TruHearts

See your true HP instead of the approximation in the heart bar. Vanilla MC rounds your health to the nearest half-heart — when you see "9½ hearts," that could mean 19.00, 19.45, or 18.91, and you'd never know.

TruHearts prints the real number, in red, right above your heart bar.

♥ 18.5 / 20

Plus, you get an (optional) recent-damage log of what is actually damaging you and by how much.

What you actually see

• Your current HP as a float, with up to two decimals. Whole values trim cleanly: 20, not 20.00. Single-decimal values trim the trailing zero: 18.5, not 18.50. Two-decimal precision when the value warrants it: 12.34.
• Absorption appears inline in gold when active — ♥ 18.5 / 20 + 8 after an enchanted golden apple, or whatever you've topped up with. Disappears when your absorption runs out.
• Recent-damage log. Stacks the last 5 hits above the HP readout. Each entry shows the exact damage amount (measured as HP + absorption delta, so hits eaten by absorption still count) and a short label for the source — mob name for attacks (Zombie, Skeleton, Warden) or environmental cause (Fall, Fire, Lava, Drowning, Explosion, Void, …). Newest at the bottom; older entries fade out over a 10 s lifetime.
• Toggle it on or off in-game. A keybind under Controls → TruHearts is a master switch that hides everything TruHearts renders. A separate keybind flips just the recent-damage log if you want the HP readout without the log. Both unbound by default; assign whatever keys you like. Preferences stick between sessions.

Why you might want this

• You can see when small damage actually hit you. Fire ticks, magic damage, environmental wear — the heart pips snap to half-hearts and lose the in-between numbers. TruHearts shows you the exact 0.42 your shield just absorbed.
• You can see regen working in real time. Watch HP tick up by the actual 0.5 or 1.0 increments instead of waiting for a pip to flip.
• PVP / hardcore players know what's about to kill them. "One more hit" and "one more half-pip" aren't the same thing.