Runner's Calculator

打字速度，时间和预测计算器亚军。

Calculate pace, speed or time, and predict event performance. Plan training effort and measure performance after your run. Fast and easy to use since a keyboard isn't needed to enter data.

Features:

- Push-button data entry

- Auto-calculation on every change as it is entered

- Pace: time & distance ==> pace & speed

- Time: pace & distance ==> time & speed

- Predict the time to complete a race

- Metric or imperial (English) units

- Persistent data across sessions