Family Law Calculators United States

About our Family Law calculators for United States

LexScale.ai offers 35 free family law calculators for United States — part of the largest free legal-calculator library in North America, with 400+ tools across 23 practice areas, every one available in Canadian and US versions. Each family law calculator gives an instant, private estimate using current United States statutory rates and standard legal formulas, with no signup and nothing sent to a server.

What you can calculate

Child Support Calculator US Income Shares Model · Alimony Calculator — · Child Custody Time Calculator · Retroactive Child Support Calculator · Divorce Asset Division Calculator · Divorce Legal Fees Calculator · Child Expense Split Calculator · Parenting Time Percentage Calculator · Pension Division Calculator · Marital Home Equity Calculator · Separation Date Deadline Calculator · Common-Law Property Split Calculator · Prenuptial Agreement Cost Calculator · Child Support Modification Calculator · Child Tax Exemption Calculator · Legal Name Change Cost Calculator · Separation Agreement Cost Calculator · Child Support Add-On Expenses Calculator · Shared Custody Support Offset Calculator · Child Support Arrears Calculator · Imputed Income Calculator for Support · Marital Debt Division Calculator · Naturalization Timeline Calculator · DACA Renewal Cost Calculator · Green Card Priority Date Estimator Calculator · Equalization / Property Division Calculator · House Buyout Calculator Divorce · Alimony Duration Calculator · Alimony Buyout Calculator · Prenup Protected Assets Calculator · Child Relocation Factors Score Calculator · College Support Calculator Divorce · Divorce Cost Estimator Calculator · High-Income Child Support Calculator · Child Support Multiple Families Calculator

How accurate are they?

Our family law calculators use up-to-date statutory rates, provincial and state data, and the same formulas lawyers and courts rely on. They are designed for planning and research — actual outcomes depend on your specific facts, jurisdiction, and judicial or agency discretion. Rates are reviewed and updated as laws change. For decisions that matter, confirm the numbers with a licensed lawyer.

Canada and United States coverage

Legal rules differ sharply between the two countries, so every family law calculator is built in a Canadian version (using provincial rules) and a US version (using state-level rules). You are viewing the United States edition; switch countries any time from the calculator hub.

Free to embed

Law firms and legal sites can embed any of these family law calculators free — each has a one-click embed that drops an interactive widget onto your own site, with a "Powered by LexScale.ai" link and no API key required.

Family Law Calculators — FAQ

Are these family law calculators free?

Yes. Every family law calculator on LexScale.ai is 100% free, needs no signup, and runs entirely in your browser — nothing you enter is sent to a server. You can use them as many times as you like.

Do these calculators work for United States?

Yes — this page is the United States edition. Each family law calculator uses United States-specific rules, and most are also available in the other country's version. Results reflect current statutory rates and standard legal formulas for United States.

How accurate are the family law calculators?

They use current United States statutory rates, provincial/state data, and standard legal formulas to give reliable planning estimates. Exact outcomes depend on your facts, jurisdiction, and the discretion of courts or agencies, so confirm important numbers with a qualified lawyer.

Can I embed these family law calculators on my law firm website?

Yes. Every calculator has a free embed option — click 'Embed this calculator' on any calculator page to copy an iframe snippet. It includes a 'Powered by LexScale.ai' attribution link, and no API key or account is required.

Which family law calculator should I use?

Start with the one that matches your question. This section includes Child Support Calculator US Income Shares Model, Alimony Calculator —, Child Custody Time Calculator, Retroactive Child Support Calculator and more. Each calculator explains what it estimates and links to related tools so you can move between them.

Are these calculators legal advice?

No. They are free educational estimating tools, not legal advice, and do not create a lawyer-client relationship. For advice on your specific situation, consult a licensed lawyer in your jurisdiction.

Family Law Calculators — United States