Timer on screen: countdown
Data packs
A boss-bar countdown for all playersLearn more
Create a countdown boss bar for all players. At zero, show a title, play a sound, and run your commands. Download a data pack for events and minigames on Minecraft 1.21.9–26.3.
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Timer
Data pack · 1.21.9–26.3Launch (operator rights)
/function timer:startStop
/function timer:stopWhat's inside the archive - 9 files
data/minecraft/tags/function/load.json
The load tag lists functions that run when the world loads and after /reload.
{
"values": [
"timer:load"
]
}
data/timer/function/load.mcfunction
On world load: countdown score.
scoreboard objectives add timer dummy
data/timer/function/finish.mcfunction
By zero: text, sound, and your commands.
title @a title {"text":"Время вышло!","color":"yellow"}
execute as @a at @s run playsound minecraft:block.bell.use master @s ~ ~ ~ 1 1
data/timer/function/main/start.mcfunction
Start a 300-second countdown with a boss bar.
bossbar remove timer:main
bossbar add timer:main {"text":"До старта"}
bossbar set timer:main color yellow
bossbar set timer:main max 300
scoreboard players set #main timer 300
function timer:main/second
data/timer/function/main/second.mcfunction
Update the boss bar and mm:ss label once per second; finish when the timer reaches zero.
execute if score #main timer matches ..0 run return run function timer:main/end
bossbar set timer:main players @a
execute store result bossbar timer:main value run scoreboard players get #main timer
scoreboard players operation #m timer = #main timer
scoreboard players operation #s timer = #main timer
scoreboard players set #60 timer 60
scoreboard players operation #m timer /= #60 timer
scoreboard players operation #s timer %= #60 timer
execute if score #s timer matches 10.. run bossbar set timer:main name ["",{"text":"До старта "},{"score":{"name":"#m","objective":"timer"}},{"text":":"},{"score":{"name":"#s","objective":"timer"}}]
execute if score #s timer matches ..9 run bossbar set timer:main name ["",{"text":"До старта "},{"score":{"name":"#m","objective":"timer"}},{"text":":0"},{"score":{"name":"#s","objective":"timer"}}]
scoreboard players remove #main timer 1
schedule function timer:main/second 1s
data/timer/function/main/end.mcfunction
When time runs out, remove the boss bar and run your end-of-timer actions.
bossbar remove timer:main
function timer:finish
data/timer/function/main/stop.mcfunction
Stop the countdown.
schedule clear timer:main/second
bossbar remove timer:main
data/timer/function/start.mcfunction
/function timer:start — start the timer.
function timer:main/start
data/timer/function/stop.mcfunction
/function timer:stop — stop and remove the timer bar.
function timer:main/stop
How to place
- Download the datapack
Leave the ZIP file as it is: Minecraft can load it without extraction.
- Add it to your world
In single-player mode — saves/<world>/datapacks, on the server — world/datapacks, then /reload.
- Start
/function timer:start — the bar will appear for all players, and for those who join later.
What to know
- A second — by server time. Counting starts schedule … 1s, not a tick counter: /reload will not spawn a second timer next to the first.
- Your commands — commands in the game. Teleport to the arena, give a kit, and open the gates /fill — anything except plugin commands: they don't work in a datapack.
- Restart — with the same startup. Repeating timer:start Starts the countdown over.
Scheduled commands without countdown — Datapack with functions, your boss mob's path — Your own boss.
Frequently asked questions
How to make a timer on screen in Minecraft?
Data pack: enter time and caption, download and place in world. /function timer:start displays a boss bar with countdown for all players.
Can you run a command when a timer ends?
Yes. Add commands to teleport players, give a kit, or open gates with /fill. They run at zero alongside the completion text and sound.
How to stop the timer?
With the command /function timer:stop, the bar disappears. Restarting the timer will begin counting again from the start.
Minecraft custom boss generator