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ランニングペース計算 — マイル・km スプリット表

min/kmとmin/mileのペースを同時表示し、km・マイル両方のスプリット表を生成。CSVエクスポートでGarminや練習記録に活用。完全オフライン。

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Distance unit

How to use

  1. Choose your distance unit — km or miles — using the toggle at the top.
  2. Enter your run distance (e.g. 10 for 10 km or a half-marathon at 13.1 miles).
  3. Enter your total finish time in MM:SS format, or HH:MM:SS for runs over an hour.
  4. Click Calculate Splits to see your pace in both min/km and min/mile, plus a full split table.
  5. Optionally, click Export CSV to download splits for use in Garmin Connect or any training log spreadsheet.

Pace conversion reference

1 mile = 1.60934 km, so to convert pace: min/km × 1.60934 = min/mile. A 5:00 min/km pace equals 8:03 min/mile. A 6:00 min/km pace equals 9:40 min/mile. The split table below lets you see both simultaneously without manual arithmetic.

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よくある質問

How do I convert pace from min/km to min/mile?
Multiply your min/km pace by 1.60934. For example, 5:00 min/km equals 8:03 min/mile. This calculator shows both units simultaneously so you never need to convert manually.
What is a good running pace for a beginner?
Beginner runners typically run 7–9 min/km (11–14 min/mile). Intermediate runners manage 5–7 min/km (8–11 min/mile). Elite club runners sustain 3:30–5:00 min/km (5:40–8:00 min/mile). Any pace that lets you hold a conversation is healthy for easy runs.
What does even splits mean in running?
Even splits means running every kilometre (or mile) at the same pace. This calculator generates even-split tables — ideal for pacing a race or a structured training run. Many coaches also recommend negative splits, where the second half is slightly faster.
How do I use the CSV export with Garmin?
Click Export CSV to download your split table. Open the file in Excel or Google Sheets to reference target times when programming a structured workout on Garmin Connect or entering manual splits in your GPS watch app.
Is this calculator free and private?
Yes, completely free with no signup. All calculations run in JavaScript inside your browser — nothing is sent to any server.

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