OSRS ZMI Calculator (Ourania Altar)
Calculate pure or daeyalt essence, Runecraft XP and hours using current Ourania Altar level bands.
Calculate ZMI essence and training time
737,954 XP remaining at 14.59 XP per essence
Current Ourania XP-per-essence table +
| Runecraft level | Pure essence | Daeyalt essence |
|---|---|---|
| 1–9 | 9.39 | 14.09 |
| 10–19 | 10.52 | 15.78 |
| 20–29 | 11.34 | 17.01 |
| 30–39 | 12.27 | 18.41 |
| 40–49 | 12.90 | 19.35 |
| 50–59 | 13.47 | 20.21 |
| 60–69 | 13.63 | 20.45 |
| 70–79 | 14.59 | 21.89 |
| 80–89 | 14.90 | 22.35 |
| 90–98 | 15.35 | 23.03 |
| 99 | 15.58 | 23.37 |
OSRS Wiki — Ourania Altar · reviewed 2026-09-25. Long plans can cross XP-rate bands, so recalculate after entering the next band. Daeyalt experience is 1.5× the pure-essence value.
Old School RuneScape visual reference
Explore visual context for ZMI Calculator. Illustrations are original GamesCalculators artwork unless a separate source is credited.
What the OSRS ZMI Calculator (Ourania Altar) calculates
The OSRS ZMI Calculator plans Ourania Altar training with the current level-band table instead of one generic XP estimate. Choose pure or daeyalt essence, enter exact Runecraft XP, and the tool returns essence required plus an editable time scenario.
ZMI gives 1.7 times the normal rune experience for pure essence. Daeyalt’s 1.5 multiplier stacks with that bonus, so its level-band value is 2.55 times base rune XP.
Use the ZMI Calculator
- 1
Enter the current Runecraft level and exact total XP.
- 2
Choose pure or daeyalt essence and set a target level.
- 3
Replace essence per hour with a measured rate from the intended pouch, teleport and banking setup.
A result you can audit
Each section documents the calculation and the limits that apply to this specific gameplay problem.
How This OSRS ZMI Calculator (Ourania Altar) Works01+
The calculator selects the reviewed XP-per-essence band for the entered Runecraft level. Required essence equals ceiling(exact XP remaining ÷ selected band value), and hours equal required essence divided by essence crafted per hour.
ZMI rune probabilities change in level bands because higher Runecraft levels unlock higher-value rune outcomes. Long targets should be recalculated at the next band so one early rate is not incorrectly applied all the way to 99.
Worked Example for the OSRS ZMI Calculator (Ourania Altar)02+
A level 70 account receives 14.59 XP per pure essence or 21.89 XP per daeyalt essence in the reviewed table. With 145,900 XP remaining, pure essence requires 10,000 essence, while daeyalt requires 6,666 after rounding upward.
How to Use the OSRS ZMI Calculator (Ourania Altar) Result03+
Use required essence to prepare supplies and the hourly output to compare routes. Recalculate at level 80, 90 and 99, where the average XP per essence increases again.
OSRS ZMI Calculator (Ourania Altar) Accuracy and Limitations04+
The result does not simulate individual rune rolls, pouch degradation, colossal-pouch capacity, Ourania Teleport timing, banking rune payment, Raiments output or player pathing. Raiments increase rune output but not Runecraft XP per essence.
Ourania Altar XP per essence
Representative current bands; the calculator contains all level 1–99 rows.
| Runecraft level | Pure essence XP | Daeyalt essence XP |
|---|---|---|
| 1–9 | 9.39 | 14.09 |
| 50–59 | 13.47 | 20.21 |
| 70–79 | 14.59 | 21.89 |
| 90–98 | 15.35 | 23.03 |
| 99 | 15.58 | 23.37 |
Sources used for this page
OSRS calculator FAQs
Clear answers about calculations, data, independence, privacy and practical use.
How much XP per essence does OSRS ZMI give?
It depends on Runecraft level. The reviewed pure-essence table ranges from 9.39 XP at levels 1–9 to 15.58 XP at level 99.
How does daeyalt essence change OSRS ZMI XP?
Daeyalt’s 1.5 multiplier stacks with the Ourania Altar 1.7 multiplier, producing the separate 2.55-times-base column used by the calculator.
Should an OSRS ZMI calculator plan be split by level?
Yes. Recalculate after crossing a listed Runecraft band because the expected rune distribution and XP per essence can increase.
Does the OSRS Ourania Altar estimate include pouch repairs?
Only when the essence-per-hour figure you enter already includes NPC Contact, banking and pouch-maintenance time.
Do Raiments of the Eye increase OSRS ZMI experience?
They increase rune output, but Runecraft XP remains based on essence used, so the XP-per-essence calculation does not add a Raiments multiplier.