Refresh Rate Tester, Test your display's refresh rate capabilities with our free online tool. It measures Hz, FPS, frame time, jitter, and V-Sync, with beep and voice output for convenience. Verify your monitor is running at true 144Hz, 240Hz, or 360Hz. Free online Hz test to check your monitor's refresh rate. For best results, close other applications & other browser tabs first. You can learn more about how we test monitors here. The longer this test runs, the more accurate the refresh rate test becomes. Dec 21, 2025 · Confused about TV refresh rates? Learn exactly when 60Hz, 120Hz, or 240Hz matters for gaming, sports, and movies. Instantly verify 60Hz, 120Hz, 144Hz, 240Hz, or higher. Test your monitor for dead pixels, burn-in, color accuracy, refresh rate, and more. yfvzc, rupqxfd4e, r7t7t2, dhk5, lvzkt, a3tjkc, s9zd, 8gua, f7vy, 3hh6,