How many dragon bones to 99 Prayer?

From level 1: 181,034 buried, 51,724 on a gilded altar with both burners lit, or 45,259 at the Ectofuntus.

How many frost dragon bones to 99 Prayer?

From level 1: 20,690 on a gilded altar with both burners lit (630 XP each), or 18,104 at the Ectofuntus (720 XP each).

What is the best way to train Prayer as an Ironman?

Offer bones on a gilded altar with both burners lit (350%) or at the Ectofuntus (400%), and scatter ashes from Slayer tasks as you go. The best bones are the ones your combat already produces.

Does the calculator include Prayer XP boosts?

The method multiplier is built in. Other boosts vary from player to player, so add the total you know you have in the extra bonus box.

RSGOALS · RS3

RS3 Ironman Prayer Calculator

Other calculators price Prayer in coins. An Ironman pays in drops, so this one counts how many bones or ashes you need to collect for your target level, by method.

XP per item from the RuneScape Wiki's Prayer skill calculator data, checked against each item page (CC BY-NC-SA 3.0), 28 September 2026.

Current Prayer

Level 1–120Target level13,034,431 XPMethodGilded altar in a player-owned house with both burners lit, the Wilderness chaos altar, or the tier 3 Fort Forinthry chapel altar (350%). The chaos altar is in the Wilderness: Hardcore Ironmen beware.Extra XP bonus % (optional)Any other boost you know you have, e.g. 5 for an outfit

Prayer XP needed

13,034,431

Level 1 → 99

Method multiplier

350%

Gilded altar (both burners) / chaos altar

Dragon bones needed

51,724

The classic benchmark

Free-to-play items only

Bones / ashes	Base XP	XP each	Needed
Searing ashes	200	700	18,621
Reinforced dragon bones	190	665	19,601
Frost dragon bones	180	630	20,690
Dinosaur bones	170	595	21,907
Dragonkin bones	160	560	23,276
Hardened dragon bones	144	504	25,862
Ourg bones	140	490	26,601
Airut bones	132.5	463.75	28,107
Dagannoth bones	125	437.5	29,793
Raurg bones	96	336	38,793
Tortured ashes	90	315	41,380
Fayrg bones	84	294	44,335
Dragon bonesF2P	72	252	51,724
Infernal ashes	62.5	218.75	59,586
Wyvern bones	50	175	74,483
Baby dragon bonesF2P	30	105	124,138
Shaikahan bones	25	87.5	148,965
Zogre bones	22.5	78.75	165,517
Big bonesF2P	15	52.5	248,275
Jogre bones	15	52.5	248,275
Accursed ashesF2P	12.5	43.75	297,930
Bat bonesF2P	5.3	18.55	702,665
Monkey bonesF2P	5	17.5	744,825
BonesF2P	4.5	15.75	827,583
Wolf bonesF2P	4.5	15.75	827,583
Burnt bonesF2P	4.5	15.75	827,583
Impious ashesF2P	4	14	931,031

Frequently asked

How many dragon bones to 99 Prayer?: From level 1: 181,034 buried, 51,724 on a gilded altar with both burners lit, or 45,259 at the Ectofuntus.
How many frost dragon bones to 99 Prayer?: From level 1: 20,690 on a gilded altar with both burners lit (630 XP each), or 18,104 at the Ectofuntus (720 XP each).
What is the best way to train Prayer as an Ironman?: Offer bones on a gilded altar with both burners lit (350%) or at the Ectofuntus (400%), and scatter ashes from Slayer tasks as you go. The best bones are the ones your combat already produces.
Does the calculator include Prayer XP boosts?: The method multiplier is built in. Other boosts vary from player to player, so add the total you know you have in the extra bonus box.

More Ironman tools

XP Calculator →XP between any two levels (to 120, or 150 for Invention), actions needed and time at your XP/hr.Time to Max →XP left to 99 and 120 in every skill, prefilled from the hiscores, with an ETA at your rates.Goal Planner →Set skill targets and share the plan as a link. No account needed.Drop Rate Calculator →Your chance of a 1/X drop after N kills, and the kills for a 50%, 90% or 99% chance.