The cs2 grenade trajectory tools let you see where a throw will go before you commit to it, and trace where it went afterwards. They are practice features. You can only turn them on in a server you control. Used well, they cut the time it takes to learn a new smoke or flash.
This guide explains each command, how to set them up and a short routine for learning throws. For a wider list of practice commands, see our CS2 practice config guide. For how to plan which lineups to learn, see our lineups practice guide.
What commands show the CS2 grenade trajectory?
Two commands do most of the work. Both are listed for CS2 by TotalCS and CSDB.
| Command | What it shows |
|---|---|
sv_grenade_trajectory_prac_pipreview 1 | A small picture-in-picture window showing where the grenade you are holding will land |
sv_grenade_trajectory_prac_trailtime 8 | Keeps the path of each thrown grenade on screen, here for 8 seconds |
sv_rethrow_last_grenade | Throws your last grenade again from the same spot |
Set the preview back to 0 to turn it off. You can change the trail number to keep paths longer or shorter.
How to set it up
- Start a private match on the map you want, with no bots or with bots kicked. Our private match guide explains how.
- Open the console. If you have not enabled it yet, see how to open the console.
- Type
sv_cheats 1. Some practice commands need it. A TradeIt guide from 2026 says the preview window itself can work without cheats on your own server, but turning cheats on avoids surprises. - Enter the preview and trail commands above.
- Add
sv_infinite_ammo 1so you never run out of grenades.
Put the lines in a practice config file so you can load them with one command. Do not put them in your normal autoexec, because they cannot run on official servers anyway.
Reading the preview
Hold a grenade and pull the pin. The preview window shows the landing spot from the grenade's side. Move your crosshair and the spot moves with it. Change throw type to see the difference. Left click is a full throw, right click is a short lob and both buttons give a medium throw. Our grenade throw guide covers each one.
Movement also changes the result. Running or jumping adds speed to the grenade. The preview helps you see this, but practise the real movement too, because it has to be the same every time.
Using trails to fix a throw
After you throw, the trail shows the full arc. Use it when a throw misses. Did it clip a wall, bounce off a ledge or fall short? The trail shows where. Then use sv_rethrow_last_grenade to watch the same throw again from a better spot.
Which CS:GO commands no longer work?
Many older guides list CS:GO commands. CSDB notes that sv_grenade_trajectory and sv_grenade_trajectory_time from CS:GO were removed in CS2. If a guide tells you to use them, it is out of date. Some sites also list cl_grenadepreview for CS2. We could not confirm how it behaves in the current build, so test it yourself before you rely on it.
A simple learning routine
- Pick two or three throws you actually need on one map.
- Use the preview to find the landing spot and a stable standing position.
- Throw it ten times with the preview on.
- Turn the preview off and throw it ten more times.
- Only use it in a match once you land it every time without help.
Exact lineups should come from a lineup tool or video, checked in a private server. The preview is a way to confirm them, not a replacement for practice.
Common mistakes with the preview
- Learning a throw only with the preview on, then missing it in a match.
- Practising from a slightly different spot each time. Use a corner or map edge to line up your feet.
- Forgetting that the round timer and teammates are missing in practice. Check that the throw is still safe to make in a real round.
- Learning dozens of throws at once instead of a few you will use.
Sources and checks
Commands were checked on 2 November 2026 against TotalCS, the CSDB grenade guide and TradeIt's grenade cam guide. Commands can change with updates, so test them after a patch.
Frequently asked questions
Can I use the grenade preview in matchmaking?
No. The trajectory commands only work on a server you control, such as a private match.
Do I need sv_cheats for the trajectory preview?
Some guides say the preview works without it on your own server. Other practice commands need it, so most players turn it on.
Why does sv_grenade_trajectory not work in CS2?
It was a CS:GO command that was removed in CS2. Use the prac_pipreview and prac_trailtime commands instead.
