Free Tool · Public Data · No Signup
What Are Your Mineral Rights Worth?
Free Royalty Calculator — TX · NM · CA · CO · WY · PA · KS · MT · UT
Find your well by the name or API number on your royalty statement, enter your royalty share, and see an estimated monthly royalty and the remaining value of your interest — computed from official state production records.
Your check stub or division order lists the well (or lease) name and usually an API number — either works here.
How these estimates work & what they can’t tell you
We take the well’s most recent reported production from official state records (Texas RRC, New Mexico OCD, California CalGEM, Colorado ECMC, Montana BOGC, Utah DOGM, Wyoming WOGCC, Pennsylvania DEP & Kansas KGS), price it at indicative flat prices ($2.75/Mcf gas · $68/bbl oil), and multiply by your royalty and share. The remaining-value figure applies your share to the value still left to produce along the well’s fitted decline curve at those prices.
This is an indicative estimate, not an appraisal or an offer. Real royalty checks differ due to actual sales prices, post-production deductions, gas/oil quality, shut-ins, and lease terms. State filings run a few months behind. In Texas, oil is reported at the lease level, so a lease estimate spreads across all its wells. Oklahoma doesn’t publish production publicly — leave your email on an OK well and we’ll run it for you. Mineral buyers commonly pay a multiple of 3–6× annual royalty income for producing interests — the full report covers where in that range an interest like yours might sit.
All data is provided as-is, with no warranty of accuracy, completeness, or timeliness. Kansas records: the source of this material is the Kansas Geological Survey website at http://www.kgs.ku.edu/. All Rights Reserved. KGS does not endorse this site. Nothing here is investment, legal, or tax advice.
Why we built this
We’re ftwsoft — an oil & gas data and analytics shop in Fort Worth. We maintain production records on 2.8 million wells across twelve states for our free well lookup and our work with operators and mineral buyers. Royalty owners kept asking what their checks should look like — so we put the same decline models behind a calculator. If you’re weighing an offer on your minerals, run your well here first.