Materials & Quantities

Soil Stabilization Lime Content Calculator

Calculate the lime mass needed to stabilize a given volume of soil at a target lime content percentage.

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  • Every formula cited
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Imperial · sales tax
The total volume of soil to be treated with lime.

Measure the volume of the subgrade or embankment layer that will actually be mixed with lime, not the full project footprint if only part of it is stabilized.

The dry density of the soil being stabilized.

Use the in-place or maximum dry density of the specific soil from your geotechnical report — this value scales the mass of soil per unit volume, and directly scales the lime mass required.

The target lime dosage as a percentage of the soil's dry weight.

This percentage should come from a geotechnical lab mix-design study for your specific soil, not an assumed value.

Lime needed

14,100 lb

Medium confidence

The correct lime percentage for your soil must be determined by a geotechnical lab mix-design study (e.g. per ASTM D6276) — this calculator only converts a known target percentage into a material quantity, it does not determine the required percentage itself.

Then change the inputs to see how far the answer moves.

Show calculation logic

How this was calculated

Formula source(s)

  • Lime mass = soil volume × soil dry density × target lime content percentage (by dry weight), the standard method for proportioning lime in lime-soil stabilization

Inputs used

Soil Volume to Stabilize
130.75 yd³
Soil Dry Density
99.88 pcf
Target Lime Content (% by Dry Weight)
4
Final result14,104.72 lb

Confidence note: The correct lime percentage for your soil must be determined by a geotechnical lab mix-design study (e.g. per ASTM D6276) — this calculator only converts a known target percentage into a material quantity, it does not determine the required percentage itself.

What this calculation does not cover

  • The dosage percentage belongs to a specific product, and the two products are not interchangeable by mass. Quicklime is roughly a third more effective per unit weight than hydrated lime — about 0.76 kg (1.7 lb) of quicklime does the work of 1 kg (2.2 lb) of hydrate — so a mix design written for one and ordered as the other lands about 25% out in one direction or the other. Quicklime also needs its own water added on site and burns skin and eyes wherever it meets sweat.
  • Delivered lime is not pure lime. Commercial product is sold on an available-lime content in the low-to-mid nineties, and anything that has sat open in a stockpile or an unsealed silo has carbonated back toward limestone, which does nothing at all for the soil. The mix design is written on active lime, so ordering the nominal mass under-doses the job by exactly the shortfall.
  • Says nothing about whether this soil should be limed in the first place. Soils carrying soluble sulfate react with lime and water to grow ettringite, which swells and heaves a finished pavement months after handover, and the screen for it is a separate soluble-sulfate determination run on the same samples as the mix design. A dosage figure is a quantity, not a clearance to proceed.

Estimated cost — your price

This site holds no price list for this material — local prices vary too much to publish honestly. Enter your supplier's price and the result is costed with it.

Computed in your browser — nothing you enter is uploaded. Presented in US customary units and US trade terminology. Where a formula follows a published standard, that standard and its edition are cited beside it on this page; where none governs, the page says so. Local amendments override model codes — verify against the code in force where you build.

Sources checked 2026-09-06 · in the site-wide review of 2026-09-06 · v1.1.1

Regulatory standards & verification citations1
  1. Lime mass = soil volume × soil dry density × target lime content percentage (by dry weight), the standard method for proportioning lime in lime-soil stabilization
Cite this page

Your workspace

Most jobs need more than one number. Add the calculators you need next and they open right here, underneath this one — your figures stay on screen and nothing is lost to a page change.

Now that you have the number

These guides cover the work this quantity is for — the first ones run this calculator inside the section that raises the question.

  • A site balances on the drawing long before it balances in the dirt: shrinkage and a formation wet of optimum each take their share of the cut first.

Called something else where you work? Lime binders — the term in each market, how close the equivalence really is, and the standard that governs it.

How to calculate soil stabilization lime content in 4 steps

  1. Soil Volume to StabilizeThe total volume of soil to be treated with lime.
  2. Soil Dry DensityThe dry density of the soil being stabilized.
  3. Target Lime Content (% by Dry Weight)The target lime dosage as a percentage of the soil's dry weight.
  4. Lime neededThe tool computes the lime needed from those figures and shows the formula, its sources, and a confidence rating alongside it.

Lime needed by soil volume to stabilize

Page defaults, not your figures above.

Soil Volume to StabilizeLime needed (lb)
100 yd³10,788
150 yd³16,181
200 yd³21,575
250 yd³26,969

Frequently asked questions

Why is lime content expressed as a percentage of soil dry weight?
Because lime-soil stabilization design is based on the ratio of lime to the dry mass of soil being treated. So this calculator converts your soil volume to a mass (via dry density) before applying the target percentage, which keeps the lime dosage correct regardless of the volume measured on-site.
How do I determine the right lime percentage for my soil?
The correct target lime content must be determined by a geotechnical lab mix-design study on your specific soil (e.g. per ASTM D6276). This calculator only converts a known target percentage into a material quantity — it does not determine the required percentage itself.
Why does soil dry density matter to the result?
Soil dry density is a measured property of the specific soil being stabilized, not a fixed constant. A denser soil has more mass per unit volume, so it requires proportionally more lime mass to reach the same target percentage by dry weight.
Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — a confirmed fix gets a permanent check of its own, so the same mistake cannot come back.