OSRS Stardust Calculator
Stardust, stars and hours to your Mining goal at shooting stars with your pickaxe, every star size and pickaxe side by side, and the cost of every reward.
Set experience directly to plan past level 99, up to 200M.
Each one doubles the next 300 stardust you mine.
Every pickaxe, side by side
Your level, your ring and your outfit, with each pickaxe.
| Pickaxe | Level | Stardust an hour | XP an hour | A layer | Time |
|---|
Every star size
| Size | Level | Lands at it | Minutes left | To the end | XP |
|---|
Stardust, gems and coins
Rewards you want
Every reward, side by side
Each reward on its own, from no stardust, at your pace. Value is what the contents sell for after the 2% tax.
| Reward | Stardust | Time | Value | Coins a stardust |
|---|
A layer always lasts 7 minutes. Each swing of your pickaxe has the same chance at every star size, so a star gives the same stardust a minute from size 9 down to 1, and every stardust is 32 experience, 16 on a free-to-play world. Rates an hour include finding the next star. From level 60 the rune, dragon and crystal pickaxes use the wiki's stardust an hour, and the gilded, 3rd age and infernal pickaxes swing as fast as one of them. Every other setup is scaled from those figures by how often your pickaxe swings and your chance each swing; below 60 it also allows for stars that reach you already mined down to your size, with about 2½ minutes to find each one. Those are estimates, marked with a ~. Reward and gem values use today's instant-sell prices. Rules and costs checked against the OSRS Wiki on 24 October 2026.
Shooting star sizes and levels
A shooting star crashes on each world about every 90 minutes and always lands at size 6 to 9. Mining a size needs ten times its number in Mining, so a size 9 star needs 90. Each layer lasts 7 minutes while anyone mines it, however many players there are, and then the star drops a size. After size 1 it crumbles. You can start at level 10 on a star that others have mined down to size 1.
| Size | Mining | Lands at this size | Minutes to the end |
|---|---|---|---|
| Size 9 | 90 | 20% | 63 |
| Size 8 | 80 | 25% | 56 |
| Size 7 | 70 | 30% | 49 |
| Size 6 | 60 | 25% | 42 |
| Size 5 | 50 | Never | 35 |
| Size 4 | 40 | Never | 28 |
| Size 3 | 30 | Never | 21 |
| Size 2 | 20 | Never | 14 |
| Size 1 | 10 | Never | 7 |
Experience a stardust
Every stardust is 32 Mining experience at every size, and 16 on a free-to-play world. The whole prospector kit makes it 32.8. The first player to a new star gets double stardust on the next 300 they mine from any star, with no experience for the extra. A charged amulet of glory turns more swings into gems, 1 in 64.2 instead of 1 in 256, and a gem swing gives no stardust. Mining enhancers that double ore do nothing at a star.
Stardust an hour by level
With scouting and the wait at each new size counted, and no celestial ring:
| Mining | Rune | Dragon | Crystal | Dragon XP |
|---|---|---|---|---|
| 60 | 733 | 777 | From 71 | 24,864 |
| 70 | 769 | 814 | 839 | 26,048 |
| 80 | 811 | 858 | 884 | 27,456 |
| 90 | 844 | 893 | 920 | 28,576 |
| 99 | 881 | 933 | 961 | 29,856 |
Pickaxes
Your level sets the chance of stardust on each swing, 29% at level 1 to 46% at 99, and your pickaxe sets how often you swing. A tick is 0.6 seconds.
| Pickaxe | Mining | Swings every |
|---|---|---|
| Bronze pickaxe | 1 | 8 ticks |
| Iron pickaxe | 1 | 7 ticks |
| Steel pickaxe | 6 | 6 ticks |
| Black pickaxe | 11 | 5 ticks |
| Mithril pickaxe | 21 | 5 ticks |
| Adamant pickaxe | 31 | 4 ticks |
| Rune pickaxe | 41 | 3 ticks |
| Gilded pickaxe | 41 | 3 ticks |
| Dragon pickaxe | 61 | 2.83 ticks on average |
| 3rd age pickaxe | 61 | 2.83 ticks on average |
| Infernal pickaxe | 61 | 2.83 ticks on average |
| Crystal pickaxe | 71 | 2.75 ticks on average |
The dragon pickaxe swings every 3 ticks with a 1 in 6 chance of 2, the crystal pickaxe with a 1 in 4 chance. The crystal pickaxe also needs Song of the Elves, and the infernal pickaxe 85 Smithing.
Dusuri's Star Shop
Dusuri stands by the Mining Guild entrance in Falador and sells for stardust only, on members worlds. He buys anything back for 80% of its price.
| Reward | Stardust | What it does |
|---|---|---|
| Celestial ring | 2,000 | An invisible +4 Mining boost, charged or not. Charged, a 1 in 10 chance of an extra ore up to adamantite |
| Star fragment | 3,000 | Recolours one piece of the prospector kit gold, so four for the whole kit |
| Bag full of gems | 300 | 40 noted uncut gems, mostly sapphires and emeralds |
| Soft clay pack | 150 | 100 noted soft clay |
| Celestial signet | 1,000 | Made at a singing bowl from the ring, an elven signet and 100 crystal shards: both rings in one |
| A ring charge | 1 | One charge for each stardust, up to 10,000, given back if you uncharge it |
The first four are the shop's own lines. A bag full of gems holds 40 gems, each a sapphire half the time, an emerald 69 times in 200, a ruby 24, a diamond 6 and a dragonstone 1, with an onyx 1 in 100,000,000. The whole golden prospector kit takes 12,000 stardust.
Shooting star questions
What is the best use of stardust? Buy the celestial ring first. After that, take whichever pack sells for more. At today's prices a soft clay pack brings 63 coins a stardust and a bag full of gems 54.
Is there a star sprite pet? No. Star sprites were planned to appear when a star was mined out and were never added. The pet at the stars is the rock golem, which the pet calculator covers.
What else trains Mining? The Mining calculator compares every rock and method in the game.
Update history
Every change to this calculator
- Calculator added