# Pace Lab: Running Calculator

> Splits, Predictions & Fueling

Canonical page: [https://chrome-stats.com/d/id6759136568](https://chrome-stats.com/d/id6759136568)

## Overview

- **ID:** `id6759136568`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Pyoungoh Yun
- **Category:** Health & Fitness
- **Version:** 1.3.2
- **Last updated:** 2026-04-12
- **First published:** 2026-03-03
- **Size:** 31 MB
- **Data as of:** 2026-09-24
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/pace-lab-running-calculator/id6759136568)
- **Website:** [https://pyoungoh.github.io/pacelab/en/](https://pyoungoh.github.io/pacelab/en/)
- **Privacy policy:** [https://pyoungoh.github.io/pacelab/en/privacy/](https://pyoungoh.github.io/pacelab/en/privacy/)

## Description

From pace calculations to race predictions and fueling strategies, all the tools runners need in one app.

Pace Lab is a running calculator built for runners who want clear numbers without the clutter.

■ Key Features

- Pace calculator
Calculate pace and speed from any distance and time.

- Race pace calculator
Set your goal time and get your target pace — then view full race splits with real clock times across the course.
 
- Pace–speed converter
Switch instantly between pace (min/mi or min/km) and speed (mph or km/h).

- 400m lap calculator
Convert between lap times and equivalent running pace for track sessions.

- Training pace calculator
Enter your goal time and get recommended paces for easy runs, long runs, marathon pace, threshold runs, and interval workouts.

- Heart rate zone calculator
Calculate your 5 training zones using Max HR, Resting HR, or Lactate Threshold (LTHR).

- Race time predictor
Predict finish times across distances using recent race results or VDOT-based estimates.

- Energy gel calculator
Get a personalized gel count and timing plan based on your race distance and goal pace.

No sign-up required — just the tools runners need for smarter training and race planning.

## Rankings

- #1,452,079 — Overall

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- [YourPace](https://chrome-stats.com/d/id6741394319) — 5.00 / 5
- [Pace Calculator](https://chrome-stats.com/d/id502814541) — 4.30 / 5
- [Race & Pace](https://chrome-stats.com/d/id6751363403)
- [RacePace: Running Calculator](https://chrome-stats.com/d/id6782422810)
- [RacePace+](https://chrome-stats.com/d/id6758394154)
- [Run Pace Calculator - PaceCalc](https://chrome-stats.com/d/id6767033287)
- [Real Pace Running Calculator](https://chrome-stats.com/d/id1530164252)
- [Pace Running Calculator](https://chrome-stats.com/d/id6477882768)
- [Run Pace Calculator & Splits](https://chrome-stats.com/d/id6772272238)
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Source: [Chrome-Stats](https://chrome-stats.com/d/id6759136568)