RFC Conversion Simulator
The Crystal Laboratory refines Fire Crystals into Refined Fire Crystals: 100 conversions a week in five tiers of 20, each tier costing more FC with better odds, and one half-price conversion per day. Plan the week, then roll the dice.
This week's plan
Pick how many more conversions to do. The plan places your daily half-price conversions where they save the most FC.
Expected RFC
≈ 29
20 conversions
FC cost
330
7 half-price · 11.38 FC per RFC
Fire Crystals on hand
0
short 330 FC
Week after this plan
20 / 100
through Tier 1
| Tier | Conversions | Half price | FC | Expected RFC |
|---|---|---|---|---|
| Tier 1 (20 FC) | 20 | 7 | 330 | ≈ 29 |
Day by day
Day 1
270 FC
T1: 1 half + 13 full
Day 2
10 FC
T1: 1 half
Day 3
10 FC
T1: 1 half
Day 4
10 FC
T1: 1 half
Day 5
10 FC
T1: 1 half
Day 6
10 FC
T1: 1 half
Day 7
10 FC
T1: 1 half
Do the bulk on day 1 (its half-price lands on the cheapest conversion) and keep each remaining day for one half-price conversion at the higher tier — that is the cheapest ordering.
Roll the week
Draws every planned conversion against its tier odds, so you can see how far a real week can swing from the average.
Tier odds
In-game outcome probabilities. FC per RFC is the expected price at full and at half price.
| Tier | Conversions | FC | Outcomes | Expected | FC / RFC |
|---|---|---|---|---|---|
| Tier 1 | 1–20 | 20 | 1 (65%), 2 (25%), 3 (10%) | 1.45 | 13.8 / 6.9 |
| Tier 2 | 21–40 | 50 | 2 (85%), 3 (15%) | 2.15 | 23.3 / 11.6 |
| Tier 3 | 41–60 | 100 | 3 (85%), 4 (12.5%), 5 (2%), 6 (0.5%) | 3.18 | 31.4 / 15.7 |
| Tier 4 | 61–80 | 130 | 3 (75%), 4 (15%), 5 (5%), 6 (3%), 7 (1%), 8 (0.5%), 9 (0.5%) | 3.44 | 37.8 / 18.9 |
| Tier 5 | 81–100 | 160 | 3 (70%), 4 (12%), 5 (9%), 6 (4%), 7 (1.5%), 8 (1%), 9 (1%), 10 (0.5%), 11 (0.5%), 12 (0.5%) | 3.71 | 43.1 / 21.6 |
Strategy
- Tier 1 is the bargain. 20 FC for ≈1.45 RFC is the best rate in the game; Tier 2 already costs 50 FC for ≈2.15. The classic week is 20 conversions for 330 FC (≈29 RFC).
- Spend the half-prices high. A half-price Tier 2 conversion (25 FC for ≈2.15) is cheaper per RFC than a full-price Tier 1 — so finish Tier 1 on day one and use the other six days for one discounted conversion each.
- Pushing deeper is a speed buy. Tiers 3–5 return ≈3.2–3.7 RFC per click but cost 5–6× more FC per RFC. Worth it only when RFC, not FC, is the bottleneck for your next Fire Crystal building level.