Net mineral acre calculator
Gross tract acres × mineral ownership fraction = estimated net mineral acres
OGML / Free worksheets for landmen
Free worksheets for the numbers in land work.
Net mineral acres, division order decimals, lease bonus, delay rental, shut-in payments, area units, an HBP record screen and runsheet entries, plus tract arithmetic and a record handoff note.
Each one runs on your own numbers in your browser, shows the formula beside the result, and prints. No account, nothing uploaded. We built it and keep it.
The worksheets.
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Division order decimal calculator
Credited net mineral acres ÷ governing unit acres × lease royalty = simplified acreage-based decimal
Lease bonus calculator
Payment-basis acres × stated bonus rate = worksheet bonus amount
Delay rental payment calculator
Payment-basis acres × stated rate × stated periods = worksheet rental amount
Area unit converter
Area amount × selected acres-per-unit factor = acres
HBP record screen
Available records + missing context = a review checklist, not a lease-status determination
Runsheet format reference
Recording reference + parties + description + document effect + open questions = a working record entry
Shut-in payment calculator
Stated payment-basis units × stated rate × stated periods = worksheet payment amount
Tract arithmetic
Apply a stated fraction to stated acreage, with your reference note beside the equation.
Record handoff
Keep available records, missing context and the next question visible for the person reviewing the work.
Own minerals and want answers instead of worksheets? mineral.tools checks a royalty stub, figures mineral acres and sale proceeds, and prepares county data sheets. Need to know where a county keeps its records? landman.wiki has a page for each of 402 counties and parishes in Texas, Louisiana, Oklahoma and New Mexico.
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Describe your role, area of work and what you are trying to organize. We read your inquiry and can reply by email.
Keep confidential client records and private documents out of this first request. These tools do not upload files or open a paid account.