Tools
Minecraft redstone tick calculator
One game tick is 0.05 s at 20 TPS. One redstone tick is two game ticks, 0.10 s — a community name the wiki still uses for repeater delay. Four redstone ticks are 8 game ticks, 0.40 s. If the server lags below 20 TPS, the real-world seconds will be longer.
Game ticks
8.00
Redstone ticks
4.00
Seconds (20 TPS)
0.40
One repeater set to 2 is 2 redstone ticks (4 game ticks, 0.2 s) on a 20 TPS world. A redstone tick is two game ticks (0.1 s).
The 20 TPS invert
game ticks = redstone ticks × 2
game ticks = seconds × 20
seconds = game ticks ÷ 20
one repeater click = 1 redstone tick = 2 game ticks = 0.1 s
Create contraptions in the pack I play still sit on this tick. Sodium does not speed redstone; that note is on the performance mods page. A farm that needs a rate, not a delay, is the farm rate calculator.
Common questions
How long is a tick in Minecraft?
One game tick is 0.05 seconds, so there are 20 game ticks in a second when the server runs at full speed.
What is a redstone tick?
Two game ticks, or 0.1 seconds. Each setting on a repeater adds one redstone tick of delay.
How much delay does a repeater add?
From 1 to 4 redstone ticks, which is 0.1 to 0.4 seconds. Right-click the repeater to change it.
Why is my redstone slower than it should be?
The server is probably running below 20 ticks per second because of lag, which stretches every delay in real time.
Server tick stalls from a huge farm: Minecraft server hosting.