Prayer Drain Calculator
Pick your prayers. See how long they last and what your trip needs.
Example trip
Bring 11 Prayer potion(4).
11 Prayer potion(4)
Full bar: 2 min · 42 doses for 30 min
Loading GE price…
80 
A full prayer lasts 2 min
A full prayer lasts 2 mina dose lasts 41 s
On: Protect from Magic and Piety.
Also: Max cape or ring of the gods (i). Prayer potion details
Quick setups
Not counted: prayer flicking and monster prayer drain.
How this is worked out
- Each prayer's drain effect comes from the OSRS Wiki Prayer article (revision 15378606) and the game cache. Protection prayers, Chivalry, Eagle Eye, Mystic Might, Deadeye and Mystic Vigour are 12. Piety, Rigour and Augury are 24. Zeal is 24, the same as Piety.
- Drain resistance is 60 + 2 × your prayer bonus. One point drains every 0.6 × resistance ÷ total drain effect seconds.
- You start with as many prayer points as your Prayer level.
- Prayer potion: 7 + a quarter of your Prayer level per dose. Super restore: 8 + a quarter. With a holy wrench, Prayer cape, Max cape or ring of the gods (i): 27% instead of a quarter. They do not stack. Rounded down, and never more than your level.
- Doses: the points the trip drains, minus the points you start with, divided by one dose. The plan drinks only when a full dose fits. Potions are 4-dose potions.
- Zeal, Deadeye and Mystic Vigour need an unlock this page cannot see, so you say whether you have it. Zeal also needs 75 Attack and 75 Strength.
- Other restores are not counted: altars, special attacks, prayer regeneration potions, moonlight moths and brews. Boosted prayer points are not counted.
- A busy world ticks a little slower, so prayer can last slightly longer.
- Each potion uses its instant-buy GE price and the time of that trade. A price older than 48 hours is not used. No GE tax: you are buying.
- This is not an XP calculator.
About prayer drain
Every prayer you turn on drains your prayer points. Stronger prayers drain faster: Piety, Rigour, Augury and Zeal drain twice as fast as a protection prayer. Your prayer bonus from gear slows all of it down. Your Prayer level does not change the drain rate. It gives you more points to start with, and each potion dose restores more.
What prayer bonus is and which gear gives it: OSRS Prayer Gear & Bonus.
Prayer icons and mechanics: OSRS Wiki, CC BY-NC-SA 3.0.
Prayer drain FAQ
How much longer does prayer last with +15 or +30 prayer bonus?
+15 makes your prayers last 1.5 times as long as +0, and +30 makes them last 2 times as long. Drain resistance is 60 plus 2 for each point of prayer bonus, and each point drains every 0.6 × resistance ÷ total drain seconds.
Does Prayer level change the drain rate?
No. Your Prayer level sets how many points you start with and how much each potion dose restores. The drain rate depends only on the prayers you have on and your prayer bonus.
How fast does Piety drain prayer?
Piety, Rigour, Augury and Zeal have a drain effect of 24. With +0 prayer bonus that is 1 point every 1.5 seconds. With Protect from Melee on as well, it is 1 point every 1 seconds, or 1.5 seconds at +15.
How long does a full prayer last with Protect from Melee?
At level 99 with +0 prayer bonus, 4 min 57 s. With +15, 7 min 26 s. Protect from Melee drains 1 point every 3 seconds at +0.
How many prayer points does a prayer potion or super restore give?
A prayer potion restores 7 plus a quarter of your Prayer level, rounded down: 31 at level 99. A super restore gives 8 plus a quarter: 32 at level 99. A holy wrench, Prayer cape, Max cape or ring of the gods (i) raises the quarter to 27%: 33 and 34 at level 99. They do not stack.
Does Zeal drain prayer faster than Piety?
No. Zeal has a drain effect of 24, the same as Piety, so a trip needs the same number of potions. Zeal needs 84 Prayer, 75 Attack, 75 Strength and the Horn of Bran, and it replaces Piety once unlocked.
Possible reasons for this: our item ID is wrong, osrsbox is down or GE Tracker is down. Report this here.
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