Free Custody & Child Support Calculator
Calculate child support, alimony, and see how different custody schedules affect your payments. State-specific formulas for all 50 states.
Custody Schedule
Parenting Time Split
73 overnights/year = 20% parenting time
Monthly Income After Support
Where Your Support Goes
Calculator Categories
Child Support
State-specific child support calculators for all 50 US states plus tools for arrears, modifications, and self-employment scenarios.
104 calculatorsAlimony & Spousal Support
Calculate alimony and spousal support payments, duration, and tax implications based on your state's laws.
53 calculatorsCustody & Parenting Time
Tools for calculating custody percentages, planning schedules, and understanding different parenting time arrangements.
65 calculatorsDivorce & Property Division
Calculate property division, home buyouts, retirement splits, and total divorce costs.
63 calculatorsFamily Finance
Financial planning tools for life after divorce: budgeting, tax benefits, income conversion, and childcare costs.
49 calculatorsLegal & Planning
Estimate legal costs, plan your case timeline, and build parenting plans for your family law matter.
54 calculatorsPopular Calculators
Child Support Calculator
Detailed state-specific child support calculations with full breakdown.
Alimony Calculator
Calculate spousal support based on income and marriage length.
Parenting Time Calculator
Determine custody percentages by overnights or hours.
Divorce Settlement Calculator
Estimate overall financial outcome of your divorce.
Property Division Calculator
Calculate equitable or community property division.
50/50 Custody Schedule
Explore common equal custody arrangements.
Divorce Cost Estimator
Estimate total costs including attorneys and court fees.
Child Support by State
State-specific calculators using official formulas.
How It Works
Select Calculator
Choose from 120+ calculators across six categories covering child support, alimony, custody, divorce, family finance, and legal planning.
Enter Your Details
Input your income, custody arrangement, state, and other relevant information. All data stays in your browser -- nothing is sent to our servers.
Get Instant Results
Receive detailed estimates instantly. Compare scenarios, view breakdowns, and share results via a unique URL.
Why The Custody Calculator?
Every calculator uses your state's specific guidelines, formulas, and rules -- not generic national estimates.
We implement the same income shares, percentage of income, and Melson formula models used by family courts.
Use every calculator without creating an account. We do not track you, set cookies, or collect personal data.
Get results in milliseconds. Save and share your calculations through a unique URL with all inputs preserved.
Every calculator includes detailed explanations, FAQs, and links to relevant legal guides so you understand the numbers.
Fully responsive design works on any device -- phone, tablet, or desktop. Calculate on the go, in meetings, or at home.
Browse Child Support Calculators by State
Popular Articles
Average Child Support by State
See typical payments in your state and calculate your personalized estimate.
Average Cost of Divorce by State
State-by-state breakdown of divorce costs with a personal estimator.
How to Calculate Child Support
Step-by-step walkthrough of the 3 models used across all 50 states.
Does Custody Affect Support?
See how 6 different custody splits change your child support payment.
What Judges Look at for Custody
Rate your situation on the 12 factors judges actually weigh.
View All Articles →
Guides with embedded calculators covering child support, custody, alimony, and divorce.
Family Law Guides & Resources
Complete Guide to Child Support
How child support is calculated, modified, and enforced across all 50 states.
Complete Guide to Alimony
Types, factors, duration, and tax implications of spousal support.
Complete Guide to Custody
Types of custody, schedules, and factors courts consider.
Complete Guide to Divorce
Process, costs, property division, and planning tips.
Guide to Property Division
Community property vs. equitable distribution explained.
Guide to Co-Parenting
Communication, schedules, and conflict resolution after divorce.