Free Tools for Dads — Calculators, Generators & Trackers.
Estimate your child support, model custody schedules, draft pro-se motions, calculate arrears, and split shared expenses — using the exact formulas your state's family court applies. No login. No data leaves your browser. No upsell to start.
Start here: which state are you in?
Each state calculates support differently. We'll route you to the right formula automatically.
💡 Tip: Pick from the dropdown above. We'll route you to your state's exact formula on the next screen.
What are you trying to figure out?
Everything you need before court or negotiation.
Most Dads start with one. The hardest cases use all three together.
Your state's model determines almost everything.
The same income produces wildly different support amounts depending on which formula your state uses. Here's how the most common ones break down.
| State | Formula Model | PT Credit Threshold | Calculator |
|---|---|---|---|
| Texas | Percentage | Net income % | Open Texas → |
| California | Income Shares | DissoMaster | Open California → |
| Florida | Income Shares | Combined | Open Florida → |
| New York | Income Shares | CSSA % | Open New York → |
| Pennsylvania | Income Shares | Standard | Open Pennsylvania → |
| Illinois | Income Shares | Standard | Open Illinois → |
Tracking, simulation, and court-ready exports.
Built for the dad who wants the numbers on paper before the hearing.
What-If Simulator
Drag sliders, watch your number change live
🤖AI What-If Chat
Type your situation in plain English
📈Benchmark Comparator
Are you overpaying vs. other Dads?
📄Court Worksheet
Printable PDF with income & PT breakdown
📸Receipt Scanner
Snap a receipt → auto-split → send request
🗓️Custody Calendar
Color-coded schedule for the full year
🔄Night Credits Tracker
Log trades & prove your actual overnights
📑Custody Workbook
5-tab tracker with court-ready export
Dads who used the calculator before court.
"Plugged in my numbers, saw I was overpaying $312/mo. Filed within the week."
"The parenting-time tool showed me exactly which schedule cut my support most."
"Used the worksheet PDF in court. Judge said it was the cleanest pro-se filing he'd seen."
From state to estimate in under 2 minutes.
- 1
Pick your state
We auto-load your state's formula type, multipliers, and parenting-time threshold.
- 2
Enter both incomes
Gross monthly income before taxes for both you and your co-parent.
- 3
Adjust for custody time
More parenting time typically reduces your support obligation.
- 4
Add expenses
Health insurance, childcare, and extraordinary costs are split proportionally.
- 5
Get your court-ready estimate
Monthly and annual amounts with low-to-high range and detailed breakdown.
Pro-se motions, arrears planning, and income defense.
Same private-in-browser standard as the calculators.
Motion to Modify Child Support
Fill in your facts. Get a complete, print-ready motion document. Not legal advice — review with an attorney before filing.
These tools are for informational purposes only and do not constitute legal advice.
Questions Dads ask before they file.
Most states use one of three models: Income Shares (combines both parents' incomes), Percentage of Income (applies a rate to the non-custodial parent's income), or the Melson Formula (a multi-step approach with self-support reserves). This calculator applies your state's specific model.
Yes. In most states, the more overnights you have with your children, the lower your child support obligation. Many states apply a parenting time credit when your custody time exceeds a threshold — typically 20–35% of overnights.
This tool uses your state's guideline model and factors to provide an educational estimate. It covers all 50 states plus D.C. However, only a court or child support agency can set an official order. Consult a licensed family law attorney for advice specific to your case.
Yes. Every calculator runs entirely in your browser — nothing is uploaded, saved on a server, or tied to your identity. Refresh the page and the data is gone.
Yes. The Court Worksheet generates a printable PDF with your income, parenting time, and obligation breakdown — formatted for filing or attorney review.
That number keeping you up at night?
2,000+ Dads have used our step-by-step Reduction Guide to file a modification — most without hiring a lawyer. The exact scripts, templates, and 30-day action plan that have saved Fathers an average of $312/month.
Get the Reduction Guide — Just $4760-day money-back guarantee · One-time payment · Instant access