WoW Mythic+ Score Calculator

Which key should I push next?

Load your best runs, then change a dungeon’s level or time. Compare the new total with your starting score before choosing your next key. This plans possible results; it cannot predict whether your group will finish a run.

How to use this WoW M+ calculator to plan your next score gain

Load your character or enter your best runs. Note your starting total, then change one dungeon’s key level or completion time. Compare the new total with the starting value to see the possible rating gain. You can edit the score directly, and use a recent character load to restore your saved starting runs.

How is overall Mythic+ rating calculated?

Your M+ rating combines your best scoring run from each of the eight seasonal dungeons. Another run in the same dungeon only raises your rating if it improves that dungeon’s best score. Edit one row per dungeon here to plan a replacement, not an additional score.

Precision that stays in the calculation

Enter seconds or milliseconds, such as 30:00.437. Run values stay unrounded when added together; the calculator also shows a three-decimal total. More decimal places alone do not prove agreement with every recorded run.

Accuracy check against real Raider.IO runs

This dated convenience sample counts each shared run once. It compares one-decimal public scores, not unrounded three-decimal reference values. Overtime runs are listed but excluded from this timed-run check. Profiles may change after the check; lower key levels are covered by formula tests, not this sample.

Characters

9

Unique runs

116

Timed runs checked

104

Matching scores

104/104

Overtime runs excluded

12

Key levels

+12–+22

Download benchmark inputs and results (JSON)

How the timed-run calculation works

SwiftLight reverse-engineered this timed-run model. Each level above +2 adds 15 points, with additional 15-point steps at +5, +7, +10 and +12. The timer bonus scales with time saved, up to 15 points at 40% under the timer.

155 + 15 × (L − 2) + 15 × [L ≥ 5] + 15 × [L ≥ 7] + 15 × [L ≥ 10] + 15 × [L ≥ 12]

+ min(15, 37.5 × (T − t) / T) · L ≥ 2 · 0 ≤ t ≤ T

SwiftLight · MythicDrake

A reproducible example

For Murder Row’s 34-minute timer, a +10 completed in 30:00.437 gives the value below. Finishing one second faster increases it slightly. These are arithmetic examples from the calculator engine, not an independent Raider.IO benchmark.

+10 · 34:00 · 30:00.437 → 324.403732 → 324.4
+10 · 34:00 · 29:59.437 → 324.422114 → 324.4