Free UST & Tank Calculators
Eighteen free professional-grade tools for tank operations, compliance, and project planning, built for contractors, facility managers, real estate professionals, and property owners.
Choose a calculator
Oil Tank Removal Cost Calculator
Estimate residential and commercial tank removal costs by state. Includes soil testing and cleanup fund status.
Built for: Property owners, real estate agents, home inspectors, attorneys
Use this calculator →Tank Volume Calculator
Calculate the capacity of any tank by dimensions or preset. Generates dipstick charts and weight estimates.
Built for: Homeowners, facility managers, contractors estimating capacity
Use this calculator →Fuel Weight Calculator
Calculate the weight of diesel, gasoline, jet fuel, heating oil, and 8 other fuels by volume.
Built for: Fuel haulers, fleet operators, fuel system installers
Use this calculator →Tank Strapping Chart Generator
Generate printable inch-to-gallon strapping charts for any tank.
Built for: Gas station operators, fuel facility managers, compliance officers
Use this calculator →Soil Excavation Volume Calculator
Calculate excavation volume, soil weight, trucking loads, and state-specific disposal costs for UST removal projects.
Built for: UST removal contractors, environmental consultants, project estimators
Use this calculator →Cubic Yards to Tons Calculator
Convert soil volume to weight in either direction, with swell factors, truck load counts, tank pit presets, and contaminated soil disposal estimates.
Built for: Excavation contractors, remediation buyers, property owners checking quotes
Use this calculator →Cubic Yard Calculator
Calculate cubic yards of dirt, topsoil, gravel, or fill from area and depth in inches. Multi-area totals, bag counts, and a dig-out mode with truck loads.
Built for: Homeowners, landscapers, excavation estimators
Use this calculator →Cubic Feet to Cubic Yards Converter
Instant bidirectional conversion between cubic feet and cubic yards, with the ÷27 work shown and a quick-reference table.
Built for: Anyone converting volume units for soil, concrete, or dumpsters
Use this calculator →Phase 1 Environmental Site Assessment Cost Calculator
Estimate Phase 1 ESA cost by property type, acreage, state, and turnaround. Includes Phase 2 sampling ranges for tank-history properties.
Built for: Commercial property buyers, real estate investors, lenders, attorneys
Use this calculator →Winter Diesel Gel Calculator
Gel risk verdict for your overnight low, plus kerosene blend gallons and anti-gel additive doses sized to your tank, from a pickup transfer tank to a 10,000 gallon UST.
Built for: Truck and equipment owners, farms, fleets, bulk fuel operators
Use this calculator →Heating Oil Usage Calculator
Days of heating oil remaining and a reorder-by date from your tank size, gauge reading, and the weather. Handles the nonlinear 275 oval gauge correctly.
Built for: Homeowners with oil heat, landlords, fuel dealers
Use this calculator →Fuel Shelf Life Calculator
Verdict on stored diesel, gasoline, B20, kerosene, or heating oil by age, storage, and climate, with remaining useful life and what bad fuel looks like.
Built for: Generator owners, farms, boat owners, anyone storing fuel
Use this calculator →Generator Fuel Calculator
Diesel genset burn rate by kW and load, hours of runtime from your tank, and a sizing verdict against 24 to 96 hour runtime requirements.
Built for: Facility managers, data centers, healthcare, telecom sites
Use this calculator →Water Finding Paste Calculator
Turns a water finding paste reading in inches into gallons of water on the tank bottom, with severity thresholds, for USTs down to 275 ovals.
Built for: Gas station operators, heating oil owners, marinas
Use this calculator →Flowable Fill Calculator
Cubic yards of CLSM to order for a tank closed in place or a trench, with 5% overage and ready-mix truck counts. Covers 275 ovals through 12,000 gallon USTs.
Built for: Closure contractors, ready-mix buyers, owners checking closure quotes
Use this calculator →Well Volume Calculator
One well volume, 3x or 5x purge totals, and 55-gallon IDW drum counts for groundwater sampling events, with multi-well site totals.
Built for: Remediation field techs, environmental consultants, samplers
Use this calculator →Hydraulic Conductivity Calculator
Darcy's law for contaminated groundwater: Darcy velocity, seepage velocity, flow rate, and plume feet-per-year, with K reference values by soil type.
Built for: Environmental engineers, consultants, remediation planners
Use this calculator →PPM Calculator
Matrix-aware concentration converter for lab results: ppm, ppb, percent, mg/L, mg/kg, mg/m3, ppmv, and molarity, with water, soil, and air handled correctly.
Built for: Environmental consultants, field techs, lab clients
Use this calculator →
UST Industry Suppliers
Tanks (UST and AST)
Makers of underground and aboveground storage tanks for fuel, oil and other liquids.
View suppliers →Leak Detection, ATGs and Tank Monitoring
Automatic tank gauges, leak sensors and remote tank level monitors.
View suppliers →Cathodic Protection
Anodes, rectifiers, test equipment and materials that protect steel tanks and piping from corrosion.
View suppliers →Dispensers and Fuel Equipment
Pumps, dispensers, locks, EV chargers and other equipment for fuel sites.
View suppliers →Compliance and Fuel Management Software
Software for tank compliance records, fuel inventory, deliveries and back office work.
View suppliers →Remediation and Closure Products
Cleanup reagents for soil and groundwater, and fill materials used to close tanks in place.
View suppliers →When to use a tank calculator
Tank calculators get pulled into a surprising number of workflows. The most common is real estate due diligence. A buyer or buyer's agent discovers an underground oil tank during inspection, and within a few hours someone needs a removal cost estimate to decide whether to pursue, walk away, or negotiate a credit. The number that comes back from the calculator drives the next 48 hours of negotiation.
Contractors can use these tools for bid preparation. A UST removal contractor estimating a 6,000-gallon commercial tank pull needs three numbers fast. The soil excavation volume in cubic yards drives equipment selection and trucking loads. The projected disposal cost, clean fill versus petroleum-contaminated soil, drives bid contingency. And the removal cost benchmark for that state and tank size drives the labor line. All three come from this section. Fuel haulers can use the weight calculator before dispatch to confirm payload limits. On the Interstate System, federal rules (23 CFR 658.17) cap gross vehicle weight at 80,000 pounds, and the bridge formula can require less. The difference between hauling diesel (about 7.10 lb/gal) and gasoline (about 6.07 lb/gal) is meaningful when you're trying to fill a tanker without going over.
Property owners, especially older homes in the Northeast with legacy heating-oil tanks, can use the cost calculator and volume calculator together. The volume calculator confirms the tank size first. Most basement tanks are the typical 275-gallon residential size or the larger 500-gallon size; the cost calculator estimates removal in the homeowner's state, factoring in whether the state requires soil testing and whether the state operates a residential cleanup fund. For an older home with a buried oil tank, these two numbers together can shape a decision about whether to remove the tank before listing, ask the buyer to handle it, or wait until a leak forces the issue.
Environmental consultants and Phase I/II ESA assessors can use these tools at the scoping stage of property assessments. When a Phase I report identifies a recognized environmental condition (REC) tied to a former or current UST, the consultant needs a preliminary cost band before recommending Phase II investigation or going straight to corrective action. The Oil Tank Removal Cost Calculator and Soil Excavation Volume Calculator together produce a planning band from the calculators' own regional assumptions, which is a starting point for scoping, not a substitute for contractor quotes.
Who built these tools
USTContractors.com is a national directory of UST removal, installation, testing, and remediation contractors across all 50 states. The calculators are free for the same audience: contractors preparing bids, property owners trying to understand what a quote should look like, and real estate professionals who need a number to share with clients.
We deliberately designed each calculator to surface the questions that distinguish a real estimate from a guess. The Oil Tank Removal Cost Calculator asks for state, tank location, and property type. Each input choice has a reason.
How the calculations work
The volume calculations use exact mathematical formulas, not lookup approximations. The horizontal cylinder partial volume (the most common shape for underground gas station tanks) uses the integral V = L × [r² × acos((r-h)/r) − (r-h) × √(2rh − h²)], which gives precise gallons at any dipstick height. Vertical cylindrical, rectangular, and oval-elliptical shapes use their respective exact formulas. Fuel weight calculations use typical densities at the industry-standard 60°F reference temperature. Soil weight for UST excavation uses the Caterpillar Performance Handbook values for common earth: 3,200 pounds per cubic yard in the ground and 2,550 pounds per loose cubic yard.
Cost data, including the oil tank removal cost calculator and the soil disposal cost calculator, uses regional banding. These numbers are useful for bid preparation and budgeting, but they are not contractor quotes. Real-world pricing depends on contamination discovery, accessibility, soil conditions, hauling distance to the nearest permitted facility, contractor availability, and seasonal demand. Every calculator includes an honesty disclaimer below its output that lists what the calculation does and does not account for. For compliance-critical applications, the calculator output should be verified against manufacturer specifications, lab classification reports, and licensed contractor quotes.
Standards and data sources
These calculators reference the standards bodies and federal regulations that govern UST and tank operations: the EPA UST program (40 CFR 280), EPA Statistical Inventory Reconciliation requirements under 40 CFR 280 Subpart D, EPA Resource Conservation and Recovery Act (RCRA) hazardous waste classification under 40 CFR 261, the EPA Hazardous Waste Manifest System (EPA Form 8700-22), API MPMS Chapter 2.2 for tank calibration and strapping, ASTM D975 (diesel fuel oils), ASTM D4814 (automotive spark-ignition engine fuel), ASTM D1655 (aviation turbine fuels), ASTM D6751 (biodiesel B100), ASTM D7467 (biodiesel blends B6-B20), NIST Handbook 44 for weighing and measuring devices, and the FHWA Federal Bridge Formula for truck weight limits. Authority links to each are available on the relevant calculator's page.
State-level data is just as important. Each state operates its own UST program, with its own permitting fees, soil-testing requirements, cleanup-fund eligibility, and real estate disclosure rules. The Oil Tank Removal Cost Calculator and Soil Excavation Volume Calculator both carry data tables covering all 50 states plus the District of Columbia; the soil disposal table groups states into regional price bands. Some states operate a named petroleum cleanup fund: the New Jersey Petroleum Underground Storage Tank Remediation, Upgrade and Closure Fund, the Florida Inland Protection Trust Fund, and the California UST Cleanup Fund are examples.
Privacy and free use
Every formula runs client-side in your browser, and the pages carry the same standard site analytics as the rest of the site. Calculator settings are written into the page address so a result can be shared; on calculator pages, the address sent to site analytics has those settings removed. Calculator history is saved only in your browser's local storage; clearing browser data removes it. All calculators are free for personal use, contractor use, and embedded use on third-party websites with the visible attribution line the embed code includes by default.
Which calculator do I need?
| If you're trying to… | Use this calculator |
|---|---|
| Figure out how big your tank is | Tank Volume Calculator |
| Calculate fuel weight for a delivery | Fuel Weight Calculator |
| Estimate cost to remove an oil tank | Oil Tank Removal Cost Calculator |
| Generate a printable dipstick chart | Tank Strapping Chart Generator |
| Plan excavation and disposal for a UST removal | Soil Excavation Volume Calculator |
| Convert cubic yards of soil to tons, or tons to yards | Cubic Yards to Tons Calculator |
| Budget a Phase 1 ESA for a commercial deal | Phase 1 ESA Cost Calculator |
| Work out how many yards of dirt or topsoil to order | Cubic Yard Calculator |
| Convert cubic feet to cubic yards | Cubic Feet to Cubic Yards Converter |
| Protect diesel from gelling this winter | Winter Diesel Gel Calculator |
| See how long your heating oil will last | Heating Oil Usage Calculator |
| Check whether stored fuel is still good | Fuel Shelf Life Calculator |
| Size a backup generator fuel tank | Generator Fuel Calculator |
| Convert a water paste reading to gallons | Water Finding Paste Calculator |
| Order flowable fill for a tank closure | Flowable Fill Calculator |
| Plan purge volumes for a sampling event | Well Volume Calculator |
| Estimate how fast groundwater moves | Hydraulic Conductivity Calculator |
| Convert lab-report units like ppm and mg/L | PPM Calculator |
| Pre-purchase property due diligence | Phase 1 ESA Cost + Oil Tank Removal Cost |
| Estimate a UST removal job as a contractor | Tank Volume + Soil Excavation + Oil Tank Removal Cost |
Frequently Asked Questions
What calculators do you offer for UST and tank operations?
We offer eighteen free tools across five groups. Tank volume and capacity: the Tank Volume Calculator and the Strapping Chart Generator. Fuel tools: fuel weight, winter diesel gel protection, stored fuel shelf life, generator runtime and tank sizing, heating oil usage, and water finding paste conversion. Cost estimators: oil tank removal cost by state and Phase 1 ESA cost. Earthwork and disposal: soil excavation, cubic yards to tons, cubic yard volume, cubic feet conversion, and flowable fill ordering. Environmental field tools: well purge volumes, hydraulic conductivity, and the ppm concentration converter. Every calculator runs entirely in your browser and generates printable output, and every calculator except the cubic feet converter includes embed code for use on your own site.
Are these calculators free to use?
Yes, all eighteen tools are completely free with no signup, no email gate, and no usage limits. We do not charge for personal use, contractor use, or embedded use on third-party websites. Embedded use requires visible attribution to USTContractors.com (the embed code includes the attribution line automatically).
Can I embed these calculators on my own website?
Yes. Every calculator page except the cubic feet converter has an "Embed this calculator on your site" section that generates a copy-paste iframe snippet. Real estate agents, compliance software vendors, equipment manufacturers, trade publications, and fuel-system contractors are all encouraged to embed. The only requirement is keeping the visible "Powered by USTContractors.com" attribution line that the embed code includes by default. For co-branded implementations, contact info@ustcontractors.com.
Who are these calculators built for?
These calculators serve the same audience that uses our national contractor directory. Property owners can use them for due diligence and oil tank removal cost research. Real estate agents and home inspectors can use them during pre-listing and pre-purchase workflows. Excavation contractors can use the soil and cost calculators for bid preparation. Facility managers can use the tank volume and fuel weight tools for daily operations.
How accurate are the calculations?
Volumetric calculations use exact mathematical formulas (the horizontal cylinder partial volume integral, for example) applied to the dimensions you enter. Cost estimates are rough planning estimates, not quotes. Real prices come from contractors. Each calculator displays an explicit honesty disclaimer below its output explaining what is and is not accounted for. For compliance-critical applications, verify with manufacturer specifications, lab results, and licensed contractors.
Embed these calculators on your site
The calculator pages each have an embed-code generator. Copy the iframe snippet, paste it into any web page, and the calculator runs inside your site with full functionality. Compliance software vendors, real estate brokerages, equipment manufacturers, fuel system contractors, and trade publications are all encouraged to embed. The only requirement is keeping the visible "Powered by USTContractors.com" attribution line that the embed code includes by default. For co-branded implementations, contact info@ustcontractors.com.
Need to hire a contractor?
USTContractors.com is a national directory of UST contractors, oil tank removal specialists, and fuel system installers. Find UST contractors in your state.
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