A precision instrument for legal math
Legal figures, computed in the open.
Five estimators for child support, injury settlements, alimony, attorney fees, and filing deadlines. Each one plots the answer, shows every digit of the arithmetic, and names the statute underneath — the opposite of a calculator that hides the math and takes your phone number.
Child support calculator
Texas is computed from the statute. Other states use a general income-shares model and are stamped approximate.
Method & source
Show the work Step-by-step calculation
Personal injury settlement calculator
No official formula for case value exists. This applies the published damages-multiplier method and returns a range.
Midpoint $0 · Estimated take-home after fees $0
Method & source
Economic damages are totalled, then a severity multiplier is applied to the injury-related portion to approximate pain and suffering. The range comes from moving that multiplier one step each way. Fault reduces the total; the attorney fee is taken last.
The special-damages multiplier framework, as published by consumer legal references such as Nolo and AllLaw. No court or insurer is bound by it.
Show the work Step-by-step calculation
Alimony calculator
Spousal support has no formula in most states. Alimony is among the most discretionary areas of family law.
Method & source
Guideline-style approaches typically award between 25% and 40% of the gap between the two incomes. The range spans that spread; duration is estimated from the length of the marriage.
Common state guideline approaches. Most states have no statutory formula and leave alimony to judicial discretion entirely.
Show the work Step-by-step calculation
Attorney fee calculator
Arithmetic on the fee terms you enter. Exact if your numbers are exact.
Method & source
Contingency applies your percentage to the recovery; hourly multiplies rate by hours; flat fee sums the quoted fee and costs.
Whether expenses are deducted before or after the fee materially changes your net. That term is negotiable — confirm it against your signed engagement letter.
Show the work Step-by-step calculation
Statute of limitations calculator
Missing a deadline permanently ends a claim. Treat this as a prompt to call a lawyer today, never as authority.
Method & source
The state's limitation period is added to the date you entered. Real deadlines shift with discovery rules, tolling for minors, and government-claim notice periods that can expire within months.
Show our work The math, and the laws behind it
Sources Personal-injury limitation periods, cited by statute
Each personal-injury period below was verified against the cited statute on July 11, 2026, from the current official state code, cross-checked against independent 50-state surveys. Two states changed their period recently and the calculator splits on the effective date: Florida (four years → two, March 24, 2023) and Louisiana (one year → two, July 1, 2024). This table is generated from the same data the calculator uses, so the two cannot disagree. Other claim types in the tool are not yet individually cited.
| State | Years | Statute |
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Why this exists
The category norm is a form that takes your phone number and gives you nothing.
Search "settlement calculator" and most results are lead-capture pages run by marketing firms. You enter your losses; they enter your details into a call queue. The arithmetic is hidden because, frequently, there isn't any.
Every number opens
Each result expands into its inputs, the formula applied, and the statute or published method behind it. Nothing is asserted without showing where it came from.
We stamp our own precision
Where a figure follows a statute exactly, the result says Exact. Where it is an approximation, it says Approximate — and names what we have not yet verified.
Nothing leaves your browser
No account, no phone number, no lead sold to a firm. Every calculation runs on your device. We could not sell your inputs if we wanted to; we never receive them.
Certainty, stamped
Not every number deserves the same confidence.
Three of these tools compute a figure straight from a statute or from arithmetic you supply — those are exact. Two estimate something the law leaves open, so they return a range. Here is where each one sits.
Methodology
What each tool does, and where the numbers come from.
Five instruments, five different standards of certainty. We publish each one so you can judge the number, not just read it.
Legal data last verified July 2026. When a law that drives one of these calculators changes, we update the tool and note it here. Found an error? Email contact@casevaluecalc.com with a citation and we will correct it.
Child support
A percentage of the paying parent's monthly net resources: 20% for one child, rising to 40% for five or more, applied only up to a statutory cap. Read child support guidelines by state or how much child support typically runs. Tex. Fam. Code § 154.125; cap raised to $11,700 effective September 1, 2025.
Personal injury
Economic damages plus a severity multiplier applied to the injury-related portion, reduced by comparative fault, then by the attorney fee. Returned as a range — see how injury settlements are valued. The special-damages multiplier framework published by Nolo, AllLaw and similar references. Not binding on any court or insurer.
Alimony
A spread of 25%–40% of the income gap, over a duration tied to the length of the marriage. Common guideline approaches. Most states impose no formula at all.
Filing deadlines
The state's limitation period added to the incident date, with date-aware handling where the law has changed: Louisiana splits on July 1, 2024, and Florida on March 24, 2023 — both changes prospective only. Browse deadlines by state, California, or Florida. Every personal-injury cell is individually cited to its statute and was verified July 11, 2026. Other claim types are not yet individually cited — verify before relying on them.
FAQ
Common questions
Straight answers about accuracy, privacy, and why some results are a range instead of a single figure.
How accurate are these calculators?
It depends on the tool and the state, and we stamp it on every result. Texas child support follows the statutory formula and is exact if your net resources figure is right. Other states are stamped approximate, because they use detailed guideline schedules we have not yet verified line by line. Injury and alimony outputs are ranges, never single predictions.
Do you sell my information or require sign-up?
No. We never ask for your phone number, never require an account, and do not sell personal information. Every calculation runs in your browser — nothing you type is transmitted to us.
How does Texas calculate child support?
Texas applies a percentage of the paying parent's monthly net resources: 20% for one child, 25% for two, 30% for three, 35% for four, and 40% for five or more. Those percentages apply only up to a statutory cap on net resources, which increased to $11,700 per month effective September 1, 2025. Net resources means gross income less federal income tax at the single rate, Social Security and Medicare, union dues, and the child's health and dental premiums. See child support by state for more.
What is Louisiana's deadline for a personal injury lawsuit?
It depends on when you were injured. Louisiana replaced its one-year prescriptive period with two years under Civil Code article 3493.11, effective July 1, 2024. The change applies prospectively only, so an injury sustained before that date generally still carries the one-year deadline. The filing deadline tool applies the correct rule based on the date you enter.
Why show a range instead of one number?
Because for settlements and alimony, a single number would be a lie. There is no authoritative formula for what a case is worth. A range with the method attached is the honest form of the same information.