PSIence - Tire pressure calc

Get the right tire pressure for any bike, any discipline. Physics-based. Brand-neutral. Road, gravel, trail, enduro, and downhill — all in one app.

PSIence takes the guesswork out of tire pressure. Whether you're prepping a gravel bike the night before a ride or adjusting at the trailhead, PSIence gives you accurate front and rear pressure recommendations in seconds — for any discipline, any setup.

WHY PSIence? Most pressure calculators cover one or two disciplines, ignore luggage weight, or only work with a specific brand's tires. PSIence covers all five disciplines — road, gravel, trail MTB, enduro, and downhill — with a single brand-neutral tool built on real physics.

HOW IT WORKS Enter your rider weight, bike weight, tire widths, surface type, and tire system. PSIence uses a physics-based algorithm derived from the 15% sidewall drop model to calculate the optimal contact patch for your load — then outputs separate front and rear pressures in both PSI and bar.

FREE FEATURES • Road, gravel, trail MTB, enduro & downhill disciplines • Separate front and rear pressure recommendations • PSI and bar output • Surface type selection (smooth, hardpack, gravel, loose, mud) • Tubeless, tubed, and tubeless + insert support • Save up to 2 bike setups locally — no account needed

PRO — ONE-TIME UNLOCK • Unlimited saved bike profiles • Pack & luggage weight input (the only calculator that accounts for bikepacking gear) • Rim inner width input for precise contact patch calculation • Casing type: lightweight, standard, reinforced (EXO+), DH • Hookless rim safety check with automatic pressure cap • Wet conditions adjustment • Formula trace — see every step of the calculation • Share your setup with your riding group

WORKS OFFLINE Every calculation runs on-device. No internet connection required. Your setups are saved locally — no account, no subscription, no cloud sync required.

PSIence. The science of PSI.