# Division Order Decimal Checker > Free division order decimal calculator: compute your royalty, NPRI or ORRI decimal step by step, compare it with your check stub, and see which input explains a mismatch. Formulas cited. - URL: https://www.buckheadenergy.com/division-order-decimal-calculator - Publisher: Buckhead Energy (https://www.buckheadenergy.com/) - Format: full-content Markdown twin of the page (same content as the HTML; site navigation and footer removed) Breadcrumb: [Home](https://www.buckheadenergy.com/) › [Owner Tools](https://www.buckheadenergy.com/tools) › Division Order Decimal Checker Quick answer — How is a division order decimal calculated? Divide your **net mineral acres** by the **acres in the unit**, then multiply by your **royalty fraction**. Oklahoma’s statute defines a royalty owner’s interest in a unit exactly this way. Forty net acres at a 3/16 royalty in a 640-acre unit is 40 ÷ 640 × 0.1875 = 0.01171875. For a multiunit horizontal well, multiply again by the share of the well allocated to your unit. Enter your numbers below to check the decimal on your check stub. Type of interest Your net acres Unit (spacing) acres Lease royalty NPRI fraction ORRI fraction Allocation to your unit (%) **Is part of your royalty owned by someone else (an NPRI)?** Fixed burden (fraction of production) Floating burden (fraction of your royalty) **Tract participation factor instead of unit acres (unitized fields)** Tract acres Tract participation factor Decimal on your check stub or division order (optional) Check my decimal ## What each input means **Type of interest** Royalty owner (a lessor or pooled owner), fixed NPRI, floating NPRI, or ORRI. **Your net acres** Net mineral acres you own in the unit: gross tract acres times your undivided fraction. For an ORRI, the net lease acres the override covers. **Unit (spacing) acres** Total acres in the spacing, pooled or communitized unit, from the order or unit designation. **Tract acres and tract participation factor** Only for a unitized field that shares production by tract participation factors: the acres in your tract and that tract’s factor from the unit agreement. Leave both blank otherwise. **Lease royalty** The royalty fraction in your lease or pooling election, such as 1/8, 3/16, 0.2 or 25%. **NPRI or ORRI fraction** For an NPRI or ORRI owner, the fraction your deed or assignment states. **Burdens on your royalty** For a royalty owner whose royalty is partly owned by someone else: a fixed burden as a fraction of production, or a floating burden as a fraction of your royalty. **Allocation to your unit** For a multiunit horizontal well, the percentage of the well allocated to your unit in the final multiunit order. 100% otherwise. **Decimal on your check stub or division order** Typed exactly as printed, up to 12 digits after the decimal point. The checker compares at that precision. ## The formula - Royalty owner: (net acres ÷ unit acres) × \[lease royalty × (1 − floating burden) − fixed burden\] × allocation - Fixed NPRI owner: (net acres ÷ unit acres) × NPRI fraction × allocation - Floating NPRI owner: (net acres ÷ unit acres) × NPRI fraction × lease royalty × allocation - ORRI owner: (net lease acres ÷ unit acres) × ORRI fraction × allocation - Unitized field with tract participation: replace (net acres ÷ unit acres) with (net acres ÷ tract acres) × tract participation factor ## How to check a division order decimal 1. **Gather the numbers.** Find your net mineral acres (from your deed, probate or a title opinion), the unit or spacing acres (from the spacing or pooling order, or the unit designation), and your royalty fraction (from your lease or pooling election). 2. **Pick the type of interest.** Choose royalty owner, fixed NPRI, floating NPRI or ORRI. A royalty owner whose royalty is burdened by a non-participating royalty can enter that burden. 3. **Add the allocation for a multiunit well.** If the well is a multiunit horizontal well, enter the percentage of the well allocated to your unit from the final multiunit order. Leave it at 100% otherwise. 4. **Enter the decimal from your check stub.** Type the decimal exactly as printed, with every digit. The checker compares to that precision. 5. **Read the result.** The checker shows each step of the math. If the decimals differ, it lists the single inputs that would reproduce your stated decimal, cleanest first. ## Worked examples from official sources ### Single unit, 3/16 royalty Result: **0.01171875** The Oklahoma Corporation Commission’s royalty-owner booklet works this example as 40 × .1875 ÷ 640 = .011719 (rounded to six places). [Run this example in the tool](https://www.buckheadenergy.com/division-order-decimal-calculator?interestType=royalty&netAcres=40&unitAcres=640&royalty=3%2F16#ot-result) Source: [Basic Information for the Oklahoma Royalty Owner (rev. November 2020)](https://oklahoma.gov/content/dam/ok/en/occ/documents/og/pubasst/Royalty-Owners-Booklet-112020.pdf) — Oklahoma Corporation Commission, Oil and Gas Public Assistance ### Multiunit horizontal well, 43% allocated to your unit Result: **0.00503906** The booklet multiplies the rounded unit decimal .011719 by 43% and prints .00503917. Unrounded, the result is 0.0050390625. The checker reports the booklet’s figure as a rounding difference, not a mismatch. [Run this example in the tool](https://www.buckheadenergy.com/division-order-decimal-calculator?interestType=royalty&netAcres=40&unitAcres=640&royalty=0.1875&allocationPct=43#ot-result) Source: [Basic Information for the Oklahoma Royalty Owner (rev. November 2020)](https://oklahoma.gov/content/dam/ok/en/occ/documents/og/pubasst/Royalty-Owners-Booklet-112020.pdf) — Oklahoma Corporation Commission, Oil and Gas Public Assistance ### Communitized 640-acre section, 20% royalty, 160-acre tract Result: **0.05000000** The Bureau of Indian Affairs handbook’s communitization table computes 160 ÷ 640 = 0.25 × 20% = 0.05 for the NE/4 tract. [Run this example in the tool](https://www.buckheadenergy.com/division-order-decimal-calculator?interestType=royalty&netAcres=160&unitAcres=640&royalty=20%25#ot-result) Source: [Fluid Mineral Estate Procedural Handbook, communitization decimal table (pp. 118–119)](https://www.bia.gov/sites/default/files/dup/assets/public/raca/handbook/pdf/52-IAM-XH_Fluid_Mineral_Estate_Procedural_HB_OIMT.pdf) — U.S. Bureau of Indian Affairs ## Why a decimal can be wrong A decimal is a product of several inputs, so a mismatch usually traces to one of them. The back-solver holds every other input fixed and asks what value of each one alone would reproduce the decimal on your stub. A result that lands on a clean fraction, such as exactly half your acres or a 3/16 royalty, is the first thing to check. Common sources: the payor may credit you with a different share of the acreage than your records show, the unit may not be the size you assumed, your lease royalty may differ from the rate you entered, part of your royalty may belong to someone else under a non-participating royalty (NPRI), or a multiunit well may allocate only part of its production to your unit. ## Decimals and the law In Oklahoma, every payment must show the owner’s interest as a decimal, and revenue decimals must be calculated to at least the sixth decimal place (52 O.S. § 570.12). A division order cannot change your lease: terms that conflict with the lease are invalid unless previously agreed (52 O.S. § 570.11). In Texas, a division order states the fractional or decimal interest claimed by the payee, and it does not amend any lease (Tex. Nat. Res. Code § 91.402(c)). Division orders are terminable by either party on 30 days’ written notice (§ 91.402(g)). In North Dakota, the operator or payor must give the mineral owner a statement of the net mineral acres, the gross mineral acres in the spacing unit and the decimal within 120 days after first sale or a change (N.D. Admin. Code § 43-02-06-01.1). If you disagree over your interest, the developer must furnish a description of the conflict and the proposed resolution, or the part of the title opinion that concerns your interest (N.D.C.C. § 47-16-39.4). ## What explains a mismatch A payor calculates a decimal from the net acres it credits to the owner, the unit acres, the royalty fraction and any burden or allocation factor, and its owner relations department is the office that holds those inputs. The [owner letter templates](https://www.buckheadenergy.com/royalty-owner-letters) include a division order correction request. A division order is compared against the lease it rests on; see [do you have to sign a division order](https://www.buckheadenergy.com/do-i-have-to-sign-a-division-order). An oil and gas attorney can advise on a specific discrepancy. ## Frequently asked questions ### What is a division order decimal? It is your share of the production or proceeds from a well, written as a decimal. In Oklahoma it is the royalty fraction you own in your tract multiplied by the proportion that your tract’s acreage bears to the whole unit (52 O.S. § 87.1(e)). ### How many decimal places should my decimal have? Oklahoma requires revenue decimals to be calculated to at least the sixth decimal place (52 O.S. § 570.12(B)(1)). Enter every digit on your stub so the checker compares at the same precision. ### Why does my decimal not match my own calculation? Usually one input differs: the net acres credited to you, the unit acres, the royalty fraction, a non-participating royalty burden, or a multiunit allocation. The back-solver shows which single input would reproduce your stated decimal. ### How does a multiunit horizontal well change my decimal? Multiply your unit decimal by the allocation factor for your unit. In Oklahoma that factor is the length of the completion interval in your unit divided by the whole completion interval (52 O.S. § 87.8(B)(1)), and the final multiunit order lists it. ### How does the checker treat a fixed or floating NPRI? It treats a fixed NPRI as a fraction of production, so that decimal does not change with the lease royalty, and a floating NPRI as a fraction of the royalty, so it moves with the lease royalty. Which one a deed creates depends on its wording; a title attorney can read yours. ### Does signing a division order change my lease? No, in Texas, Oklahoma and North Dakota. Texas says a division order does not amend any lease (Tex. Nat. Res. Code § 91.402(c)(2)); Oklahoma says conflicting terms are invalid unless previously agreed (52 O.S. § 570.11); North Dakota says a division order that varies the lease is invalid to the extent of the variance (N.D.C.C. § 47-16-39.3). ### Is this legal advice? No. The checker does arithmetic on the numbers you enter. Your title, lease and the payor’s records decide your actual interest. Consult an oil and gas attorney for a title or payment dispute. ## Sources Each source was read on the publisher’s site on 2026-11-02. - [52 O.S. § 87.1(e) — unit interest of a royalty owner](https://www.oscn.net/applications/oscn/DeliverDocument.asp?CiteID=80530) — Oklahoma State Courts Network (OSCN) - [52 O.S. § 87.8(B)(1) — multiunit horizontal well allocation factor](https://www.oscn.net/applications/oscn/DeliverDocument.asp?CiteID=463351) — OSCN - [52 O.S. § 570.11 — division order defined](https://www.oscn.net/applications/oscn/DeliverDocument.asp?CiteID=80939) — OSCN - [52 O.S. § 570.12 — information with each payment; revenue decimals](https://www.oscn.net/applications/oscn/DeliverDocument.asp?CiteID=80940) — OSCN - [Basic Information for the Oklahoma Royalty Owner (rev. November 2020)](https://oklahoma.gov/content/dam/ok/en/occ/documents/og/pubasst/Royalty-Owners-Booklet-112020.pdf) — Oklahoma Corporation Commission, Oil and Gas Public Assistance - [Tex. Nat. Res. Code §§ 91.401–91.402 — division orders and payment of proceeds](https://statutes.capitol.texas.gov/Docs/NR/htm/NR.91.htm) — Texas Legislature, Texas Constitution and Statutes - [N.D.C.C. §§ 47-16-39.3 and 47-16-39.4 — division orders; spacing-unit ownership disputes](https://ndlegis.gov/cencode/t47c16.pdf) — North Dakota Legislative Branch - [N.D. Admin. Code § 43-02-06-01.1 — ownership interest information statement](https://ndlegis.gov/information/acdata/pdf/43-02-06.pdf) — North Dakota Legislative Branch - [Fluid Mineral Estate Procedural Handbook, communitization decimal table (pp. 118–119)](https://www.bia.gov/sites/default/files/dup/assets/public/raca/handbook/pdf/52-IAM-XH_Fluid_Mineral_Estate_Procedural_HB_OIMT.pdf) — U.S. Bureau of Indian Affairs ## Machine access Software and AI assistants can run the same computation with `GET /api/v1/tools/division-order-decimal` (documented in [the OpenAPI spec](https://www.buckheadenergy.com/openapi.json)) or through the MCP tool `check_division_order_decimal` at `/mcp`. Educational arithmetic on the numbers you enter; not legal advice and not a title opinion. Your recorded title, lease, the spacing or pooling order and the payor’s records decide your interest. Consult an oil and gas attorney about a dispute. ## Related guides - [How to read a division order](https://www.buckheadenergy.com/how-to-read-division-order) - [Do you have to sign a division order?](https://www.buckheadenergy.com/do-i-have-to-sign-a-division-order) - [Net mineral acres explained](https://www.buckheadenergy.com/net-mineral-acre-explained) - [Fixed vs. floating NPRI](https://www.buckheadenergy.com/fixed-vs-floating-npri) - [How to read a royalty statement](https://www.buckheadenergy.com/reading-royalty-statement) - [Royalty in suspense](https://www.buckheadenergy.com/royalty-in-suspense) More free owner tools [Oklahoma Pooling Election Calculator](https://www.buckheadenergy.com/oklahoma-pooling-election-calculator) — each option’s cash bonus, royalty decimal and the response deadline in an OCC pooling order [Mineral Rights Offer Checklist](https://www.buckheadenergy.com/mineral-offer-checklist) — which terms an offer letter leaves out, and the questions to ask in writing [Royalty Owner Letter Templates](https://www.buckheadenergy.com/royalty-owner-letters) — division order correction, late payment, owner number, address change and owner’s death letters [Oklahoma Documentary Stamp Decoder](https://www.buckheadenergy.com/oklahoma-documentary-stamp-calculator) — read the consideration range implied by the stamps on a recorded Oklahoma deed [Oil & Gas Royalty Calculator](https://www.buckheadenergy.com/royalty-calculator) — decimal interest and monthly royalty income at live WTI & Henry Hub [Dormant Mineral Deadline Calculator](https://www.buckheadenergy.com/dormant-mineral-deadline-calculator) — when an unused interest can be at risk under a state dormancy statute [Mineral Ownership Flowchart](https://www.buckheadenergy.com/ownership-flowchart) — which public record establishes who owns the minerals [Compare Mineral Rights by State](https://www.buckheadenergy.com/compare-states) — severance tax, dormancy and royalty rules side by side [Find Your Royalty Payor](https://www.buckheadenergy.com/find-your-payor) — the operator behind the company name on your check stub [All owner tools](https://www.buckheadenergy.com/tools) **Sell mineral rights:** https://www.buckheadenergy.com/sell **Operator directory:** https://www.buckheadenergy.com/operators