lans.cloud

Free Workout Timers & Gym Calculators

Interval timers with ad-free fullscreen, plate math that matches what is actually on the rack, and fair-minutes math for youth coaches. No accounts, and your training data stays on your device.

Timers Built for Mid-Set, Not Mid-Scroll

A workout timer gets used with shaking hands, sweat on the screen, and thirty seconds of rest to set up the next round. So the tabata timer here leads with what matters at that moment: digits you can read from across the room, color-coded work and rest phases, distinct audio cues for every transition (double-beep into work, a low tone into rest, 3-2-1 ticks), and a fullscreen mode with no ads in it. The schedule is computed drift-free from timestamps, so round 8 ends exactly when it should — including the original 1996 Izumi Tabata 20/10 protocol as a preset.

Calculators That Respect Real Equipment

The warmup sets calculator does the math the plate rack imposes: tell it your working weight, bar, and which plates your gym actually has (tap away the missing ones), and every warmup set comes back rounded down to a weight you can physically load, with the per-side plate breakdown drawn for you. The equal playing time calculator does the same for coaches: it only offers substitution schemes where mathematically equal minutes are possible for your roster size, then rotates the bench round-robin so no kid sits twice before everyone sat once.

No Accounts, Ever

Generated plans from the bodyweight workout generator, your equipment choices, timer presets, and team rosters are saved in your own browser only. Nothing to sign up for, nothing synced to a server, nothing to delete later — which also means the tools load fast and keep working if the gym Wi-Fi drops mid-session.

Frequently Asked Questions

Are these workout timers free, or is there a premium version?

Everything is fully free with no premium tier and no locked features. The regular pages carry clearly separated ads (that is what pays the hosting), but the fullscreen timer modes are always ad-free.

Do the timers show ads while I train?

No — every timer has a one-click fullscreen mode with zero ads, built for propping your phone against a water bottle or casting to a gym TV. What you see mid-workout is only the timer.

Will the interval sounds work with my screen locked or music playing?

The cues are synthesized in the browser and play alongside your music, ducking depends on your device settings. Keep the screen awake during a session — browser timers pause when the phone fully sleeps, so the timers also show huge, glanceable digits to make screen-on training easy.

Do I need an account? Where do my workouts go?

No accounts. Generated workout plans, timer presets, roster names, and plate settings are stored only in your own browser — there is no server that could receive them.

Are the plate and playing-time numbers actually accurate?

Yes, and that is the point of both calculators: warmup sets are rounded down to weights you can physically load from your selected plates (never a theoretical 143.7 lb), and the playing time calculator only offers shift counts where perfectly equal minutes are mathematically possible for your roster.