Soil Test Analyzer
Upload your Logan Labs, Waypoint, or other soil test PDF and get an instant, grass-specific, plain-English analysis with lawn-size-adjusted product recommendations.
Tool inputs
2 minutesUnderstanding your soil test
Lawn care advice is meaningless without knowing what your soil actually has. Lime, sulfur, potassium, and even some nitrogen recommendations all depend on numbers from a real soil test, not eyeballing the grass. A $25-$50 Logan Labs or Waypoint test pays for itself by telling you exactly what to apply (and what NOT to apply).
Upload your soil test PDF. We support Logan Labs, Waypoint Analytical, and most other US lawn-test labs. The PDF is processed by AI to extract values, then discarded; the original file is never stored.
Tell us your grass type, ZIP code, and lawn size. Your grass type changes everything: pH 5.8 means "lime now" for Kentucky bluegrass but "perfect, do nothing" for centipede. ZIP picks your regional climate, and lawn size lets us do the bag-buying math.
You get a prioritized action plan with specific product recommendations, lawn-size-adjusted amounts, and citations to university extension sources. Premium ($7.99/month) saves the test to your lawn profile and reminds you when it is time to re-test.
- High-priority actions need attention this season. Most commonly pH adjustments (lime or sulfur).
- Medium-priority actions are real but less urgent. Potassium gaps usually fall here.
- Low-priority actions are optional or context-dependent. Phosphorus and organic matter live here.
- Informational items are baseline context. We display micronutrient values but Phase 1 does not issue micronutrient recommendations — they require tissue tests, not soil tests, to confirm.
Before any AI call, the system strips your name, mailing address, and any account numbers printed on the lab report header. Only the soil values reach OpenAI. The original PDF is never stored. We log lab name, parse confidence, and error class for telemetry — we never log the extracted text or PDF contents.
- Recommend nitrogen applications from soil-N readings. Soil nitrogen tests are notoriously unreliable for turf timing. Use the fertilizer calculator for N planning.
- Replace your local county extension office for severe imbalances, sports turf, or commercial properties.
- Recommend chelated micronutrient applications from soil values alone. Iron and manganese deficiencies should be confirmed with tissue tests.
- Process scanned reports printed and re-scanned by mail. Most labs deliver text-based PDFs that parse cleanly; scanned images fall back to manual entry.
Which soil test labs do you support?
Logan Labs and Waypoint Analytical are the primary supported formats. AI extraction also handles many other lab reports automatically. If your report does not parse cleanly, the manual entry form accepts values from any lab including Spectrum Analytic, A&L Eastern, UMass Extension, and university extension labs.
What happens to my PDF after I upload it?
Your PDF is processed by AI to extract values, then discarded. The original file is never stored on our servers. Before any AI call, the system redacts your name, address, and any account numbers printed on the report header so only the soil values reach the model.
Why use this when the lab already sent me a report?
The lab gives you raw values and a generic interpretation aimed at farmers. We translate the values into grass-type-specific recommendations (the same pH means different things for Kentucky bluegrass vs centipede), do the lawn-size math for you, pick specific consumer products, and integrate the result into your 12-month care plan if you save it.
How accurate is the AI analysis?
Every recommendation cites the university extension source it is based on. Lime and sulfur recommendations are capped at conservative single-application rates and split into multiple applications when needed. The system flags low-confidence parses, and the manual entry form is always available if the extraction looks off.
Can I save my soil test results?
Premium ($7.99/month) saves your soil tests to your lawn profile, lets you track changes year over year, and emails you when it is time to re-test. Anonymous users see the full analysis but the result is not persisted beyond the browser session.
What if the PDF will not parse?
If the parse fails (corrupt PDF, scanned image instead of text, or unrecognized lab format), the tool offers manual entry as a fallback. Most US soil test labs deliver text-based PDFs that parse cleanly; scanned reports printed and re-scanned by mail are the most common failure case.
How often should I re-test?
Once every 2-3 years for an established lawn, or annually if you have just made significant amendments (lime, sulfur, compost) and want to verify they worked. If you save your test to a lawn profile, we will email a reminder at the 12 month mark.