California Family and Legal Calculators

Support, probate and small claims all follow formulas set in California statutes and court guidelines. These calculators show how those formulas apply to your numbers, so you know what to expect before you talk to the court, a lawyer or the other party.

All 6 Family & Legal tools

People going through a divorce or separation, executors and anyone with a small dispute. Every tool shows how its result was worked out and links to the official source.

Child Support CalculatorEstimate California guideline child support with the Family Code 4055 formula: both parents' net income, custody time share and number of children.→ Spousal Support CalculatorEstimate temporary spousal support (alimony) in California with the common 40/50 guideline, plus how long support may last based on marriage length.→ Probate Fee CalculatorCalculate California statutory probate fees for the executor and attorney under Probate Code 10800 and 10810, with the tier-by-tier breakdown.→ Community Property Division CalculatorSplit community property in a California divorce: list assets and debts, mark separate property, add 2640 reimbursements and see the equalization payment.→ Small Claims Court Checker→ Statute of Limitations LookupLook up the California statute of limitations for injury, contract, debt, fraud, malpractice, government claims and more, and calculate your filing deadline.→

Family & Legal guides

All guides →

California Community Property Rules

What is community vs separate property, the 50/50 split, 2640 reimbursements, debts, the house and retirement accounts.

Oct 2, 2026 · 7 min read

California Lemon Law Guide

The 18-month presumption tests, what a buyback pays after the mileage offset, and the 2025 opt-in notice rules.

Oct 2, 2026 · 6 min read

California Small Claims Court: A Step-by-Step Guide

The $12,500 limit ($6,250 for businesses), $30-$75 filing fees, serving papers, the hearing, appeals and collecting.

Oct 2, 2026 · 7 min read

How Child Support Is Calculated in California

Every California court uses the same formula. Here is how net income, custody time and the K factor turn into a monthly number.

Sep 27, 2026 · 3 min read

How Alimony Is Calculated in California: Temporary vs. Long-Term

Temporary support has a formula; long-term support does not. Here is how California courts handle each, and how long alimony lasts.