Free OSRS Calculators
Drop chance, dry streaks, pet odds, XP goals, combat levels and GP per hour: instant answers with real drop rates, and everything runs in your browser.
Luck & Drops Drop chance, dryness, kill counts and pet odds for every grind.
Enter a drop rate and kill count to see your chance of the drop so far - and in your next kills. Popular boss rates are built in.
OSRS Dry CalculatorHow unlucky are you, really? Compare your dry streak against every other player grinding the same drop.
OSRS Target KC CalculatorSet a confidence level - 50%, 90%, 99% - and see the kill count (and hours) your goal actually takes.
OSRS Pet Chance CalculatorEvery boss pet rate in one place - check your odds so far and how close a few more thousand kills gets you.
Skills, Combat & Money XP goals, combat levels and real profit per hour.
Convert levels to XP, plan a 99, and see how many hours or actions your goal takes at your XP rate.
OSRS Combat Level CalculatorEnter your stats to get your combat level, the formula breakdown, and which single level-up raises it fastest.
OSRS GP/Hour CalculatorLoot minus supplies: see your real GP per hour, per kill and per session before you commit the time.
Why OSRSCalc?
- Real rates, verified. Every preset comes from the official OSRS Wiki, each with the date it was checked (most recently 2026-09-30).
- Private by design. All math runs in your browser. There are no accounts, no ads and no trackers; nothing you type is sent anywhere.
- Math you can check. Every calculator shows its formula and a worked example, so you can see exactly where the number comes from.
- Built for phones. The first input is on screen the moment the page loads; no pop-ups, no walls of text first.
How it works
- Pick a calculator above: drop odds, dryness, pets, XP, combat or profit.
- Choose a preset (boss, unique or pet) or enter your own 1-in-N drop rate.
- Read your result instantly, then copy or share it with your group.
Not sure which tool you need? Start with the drop chance calculator if you're looking ahead, or the dry calculator if you're counting a painful streak.
About OSRSCalc
OSRSCalc is an independent fan site built by one OSRS player who got tired of scattered, slow calculators. It is not affiliated with Jagex. Read more on the about page, or see exactly how every number is calculated in the methodology.