1. Set your position
Back flat against the wall, feet shoulder-width and about 60 cm from it. Slide down until thighs are parallel to the floor and knees are at 90 degrees — knees above ankles, never past your toes.
Free online tool
Online wall sit timer.
Slide down the wall, hit start, and hold — the timer tracks your current hold, best time, and progress toward a 30-second to 3-minute target. When static holds become a habit, Plank King gives your plank the same treatment with plans and leaderboards.
How to use it
How to do a proper wall sit.
Ninety degrees at the knees, back flat on the wall, and the clock running.
2. Start the timer and hold
Tap Start as you settle into the hold. Press your lower back into the wall, keep weight on your heels, and breathe steadily — don't hold your breath.
3. Track your progress
The timer keeps your best and last hold for the session. Add 10–15 seconds to your target each week; three holds with a minute of rest between them make a solid session.
Reference
The numbers behind the tool.
Formulas, reference tables, and practical guidance you can come back to.
Average wall sit times by level
Benchmarks assume strict form: thighs parallel, back flat, hands off the thighs. Most people lose 30–50% of their "record" the first time they enforce the parallel-thigh standard.
| Level | Single hold | Session target |
|---|---|---|
| Beginner | 20–45 seconds | 3 holds × 30s, 60s rest |
| Intermediate | 60–90 seconds | 3 holds × 60–75s |
| Advanced | 2–3 minutes | 3 holds × 2 min, or single-leg holds |
Form checkpoints
Four things make or break the hold: knees at 90 degrees stacked over ankles (never past the toes); the whole spine — especially the lower back — pressed into the wall; weight through the heels, not the toes; shoulders relaxed with hands off the thighs. Pushing on your thighs can offload up to a quarter of the work.
Progressions when 3 minutes gets easy
Longer isn't the only harder. Options that scale better than endless seconds: single-leg wall sits (extend one leg straight), adding a weight plate or heavy backpack on your thighs, wall sit marches (lift alternating heels), or dropping to a deeper 80-degree knee angle. Each restarts the clock around 30–60 seconds.
FAQ
Frequently asked questions.
Quick answers about this tool and how to train with it.
How long should I hold a wall sit?
Beginners: build from 20–30 seconds to a full minute. Intermediate: 60–90 seconds. Strong: 2–3 minutes. Quality matters more than seconds — the hold only counts while thighs stay parallel and your back stays on the wall.
What muscles do wall sits work?
Primarily the quadriceps, with strong support from the glutes, hamstrings, and calves, plus core muscles keeping your trunk pressed to the wall. It builds isometric endurance — useful for skiing, hiking, and knee-friendly leg strength.
Are wall sits safe for my knees?
Done correctly — knees at 90 degrees, directly above the ankles — wall sits are low-impact and often used in knee rehab. Sharp pain (not muscle burn) means stop: try a shallower angle first, and see a professional if pain persists.
Wall sit vs plank — which should I do?
Both — they're the same idea for different halves of the body. Wall sits build isometric leg endurance; planks build core endurance. Alternating them (or pairing them in one session) covers your whole trunk and legs with zero equipment.
For site owners
Embed this tool on your website.
One copy-paste gives your readers the full interactive widget — free.
<iframe src="https://www.bigbeefit.com/embed/wall-sit-timer" width="100%" height="560"
style="border:0;border-radius:12px" title="Wall Sit Timer – Free Online Timer with Hold Targets"
loading="lazy"></iframe>
<p>Free <a href="https://www.bigbeefit.com/tools/wall-sit-timer">Wall Sit Timer – Free Online Timer with Hold Targets</a> by BigBeeFit</p>Free for any website — blogs, gyms, coaching sites. Please keep the attribution link so your readers can find the full tool.
Love the burn? Your plank deserves a coach too.
Plank King times your planks, logs your longest holds, builds auto-adjusting plans, and ranks you on Game Center leaderboards — free on the App Store.