavelets |
| 3 | Gentle breeze | 7-10 | Large wavelets |
| 4 | Moderate breeze | 11-16 | Small waves |
| 5 | Fresh breeze | 17-21 | Moderate waves |
| 6 | Strong breeze | 22-27 | Large waves |
| 7 | Near gale | 28-33 | Sea heaps up |
| 8 | Gale | 34-40 | Moderately high |
| 9 | Strong gale | 41-47 | High waves |
| 10 | Storm | 48-55 | Very high |
| 11 | Violent storm | 56-63 | Exceptionally high |
| 12 | Hurricane | 64+ | Huge waves |
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About Beaufort
Most online tools for this task bury what you need behind ads and forms. Beaufort takes the opposite approach: load the page, do the job, leave. Processing runs locally in your browser using modern Web APIs. Nothing is uploaded, nothing is logged, and there is no quota to worry about for casual use. It is one of about a hundred utility tools that share the same philosophy: do one thing, do it well, get out of your way.
When you'd reach for Beaufort
You're on a public or shared machine and don't want to leave traces of what you're working on.
Travelers, contractors, anyone working from a friend's computer.
Nothing is uploaded, nothing persists if you're not signed in.
You're cleaning up a folder of files that accumulated over a project and need to standardize them.
Designers, writers, and developers wrapping up deliverables.
Drop each file in, copy the output, move on.
You're hitting the daily limit of a paid SaaS and need a backup option for a single quick job.
Marketers and ops people whose primary tool is metered.
Stay productive without burning credits.
You need to handle a one-off task right before a meeting and don't have time to install anything.
Anyone working remotely on a borrowed or restricted machine.
Open the page, get the result, paste it into your doc — under a minute.
Frequently asked about Beaufort
- Is Beaufort really free?
- Yes — Beaufort is free for unlimited personal use, with no account required and no watermark on the output.
- Do I need to create an account to use Beaufort?
- No. Beaufort works without any signup. We only ask for an email if you decide to subscribe to a paid plan.
- Does Beaufort work on mobile?
- Yes, Beaufort is fully responsive and tested on iOS Safari and Android Chrome.
- Will Beaufort change my original file?
- Never. Beaufort only reads your input file and produces a new output file.
- What browsers does Beaufort support?
- Every modern browser released in the last three years: Chrome, Firefox, Safari, Edge, Brave, Opera.