run-pace

Calculate running pace, time or length by providing the other two.

Interactive demo: https://daghall.github.io/run-pace/

Table of contents

• CLI
  • Installation
  • Usage
  • Examples
• Node module
  • Installation
  • Usage
    • Methods
      • calculateLength
        • Example
      • calculateTime
        • Example
      • calculatePace
        • Example
  • Parameters in detail
    • Time
      • [[dd:][hh:]mm:ss
        • Examples
      • X<d>Y<h>Z<m>W<s>
        • Examples
    • Length
      • X<unit>
      • <constant>
        • Examples
    • Pace
      • <time>/<unit>
    • Imperial
    • Metric
    • Speed
• Tips and tricks
  • Convert kilometer-pace to mile-pace
  • Convert mile-pace to kilometer-pace
  • Convert kilometer-pace to km/h
  • Convert mile-pace to mph

CLI

Run as a command line program.

Installation

npm install -g run-pace

Usage

run-pace -t <time> -l <length> -p <pace> [-i] [-m] [-s]

Two of "time", "length" and "pace" must be provided.
"Speed" is only valid when (only) pace is given or calculated

Parameters:
   -l, --length,    <value><unit> (10km, 10mi, 10000m, hm, ma)
   -p, --pace,      <value>/<unit> (4:30/km, 4m30s/mi)
   -t, --time,      <value> (11:23, 11min23sec, 11m23s)
   -i, --imperial,  force imperial output
   -m, --metric,    force metric output
   -s, --speed,     output speed instead of pace

Examples

run-pace -p 4:50/km -t 1hour
12.41 km

run-pace -p 4:50/km -l 3.5km
16:55

run-pace -p 4:30/km -s -i
8.3 mph

run-pace -l 3 -t 15:00
5:00/km

Node module

Use in a node script.

Installation

npm install run-pace

Usage

const runPace = require("run-pace");

Methods

All methods takes an object as its only argument.

calculateLength

Call with an object with the properties time and length.

Example

const length = runPace.calculateLength({
  time: "45m",
  pace: "4:30/km",
});

console.log(length); // 10km

calculateTime

Call with an object with the properties pace and length.

Example

const time = runPace.calculateTime({
  length: "10km",
  pace: "4:30/km",
});

console.log(time); // 45:00

calculatePace

Call with an object with the properties time and length.

Example

const pace = runPace.calculatePace({
  time: "45m",
  length: "10km",
});

console.log(pace); // 4:30/km

Parameters in detail

Time

Can be provided in the following formats:

[[dd:][hh:]mm:ss

Examples

• 04:40
• 2:44:36
• 0:59
• 0:3599 (non-standard)

X<d>Y<h>Z<m>W<s>

Only one unit needs to be provided.

• <d>is in the format days, day or d
• <h>is in the format hours, hour, hrs or h
• <m>is in the format mins, min or m
• <s>is in the format secs, sec or s

Examples

• 2days13hours45mins16secs
• 3hrs15sec
• 23m16s

---

Length

Defaults to kilometers. If length is provided in miles, imperial output is implicitly enabled, but can be overridden using the metric switch.

If no unit is given, the type is inferred from the metric/imperial flags, and/or the unit given in the pace field.

X<unit>

X is a number, including optional decimal point

<unit> is one of the following:

• Kilometers: km or k
• Meters: m
• Miles: mi
• Blank: defaults to kilometers

<constant>

• Half-marathon: hm
• Marathon: ma

Examples

• hm
• 10k
• 5.25KM(case-insensitive)
• 26.21875mi

---

Pace

Defaults to kilometer pace. If length is provided in miles, imperial output is implicitly enabled, but can be overridden using the metric switch.

<time>/<unit>

<time> as specified above

<unit> is km or mi if explicitly given. Left blank it defaults to km or is inferred from other given parameters

---

Imperial

Default output is kilometers. Use this switch to force output in miles.

---

Metric

If miles are given in pace or length output will be in miles as well. Use this switch to force output in kilometers.

---

Speed

Output speed in instead of pace. Units used are km/h or mph depending on types/options specified.

Only valid if pace is given or calculated.

Tips and tricks

Convert kilometer-pace to mile-pace

run-pace -t 7m15s -l 1mi -m
4:30/km

Convert mile-pace to kilometer-pace

run-pace -t 4:30 -l 1k -i
7:15/mi

Convert kilometer-pace to km/h

run-pace -p 4:55/km -s
12.2 km/h

Convert mile-pace to mph

run-pace -p 4:00/mi -s
15 mph