Why one number beats four graphs
Most speed tests hand you four raw metrics and leave the interpretation to you. That is fine for network engineers and useless for everyone else.
The Internet Fitness Score weighs each metric by how much it affects the things people actually do online, then reports a single 0–100 figure alongside per-activity ratings.
How the metrics are weighted
Download speed carries the largest share because it governs streaming and browsing. Upload speed matters more than most people expect: cloud backups, video calls and file sharing all depend on it.
Latency, jitter and packet loss together decide whether a connection feels responsive. A 900 Mbps line with 120 ms ping still feels slow.
Reading your result
Scores above 85 mean every common activity is comfortable. Between 60 and 85 you will notice occasional friction on the most demanding tasks.
Below 60, look at the per-category ratings first, as they tell you whether the bottleneck is bandwidth or stability.