Golf Handicap Calculator - 無料オンライン電卓
Enter your recent scores with the course rating and slope of each course and get your handicap index.
- 計算式をページに表示
- ブラウザ内で動作
- 入力内容は非公開
Handicap Index
10.0
Rounds used
1 best of 5
Score differentials
| Round | Differential |
|---|---|
| Round 1 | 12.0 |
| Round 2 | 13.4 |
| Round 3 | 10.4 |
| Round 4 | 16.3 |
| Round 5 | 10.0 |
Uses the World Handicap System formula without weather adjustment, soft or hard caps. Your golf association's official index is the one that counts.
一部のコンテンツはまだ英語で表示されます。
Golf Handicap Calculatorとは
Some tasks are specific enough that you'd normally reach for a separate app or browser extension - but really only come up once in a while. The Golf Handicap Calculator is the browser-based version: free, no account needed, works on any device, and the result is there in a few seconds. Nothing you enter is sent anywhere; everything happens on your device.
If the Golf Handicap Calculator is something you use regularly, bookmark it. Most of our utilities continue working offline once the page has loaded, which is handy when you're on a slow connection or need to get something done quickly without waiting for a server. The URL stays stable, so you can share it with anyone who needs the same tool.
Golf Handicap Calculatorの使い方（3ステップ）
Add one round per line: adjusted gross score, course rating, slope rating.
Include up to your last 20 rounds.
Read your Handicap Index.
Golf Handicap Calculatorのしくみ
Each round gets a score differential. Your index is the average of the lowest differentials from your last 20, with the number used depending on how many rounds you have.
Differential = (113 / Slope) x (Adjusted gross score - Course rating)
- 113slope rating of a course of standard difficulty
Golf Handicap Calculatorが結果を出す方法
The Golf Handicap Calculator runs entirely in your browser. There's no upload, no remote server, no analytics on your inputs. For utilities that need fresh data (timezones, weather, currency rates), the calculator fetches from a public API - but only the bare query is sent, nothing about who you are.
Privacy and speed are the two design goals. The Golf Handicap Calculator is statically rendered so the page loads in under a second on most connections, and the actual computation happens on your device - typically in milliseconds. There's no spinner, no "calculating...", no waiting on someone else's server.
Golf Handicap Calculatorを使う場面
- One-off needs that don't justify installing an app or signing up for a service.
- Privacy-sensitive computations where you'd rather not send data to a third-party server.
- Quick checks on a phone or shared computer where installing software isn't an option.
- Teaching or demonstrating - the URL works the same on every device and platform.
よくある間違いと落とし穴
- Assuming a utility tool replaces a security audit. Password generators are good defaults, but truly sensitive accounts need a dedicated password manager.
- Treating output of a generator as a guarantee. Random number generators, dice rollers and similar tools use cryptographically-strong randomness, but you should still verify behaviour for any high-stakes use case.
- Forgetting that browser-side tools are subject to the device they run on. A compromised browser can leak inputs even if the tool itself doesn't transmit them.
- Not bookmarking the page if you'll use the Golf Handicap Calculator regularly - the URL is the cheapest way to find it again.
このツールを使いこなす
- Bookmark the Golf Handicap Calculator page if you use it more than once a week.
- Pair the Golf Handicap Calculator with other utilities on this site - many are designed to work together (e.g., date difference + age calculator, password generator + secure storage tools).
- Most utilities work offline after first load. Useful when you're on a flight or in patchy network conditions.
- Share the URL with anyone who needs the same tool - no install, no signup, just a link.
Golf Handicap Calculatorに関するよくある質問
How many rounds do I need?
At least 3, though more gives a better estimate.
What is slope rating?
How much harder a course plays for a bogey golfer compared with a scratch golfer.
Small tools that save real time
Date math, password generation, QR codes, IP subnets, base64 encoding, dew point, dice rolls, age calculations - none of these are 'big' problems individually, but they are the small frictions that interrupt your day. This tool runs entirely in your browser, has no popup, no chat widget and no tracking inside the calculation, so you can finish the task and move on.
Many tools in the Daily Utilities category complement each other - date difference + day counter + day-of-the-week, or password generator + QR code + base64 encoder. The related-tool grid links them together so you can move between adjacent problems in a click.
The Golf Handicap Calculator is part of the Daily Utilities suite on Online Calculator Tools, alongside 5 related calculators. All tools share the same UI patterns, the same privacy-first rendering (nothing is sent to a server), and the same commitment to showing the formula and assumptions behind every result.