About RunPace

Our Mission

RunPace provides free, science-based tools to help runners of all levels train smarter and race better. Whether you're preparing for your first 5K or chasing a marathon PR, our tools are designed to support your journey.

What We Offer

RunPace includes 10 purpose-built running tools:

  • Pace Calculator — Convert between min/km, min/mile, and km/h with finish time predictions
  • Race Predictor — Predict race times for 5K, 10K, half marathon, and marathon using VDOT
  • Training Zones — Get personalized easy, tempo, interval, and repetition pace zones
  • Training Plan Generator — Create customized training plans with smart periodization
  • Calorie Calculator — Estimate calories burned based on weight, distance, and pace
  • Running Log — Track runs, view statistics, and monitor personal records
  • Gear Tracker — Track shoe mileage with replacement alerts
  • Weather Guide — Get clothing and pace advice based on real-time weather
  • Course Map — Explore popular running routes with elevation profiles

Science-Based Approach

Our calculations are based on established running science including Jack Daniels' VDOT methodology, Pete Riegel's race time prediction formula, and training principles used by elite coaches worldwide. Every formula is thoroughly tested to ensure accuracy.

Free & Private

All RunPace tools are completely free — no account needed, no premium plans, no hidden fees. Your data stays in your browser via localStorage and is never sent to our servers. We believe great running tools should be accessible to everyone.

Multi-Language Support

RunPace is available in English, 한국어 (Korean), 日本語 (Japanese), 中文 (Chinese), and Español (Spanish). We're committed to making running tools accessible worldwide.

Part of ToolHub

RunPace is part of the ToolHub family of free online tools, which also includes YouTube Toolkit, JSON Formatter, and Compound Interest Calculator. All tools are free, privacy-focused, and designed to be genuinely useful.

Contact Us

Have questions, suggestions, or feedback? We'd love to hear from you.

Email: toolhubmnss@gmail.com