Black Hole Size Comparison: from stellar black holes to TON 618

Black holes, from those left by a single star to the largest known, at the size of their event horizon, side by side at their true relative size, with the Earth, the Sun and the planets' orbits for scale.

• Neutron star: 24 km
• A0620-00: 39 km
• Gaia BH2: 52.6 km
• V404 Cygni: 53.2 km
• Gaia BH1: 56.7 km
• GRS 1915+105: 73.2 km
• Cygnus X-1: 125 km
• Gaia BH3: 193 km
• GW150914: 366 km
• GW190521: 839 km
• GW231123: 1,330 km
• M82 X-1: 2,540 km
• Moon: 3,480 km
• Earth: 12,700 km
• Omega Centauri: 48,400 km
• HLX-1: 118,000 km
• Jupiter: 140,000 km
• Sun: 1.39 million km
• Sagittarius A*: 25.4 million km
• NGC 4258 (M106): 230 million km
• UHZ1: 236 million km
• Earth's orbit: 299 million km
• Centaurus A: 325 million km
• Andromeda (M31*): 827 million km
• 3C 273: 1.54 billion km
• Neptune's orbit: 9 billion km
• M87*: 38.4 billion km
• J0529-4351: 100 billion km
• OJ 287: 106 billion km
• NGC 4889: 124 billion km
• Abell 1201 BCG: 195 billion km
• Cosmic Horseshoe: 213 billion km
• Holmberg 15A: 236 billion km
• TON 618: 240 billion km
• Phoenix A (estimated): 591 billion km