About Ethan
Ethan leads the tools and the guides on Zpeedometer. That means building each tool, from the GPS speedometer to the decibel meter and the light meter, testing it on real phones, and writing the articles on the blog that explain how the readings work and when not to trust them.
The common thread is measurement with the hardware people already carry. A modern phone has a GPS receiver, an accelerometer, a gyroscope, a magnetometer, a microphone and often a light sensor. Browsers can reach most of them, but each one has quirks: GPS speed lags in tunnels, phone microphones are not calibrated sound meters, and compass readings drift near metal. Ethan's work is getting a useful number out of that hardware and being honest about its limits.
What Ethan Works On
- GPS tools: the speedometer and its activity pages, the GPS odometer, altimeter and my location.
- Sensor tools: the compass, bubble level, step counter, decibel meter and light meter.
- Guides: every article on the blog, from how GPS calculates speed to typical speeds for walking, running, cycling and driving.
How Ethan Tests a Tool
No tool goes live on the strength of a desktop demo. Speed readings are compared against vehicle dashboards at steady speeds and checked over measured distances, so the distance total matches reality. Each tool is run on several phones and browsers, including budget Android phones, because sensor hardware varies far more than most people expect. Where a reading has a known weakness, the tool page says so.
Corrections
If something in a tool or an article looks wrong, email contact@zpeedometer.com. Corrections go straight to Ethan, and the page is fixed and updated.
Articles by Ethan
- How Fast Do Race Cars Go?
- Average Sprint Speed: How Fast Can a Person Run?
- Average Speed vs Average Velocity
- Average Speed Formula: How to Calculate It
- Average Speed Calculator: Speed, Distance and Time
- Average Running Speed by Age, Sex and Distance
- Average Plane Speed: How Fast Do Planes Fly?
- Average Jogging Speed: What Counts as Jogging?
- Average Human Speed: Walking, Running and Sprinting
- Average Bike Speed: What Is Normal for Cyclists?
- Pace vs. Speed for Runners: How They Relate and Why It Matters
- Why Motorcycle Speedometers Read Differently Than Car Speedometers
- How Does GPS Calculate Your Speed? A Plain-English Explanation
- GPS Speed vs. Bike Computer: Which One Should Cyclists Trust?
- GPS Speed vs. Car Speedometer: Why They Never Match
- Does GPS Work on Trains? Signal, Tunnels, and Speed Accuracy Explained
- Knots, mph, and km/h: Understanding Boat Speed on the Water
- Average Walking Speed by Age: What's Normal, and How to Measure Yours
- How to Get the Most Accurate GPS Speed Reading on Your Phone