OSRS Prayer Drain Calculator
How fast your prayers drain at your prayer bonus, how long your points last, and what every prayer potion, super restore and brew costs for a trip and an hour.
The best prayer bonus for your budget is on the gear calculator.
Flicking? Set how much of the trip your prayers are on.
Prayers on
Restores for the trip
| Restore | A dose | Doses | Items | Cost | An hour |
|---|
What more prayer bonus buys
The same prayers at other bonuses. Every point of bonus adds 2 to the drain resistance, so +30 doubles how long a point lasts.
| Bonus | A point lasts | Full points last | Points an hour |
|---|
Drain is counted tick by tick. Every 0.6-second tick the active prayers' drain effects are added up, and each time the total passes your drain resistance (60, plus 2 for every point of prayer bonus) a point goes. Nothing drains on the tick a prayer is turned on. Prayer level only sets how many points you have. Restores are counted at the dose the potion gives at your level, drunk before any is wasted; costs are today's instant-buy prices. Rules checked against the OSRS Wiki on 17 October 2026.
Every prayer's drain
Each prayer adds its drain effect every tick it is on. At no prayer bonus a point lasts 0.6 x 60 / effect seconds, so the three big prayers, Piety, Rigour and Augury, cost a point every 1.5 seconds, and a protection prayer one every 3. Effects add up: Protect from Melee with Piety is 36, a point every second.
| Level | Prayer | Effect | A point every |
|---|---|---|---|
| 1 | Thick Skin | 1 | 36s |
| 4 | Burst of Strength | 1 | 36s |
| 7 | Clarity of Thought | 1 | 36s |
| 8 | Sharp Eye | 1 | 36s |
| 9 | Mystic Will | 1 | 36s |
| 10 | Rock Skin | 6 | 6s |
| 13 | Superhuman Strength | 6 | 6s |
| 16 | Improved Reflexes | 6 | 6s |
| 19 | Rapid Restore | 1 | 36s |
| 22 | Rapid Heal | 2 | 18s |
| 25 | Protect Item | 2 | 18s |
| 26 | Hawk Eye | 6 | 6s |
| 27 | Mystic Lore | 6 | 6s |
| 28 | Steel Skin | 12 | 3s |
| 31 | Ultimate Strength | 12 | 3s |
| 34 | Incredible Reflexes | 12 | 3s |
| 37 | Protect from Magic | 12 | 3s |
| 40 | Protect from Missiles | 12 | 3s |
| 43 | Protect from Melee | 12 | 3s |
| 44 | Eagle Eye | 12 | 3s |
| 45 | Mystic Might | 12 | 3s |
| 46 | Retribution | 3 | 12s |
| 49 | Redemption | 6 | 6s |
| 52 | Smite | 18 | 2s |
| 55 | Preserve | 2 | 18s |
| 60 | Chivalry | 12 | 3s |
| 62 | Deadeye | 12 | 3s |
| 63 | Mystic Vigour | 12 | 3s |
| 70 | Piety | 24 | 1.5s |
| 74 | Rigour | 24 | 1.5s |
| 77 | Augury | 24 | 1.5s |
What a dose restores
Prayer potions, super restores and Sanfew serums restore a share of your Prayer level, and a holy wrench, ring of the gods (i) or Prayer cape raises it to 27% (32% for a Sanfew serum). The brews restore a tenth of your level, the moonlight moth and its mix a flat 22, and a prayer regeneration potion 66 over 8 minutes, one point every 12 ticks.
| Restore | 43 | 70 | 99 | 99 with a wrench |
|---|---|---|---|---|
| Prayer potion | 17 | 24 | 31 | 33 |
| Prayer mix | 17 | 24 | 31 | 33 |
| Super restore | 18 | 25 | 32 | 34 |
| Super restore mix | 18 | 25 | 32 | 34 |
| Sanfew serum | 16 | 25 | 33 | 35 |
| Ancient brew | 6 | 9 | 11 | 11 |
| Ancient mix | 6 | 9 | 11 | 11 |
| Forgotten brew | 6 | 9 | 11 | 11 |
| Zamorak brew | 4 | 7 | 9 | 9 |
| Moonlight moth mix | 22 | 22 | 22 | 22 |
| Moonlight moth | 22 | 22 | 22 | 22 |
| Prayer regeneration potion | 66 | 66 | 66 | 66 |
| Blessed crystal scarab | 72 | 72 | 72 | 72 |
The moonlight potion restores the higher of a quarter of your Prayer level plus 7 and 30% of your Herblore level plus 7. A blessed crystal scarab from the Tombs of Amascut restores 72 over 24 seconds, and a prayer enhance in the Chambers of Xeric restores points over about five minutes.
Update history
Every change to this calculator
- Calculator added